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@grumpyhermit8657

Жыл бұрын

yanchal stored ice. it doesnt make it. the ice is transported from places where it drops below freezing at night

@lii1Il

Жыл бұрын

I've been following SHIELD and it is the way to go.

@albertkustra

Жыл бұрын

I would love to see if they could try to find a way to grow these similar to mycelium blocks

@zodsinclair8500

Жыл бұрын

Hope its not too extremely flammable, like the the exterior reliefs of the formerly inhabited Grendfell Tower that burned down. Other than that it sounds very friendly to the environment.

@thesilentone4024

Жыл бұрын

Can you talk about china's new red hydrogen brake through? Also thoughts on cities using thirsty cement to reduce flooding.

As much as this sounds very promising, "Accessibility is everything" -- it won't become "the next norm" if nobody can buy it.

@grimaffiliations3671

Жыл бұрын

that's kinda what he said

@myRefuge3710

Жыл бұрын

Its for the rich

@alexlabs4858

Жыл бұрын

But if you’re NileRed you can make aerogel 😉

@michaelcannon1168

Жыл бұрын

Maybe one day we’ll discover a cheaper material with similar properties. The tech is still pretty cool

@Quickened1

Жыл бұрын

Everything produced is always expensive when it's first introduced, after a few years, the price comes down, and everybody owns it....

9°C reduction in direct sunlight is impressive, but I think not impressive enough compared to other radiative coatings that require less effort to produce. Hard to imagine aerogel will ever be inexpensive in large continuous sheets. Other radiative coatings benefit from a plastic film over top of them, which insulates via air gap and also allows for easy cleaning and cheap replacement of the sky exposed surface. I didn't hear mention of a replaceable film over top of this coating and how that effects performance. I'll have to read the paper. Edit: Apparently I was not paying attention to the video and totally missed the point. I didn't notice they're achieving their low temps by combining radiative cooling with evaporative cooling. That's less impressive and more finicky. Having a water permeable surface facing the sky is just asking for dust contamination to ruin reflectivity, and you need deionized water or you'll get mineral buildup. It takes energy to distill that water which is a continuous carbon emission required for operation. Good on them for experimenting but I have little hope in this.

@Br0ken_Rob0ts

Жыл бұрын

What if it was used to add shade to the house by like a weird exoskeleton

@justinw1765

Жыл бұрын

Agree on all points. I did like the transparent aerogel in windows somewhat. But vacuum insulation is even more efficient than aerogel and doesn't require extra, super specialized materials. It does require some definite engineering and correct material use, but is significantly cheaper than making transparent aerogel.

@Mr2Reviews

Жыл бұрын

I agree with all points as well but one thing I think Matt failed to recognize is the potential to produce these materials in high volumes in space via Starship delivered space factories. There's certainly good use cases for a super lightweight insulation material especially for future space, moon, and mars infrastructure.

@Patrik6920

Жыл бұрын

@@justinw1765 or why not just use tripple layer gass filled one...no need to hassle with vacume windows ...can be made considerbly lighter...

@Patrik6920

Жыл бұрын

@@Mr2Reviews idd...ur probably right those materials would be cheaper produce and easier on the moon or in space...just one small problem we need to send material and equippment up...and defy earhs gravity isent exactly cheap... using rockets its a cost of around atleast 20 000 USD to send 1kg of material on a standard Atlas V rocket... ..not exacly cost effective nor enviromental friendly, and not to mention the use of energy and material to produced to make the none reusable part of the rocket would outweght the saving by faar...

I built a passive solar cooling system for my shop (which is a steel construction). The system is very simple. I placed a second steel "fly" roof above the original roof which acts like an awning, shading the whole building and carrying away excess heat. It makes a huge difference to my cooling costs out here in the Nevada desert. If more buildings were built like this I believe it would make a significant difference to energy usage.

@MrArjanOskam

Жыл бұрын

I also believe that having lots of black asphalt roads and black flat roofs, traps and collects heat, increasing the temperature. Adding more greens like trees and such in cities and villages could reduce this effect. It's basically the same principle as you are using, instead using greens. Like adding green rooftops with bushes and plants can decrease heat passing through by a lot, while also adding more greenery for both bees, birds, wildlife and improving air quality when done in larger scale. Little bit like the Babylon gardens. Correct me if all I am saying is BS, I am no expert. But it would look awesome none the less. Cities covered in green plants and flowers. Just like how they're now cooling rivers and streams in Ireland and Schotland by planting trees arround the water.

@Bareego

Жыл бұрын

If this "fly" roof is then slanted to cut down the sunlight in the hot months but lets the sunlight through in winter you can also allow sun heating when you want it. If you pick the right angle you could then slap solar panels on there with high efficiency.

@donbraga4863

Жыл бұрын

@@MrArjanOskam greens need water, which in nevada is a bit of a shortage I believe, at least for this type of usage.

@MrArjanOskam

Жыл бұрын

@@donbraga4863 I did mean more normal cities and Villages where there is water. I can imagine that there are cities located in dessert like environments that it's pretty much impossible.

@grizzlygrizzle

Жыл бұрын

I would guess that there's some serious convective ventilation going on between those roofs. And if any of the roofing surfaces, inside or out, are relatively shiny, there's a radiant barrier at work, too. (Radiant barriers need an air space of about 3/4" minimum to function well, something ignored when foil faced insulation is installed with wallboard right on top of it.) --Forty years ago, (almost to the day) I built a somewhat experimental addition for a friend that had a vented roof with a cavity underneath, bounded by foil below. -- It was a cathedral ceiling with 2x8 rafters, with a poly vapor barrier on the underside, with foil faced fiberglass insulation, installed with the foil up, and the flanges stapled to the top edges of the rafters. Then the foil was perforated with a lot of short knife cuts (so not to act as a vapor barrier). Furring strips were installed on the top edges of the rafters, running eave-to-peak, and the plywood sheathing installed on top of that (with longer nails, to get through the furring into the rafters). The asphalt roof shingles were installed with 1-1/4" roofing nails, so that they would protrude through the back of the sheathing about 3/4", to just "kiss" the top face of the foil, in order to help maintain the 3/4" continuous vent cavity, because the insulation had a slight tendency to puff up. With vented soffits and ridge, the end product had continuous, 3/4x14-1/2" vent cavities running up the roof, surrounded by foil on the bottom, furring on the sides, and sheathing on the top. -- The foil provided a radiant barrier to heat gain/loss, and combined with the convective ventilation, the whole thing worked better than I had hoped. The place was noticeably cooler in the summer, and warmer in the winter. -- The biggest downside was installing the sheathing and the insulation at the same time, unrolling multiple rolls of insulation, stapling it four feet up, then wedging the rest of the roll between the rafters so it wouldn't roll away, and then installing a row of plywood. Wash, rinse, repeat. Some juggling was required.

Everyone with a basement can significantly cool their house using the geothermal quality of the cool earth. All you have to do is keep the widows and/or bulkhead to your basement open. Open a path for the air in your basement to come up (the cellar door). Keep the windows in the house closed and shades drawn in the day time and place a fan in one window blowing out in each room you wish to cool. Old school geothermal. In houses with forced hot air, if the furnace is in the basement, you can turn the blower on with no heat and bring up the cooler air that way.

@slydog81

Жыл бұрын

This makes very little difference, practically speaking.

@walter6574

Жыл бұрын

What happens when the basement gets to the ambiant outside temperature? How does the cooler air drom the basement get to the levels above the basement? Why not just turn the fan on in the furnace and keep all windos closed so that out side warm air does not come into th house?

@hughmanatee7433

Жыл бұрын

@@walter6574 The temperature of the earth four feet below the surface is constant, about 50 degrees.

@hughmanatee7433

Жыл бұрын

Warm air in the home needs to be evacuated so the cool air can rise under the pressure made by the fans. Remember that cool air sinks. In order to get it upstairs it must be pumped up and that the volume of the air in a house is constant so you must get rid of the hot air in order for the cool air to rise. It is the same concept as the cupola,hot air rise out and the cooler air rises up to refill the air volume of the house.

@walter6574

Жыл бұрын

@@hughmanatee7433 how does the warm air upstairs get evacualted when the downstairs windows are open?

I especially like the glazing concept, as the current gold standard relies on filling the space between glazing with argon. Eventually those seals fail and the windows no longer perform at their original level; aerogels will stay where they are. The window might even be a bit stronger depending on how the glazing and aerogel are married to each other. If they are bonded with transparent adhesive, you could reasonably expect the entire window thickness to behave as a single, thick piece which would be more rigid and possibly more resistant to sound transmission.

@jacohollebrandse305

Жыл бұрын

I'm a bit hesitant though about the translucent properties of aerogel. It might be great at the moment, but I wouldn't consider windows filled with aerogel or another solid material before I know for sure the aerogel will stay translucent for at least a decade under the influence of heat, cold and sunlight.

@tevawiese6248

Жыл бұрын

Aerogels are usually pretty brittle and not very strong, so I wouldn't rely on it for making the glass stronger, and it's probably not soft enough to act as much of a sound absorber compared to an air gap, but I do like the idea of having an insulating layer that is more efficient than argon and actually stays where you put it.

@ashleymartens4153

Жыл бұрын

I would be very interested in retrofit glazing to improve window performance.

@blg53

Жыл бұрын

Except a thicker material is not necessarily stronger than a thinner one, especially if it is subjected to thermal expansion/contraction. For instance, if you make windows from thick glass that glass has to be borosilicate one (eg Pyrex) or it will crack under temperature changes. So it is either unreliable or VERY expensive.

@djamilawilschke7259

Жыл бұрын

retrofitting the glass has limited effects with the type of windows used all over the US, if you look at european windows from germany or Switzerland, which are the benchmark in the industry for insulation, you’ll see that it’s the double to triple layers of glass + the frames insulated with silicon not allowing for any airflow. the sliding window style does not allow for such airtight insulation

3 Questions: 1 - Has there been any work on what happens to solids dissolved in the water after evaporation? Will the panels be cleaned or will you need distilled water or will the panels be replaced? 2 - Has there been any work on the cost of the water that is required from both a price and energy standpoint? 3 - Is freezing the water in panels a problem?

@jhoughjr1

Жыл бұрын

3 would have to be a problem. Ice can expand steel when freezing, aerogel would have no chance.

@yatesmachine1234

Жыл бұрын

1 and 2 are very good questions. In the desert southwest, evaporative coolers (aka swamp coolers) have issues when sourced with water containing mineral deposits. If the water source for this device requires "pure" water, then significant filtration costs need to be factored in.

@rawwrrob9395

Жыл бұрын

@@yatesmachine1234 My state in the SW US has extremely hard water. I remember needing to regularly knock calcium stalactites off spigots throughout the year at my old house. Swamp cooler substrate would clog with minerals and dust within months and needed constant replacement. Our pool would need to be regularly drained every 6 months or so because the minerals would concentrate so much in the water that they'd start to precipitate out of solution and clog our filters. Even after getting a whole-house water softener system, we still had issues.

@alexanderlau770

Жыл бұрын

I actually think, that reducing the pH-value of the water would have a significant positive effect if crystallisation is a problem. Of course, distilled, pure water would be the best solution to increase the lifetime of such systems but it's very costly. Having a reduced pH-value by adding some weak acids (acetic acid etc.) would e.g. dissolve crystallized calcium and like that, the aerogel-structure would be cleaned, regularly. The only additional point that has to be considered is to find a point at which the aerogel structure itself is not damaged. If that's not the case, just clean it. However, I think that the setup has to be put horizontal anyway. Since the water is in the lower part, the aerogel structure shouldn't be damaged at all if dissolved salts are getting crystallized. I would adjust the design so that the part with the water container acts like a drawer. Like that, just pure evaporated water gets in contact with the aerogel.

@alexanderlau770

Жыл бұрын

To point 3: I actually don't think, that "normal" freezing water should be a problem. If you would use a drawer-like system, water and aerogel would be separated, anyway. Shock-freezing might cause issues if gaseous water resublimates within the aerogel structure. If the freezing process is slow (transition from gaseous to liquid first), the water should condensate into the liquid state and goes into the first container.

I painted my roof with very white thermal reflective paint. You have to wear dark sunglasses it is so bright. My loft office went from too hot, even with the air conditioner on full blast to not having to use an air conditioner at all. Roofs should be the purest white they can possibly be.

@simpolang

10 ай бұрын

This can blind aircraft pilots if every house and buildings have it.

@zacharysherry2910

9 ай бұрын

As an electrician that works on roofs consistently I can attest to the fact that I've temporarily gone fairly blind looking at the white TPO material (that thin white rubbery stuff) that covers commercial roofs like apartment buildings. Learned my lesson.

@shawncrocker7037

9 ай бұрын

​@@simpolangthen we need to get aircraft pilots better sun glasses! Overcoming air craft pilot visibility can't be the stopping point for people avoiding their buildings from absorbing radiated heat from the sun!

@concert_rat1004

9 ай бұрын

Seems like the reflective coating would make the place colder than normal in the winter.

@luckuijken5451

7 ай бұрын

@@concert_rat1004 yes, but less than you would think. Due to the sun being at a lower angle in winter, the fraction of solar rays hitting the roof is less than in the summer, and more solar rays hit the side of a building. This can be used to optimize solar heating in winters by placing many windows on the south side of the building, and letting the sun shine inside the house. In the summer, most of the solar rays will be reflected away and the building is kept cool, even with the windows.

It's always awesome when two different University groups create two highly-similar products independently and then get basically the same results. They've ended up supporting each other's technology and scientific findings, which will hopefully attract investors. If we can even use this type of technology to support AC, it would be incredible - same with radiative cooling, but this is more effective and can be applied outside optimum locations. On a side topic, the passive cooling architecture built by ancient people carry advantages we can use in our buildings now. In fact, the same is true with incredible engineering masters of water management, like the Roman and Islamic empires. We're so used to resorting to shortcuts, electricity and easy-to-use materials (like plastic) that we forget you can do a lot of the same things without them (or at least adapt ancient methods to reduce unsustainable impact). I mean, some things are clearly just human laziness, despite easy alternatives existing - like using plastic bags.

Yes I live in Malaysia. Our home is passively cooled by a bamboo grove and wind over the river (plus ceiling fans). Aerogel panels would make our bedroom cooler at night. I wonder if the heat drawn off the top of the panel could be captured to heat water for a warm bath.🤔

@gl15col

Жыл бұрын

This is the kind of thing they need to consider along with it's other uses. The more things one material can do, the less materials will be required to build a home, also a big win.

@Quickened1

Жыл бұрын

It's already very easy to heat water with the sun. You just need a black hose coiled in a progressive loop, situated within a black box under maximum sunlight...

@richardtheweaver4891

Жыл бұрын

Nothing in the system gets above room temperature, so no heat can be extracted. The system is a combination of an evaporative cooler (like your skin when you sweat) and a radiative heat exchanger that ‘links’ the unit to outer space. And just like it is impossible to heat water above body temperature with your sweat, this system is limited to room temperature and below. Unless it runs out of water, I suppose. 😊

@edthoreum7625

Жыл бұрын

In my town when it gets too hot people visit swimming pool,beach, or congregate in the library this saves $ for all,,,

@peteranon8455

Жыл бұрын

@@Quickened1 If you have the startup cost, vacuum sealed copper tubes will heat the water to near boiling. Naturally, the setup that harnesses the sunlight will block out the sunlight from anything behind it, so they do have some secondary cooling properties.

White roofing for any building within 40 degrees latitude helps a lot too. We're in Tennessee USA and I got a white roof on my old house - energy bill DROPPED. Got married and moved to his house, we painted that metal roof very light gray. Again, energy bill dropped and we're much more comfortable.

Great video and thanks for all the time you put into your videos. They are always exceptional and professional. I am a retired EE myself. Yes I would be willing to upgrade my A/C and windows but obviously will depend on the cost. Again, thank you.

Regarding use on the side of buildings in climates where freezing happens, this usage is in constructing a cooling device which is tricky as the comments show. Matt did another video on aerogel as an insulator. I too would like to get my hands on a sheet of it, or would like to make it from ingredients! Aerogel insulates about 2.5 x better than fiberglass, so insulating sheets would be useful for insulating walls and ceilings. It is fragile, subject to cracking and breaking. We have a long way to go on using it practically, but the core idea is powerful. Passive cooling design of buildings and homes is also a key. With good design to minimize heat transfer, a lot of cooling can be done by letting out the heat of the day and letting in the cool of the night. I do this in my apartment. We are in a state where the easy single-approach answers have been done. We must accept that our future will use a combination of many technologies. None of the solutions will be simple, but we have computers and small motors to accomplish continuous adaptation, giving simple easy to use final products. America, we have everything we need, even supercomputers in the GPU's in our home gaming machines (great excuse to get one ;-) ) Let's get inventing-it's what we do!

The window application is really fascinating. And, if they can get good longevity and low manufacturing costs could be a game changer. Double pane windows are a huge improvement over single pane, but still very much limited by the fact that convection currents between the panes can transfer heat. Being able to lock up air inside an aerogel would be massive for improving efficiency. As an example of just how bad today's windows are, I have very well insulated walls (spray foam and blown in fiberglass). In front of my windows I have dual cellular blackout shades which add something like an R-5 to the windows. Despite the fact that I have modern, double pane, casement, low-e windows, you can feel significant amounts of cold air from around the edges of the shades. And it isn't that the windows are leaking - it's just that the windows are that much colder than the room.

It's challenging to find commercial suppliers for residential aerogel windows -especially those building "German" or European tilt windows. Thanks again, Matt.

Wow, what an interesting video! I appreciate the information on alternative cooling methods that don't require electricity. The examples provided were very helpful in understanding the potential applications of these methods in our homes.

I see a potential problem with the hydrogel component. I live in Arizona and use humidifiers during the drier months. Our water supply is very hard. After a few weeks, the evaporative filters are ruined by the accumulation of minerals left behind as the water evaporates. Using a water softener doesn't help, as it just replaces the "hard" minerals with "soft" sodium chloride, which still clogs the filters. I suspect that the hydrogel will suffer the same fate as the water evaporates, leaving the minerals behind. You would be compelled to use distilled or demineralized water.

@ChristopherFranko

Жыл бұрын

Dont AC units create water? Couldnt you use the drip from an AC unit to create the water for the aerogel>

@DavidKutzler

Жыл бұрын

@@ChristopherFranko Interesting Idea. Strictly speaking, AC Units don't "create" water, but, they do pull water out of the atmosphere by condensing the humidity in the air on the coils. The average relative humidity (RH) for Arizona is 38.5%. For comparison the average RH for Colorado is 54.1% and for Connecticut is 69.2%. The Arizona RH of 38.5% is for the whole state, which includes mountainous regions, like Flagstaff, but most of the population lives in Phoenix and Tucson, which are in the Sonoran desert. I'm not sure how well this would work here in Tucson.

In the US at least HFCs are not allowed within air-conditioners anymore. We use 401a currently and are moving further away as well. 401a is an HCFC. R22 is the HFC we used to use and it's not even allowed to been outlawed since 2020 and was being phased put before that. In 2019 the only way to get it was taking it out of old units or the remains of what people had on hand at the time.

@wildcaveman5310

Жыл бұрын

I think you mean R22 is a HCFC. CFC (such as r12) was banned in 1994. HCFC was what recently got axed due to the chlorine (the first C in that) whereas HFC doesn’t have chlorine and is still ok. R410a has been the predominant replacement HFC. But it is also on the phase out chopping block starting in 2025 because it technically has been producing more green house gasses than r22 (good job epa dunces). You have the right idea though.

I love the stories about using materials science to solve our energy problems. The fewer the moving parts/complexity, the better.

@pwnmeisterage

Жыл бұрын

There's always limitations, though. This hydrogel periodically needs to be "watered" to continue operating properly. While it turns out that water tends to be scarce in the hot, dry areas which need cooling most - indeed, water is more expensive to transport than electricity. But it does promise to be an improvement. Another tool, another option, another solution.

Prior to the invention of the air conditioner, people who lived in the more tropical/warmer parts of the world designed their dwellings to utilize natural cooling. Design/architecture, engineering, and materials used were studied and factored in relative to the number of people living in the dwelling. The problem with residential and commercial cooling is how densely populated areas are. Even with non electric or mechanical cooling solutions/material, it won’t really help if the architecture was designed to utilize current AC solutions. There are urban areas whose overall design are very good heat traps. But I like the idea of going back to cooling solutions that do not require power, if it will help reshape how cities and residential areas are engineered. It might even lead to a better population distribution instead of having densely concentrated/populated areas.

Passive cooling as its limitations and it may work fine in a dry climate. But when you're dealing with 90% or more humidity levels you need Refrigeration to take the humidity out of the air.

@jensholm5759

Жыл бұрын

Thts right and why I only use air to air heating for the 3 big rooms. I has 3 steps. Warmong/cooling - replacing old air to new and make the humidity to a good one. Before that we insolated the old house as well as we could. So You have to do, what makes sense. No mushrooms behind the sofas.

The addition to double glazing is interesting as that is the sort of high cost and quality application that would make increased performance worthwhile

Ac units don't release hydroflurocarbons. That was said as if it's a natural by-product of normal operation. They only release refrigerant when something is broken on it. Hence why in most countries, you need to have a license to install and work on them. Also. Most new air conditioners don't use hydroflurocarbons, refrigerant technology is always changing, and in australia, they don't even sell domestic air conditioners with this type of refrigerant anymore. Refrigerants are an amazing technology that triples the output of any power put into the system compared to non refrigerant based heating and cooling systems. Like oil radiators, and definitely better than burning wood indoors in poorer countries that massively impacts people's health and the environment.

In my house years ago we had all the houses updated to be more energy efficent ... except for one window in the house. The difference is extremely noticable on a cold day.

This seems to great for the windows. There are 97% reflective white coatings (have you not covered this?), exterior insulation, heat & moisture exchangers, and whole house sealing that can all be used in combination for a very energy efficient building. Add solar or wind and net-positive is reasonable to expect. Our building codes have to be updated to make these efficiencies required.

I’ve been doing the fan-in-the-window trick since I was a kid. If it gets cooler at night you put a fan in a window strategically placed to circulate air from the outside through the whole house. This cools down, not just the air, but everything in the house.

@steveschritz1823

Жыл бұрын

If you really want to get fancy you get a fan with a thermostat.

@UndecidedMF

Жыл бұрын

That's a great solution for getting the house to the outdoor temps/humidity levels, but you'll need additional solutions to get below that.

@justingriffin2546

Жыл бұрын

@@UndecidedMF Regarding unconventional cooling, I'm doing a house currently, 24v dc chestfreezer- 2/3 full of ice with copper pipe coiled thru the ice, circulating pump slowly circulates antifreeze thru it up to a small truck radiator above it. Above the radiator is ducting with 12v fans sucking the air to the rooms-All DC with 60 panels on the roof...(a condensation tray under it... oh and fish fingers etc in containers on top of the ice.... I'm not applying for a patent....Love ur channel btw...

My Answer is NO.. If I have understood correctly then, this technique reduces inside temperature by (1) reflecting sunlight (2) and holding water (3) allow air to pass through which cools down roof.. 03 stage.. We can find easy, cheap, easy to available, easy to install materials as a alternative..(1) We can cover roof with shades, (2) we can use sponge type material which can hold water and (3) so that air can pass through the sponge to cool down roof. Have you ever seen Indian traditional way to cool down water?

REALLY glad I stumbled onto this vid! I hope this happens RIGHT AWAY! I hope the retrofit to an AC unit will be affordable for us all. I am SO ticked about the inequities of this world. Shouldn't have famine in other countries - Thanks again for this good news, Matt.

The new intro is very cool, Matt. Thank you for keeping it short so we could get right to the great info you always give us

@user-zn4pw5nk2v

Жыл бұрын

"Evaporative cooling, perfect for regions with lack of available water, you just have to moisten the hydrogel with the water you don't have, every four days" you should check your definition of great, the wind through roof cooler was better for people cooling, because it actually doesn't consume anything at all, there are building designs that use convection currents for passive cooling, using evaporative methods has its drawbacks(needs water), natural heat flow doesn't, you have heat you get heat flow (hot air goes up) use it to collect the colder air from below, you just need any amount of wind outside even the one generated by the building's heat, it will work as long as there is a colder region anywhere above, space for instance, some black body radiation to use it, the rest of the aerogel sandwich was fine. But some solar panels and some diode coolers could also work to concentrate the heat and send it up (less efficiency (2 energy to 1 heat), 8x more electricity use than standard heat pump (AC ~ 4 heat, 1 energy), no gases released on disposal, no moving parts only aging due to heat up expansion and miss use(over voltage bad for anything) over a normal solid chunk of metal aging)

Love the channel Matt. I would think that a fully clear window is not always necessary. If a translucent aerogel insulated skylight was a simpler solution it could offer many benefits, summer and winter. Adding light where needed without heat gain or loss especially in the commercial marketplace.

@UndecidedMF

Жыл бұрын

Thanks, Richard. Good callout on the skylight!

@ridethetalk

Жыл бұрын

@@UndecidedMF Not a big fan of skylights - they break the insulation layer and are also an area where leaks can develop. I much prefer a solar skylight where a solar panel on the roof connects to an LED panel inside which gives light in much the same way as a skylight (coming and going with the sun) but which you can energise with mains power at night to provide a constant light after dark. Only a pair of wires from the panel to the LEDs...

@MaximinoReyes

Жыл бұрын

@@UndecidedMF What about a callout for a Transparent form of Silica Aerogel to augment the Efficiency of Photovoltaic Panels?

@sjsomething4936

Жыл бұрын

@@ridethetalk but then you don’t get to see the stars at night or awesome lightning during storms 🙂. So far (knock on wood) no problems with mine, I have 2 in my roof since I bought the house (over 22 years ago) and I’ve had the roof replaced 2x. Aerogel would probably be really helpful in reducing the heat buildup in the attic, partly caused by the skylights. I’d definitely consider new ones with aerogel when I replace them, which eventually I’ll have to do as they’re showing their age.

@aquietwhyme

Жыл бұрын

@@ridethetalk There is always the fiber optic middle ground solution, though that doesn't provide light at night, obviously, unless combined with LEDs.

Matt, I just your channel. I am loving it. ❤❤ I am exploring building an off grid glamping project in the Azores and you are informing me on the good the bad and the ugly.

I think the future is combining A/C units with aerojel panels. Possibly in the window above it, or in the actual system. Could also work with the fridge, since it's always expelling water/ice anyway.

Matt, When I lived in the high desert in San Bernardino CA, we used 'swamp coolers,' as normal AC froze over in far less than our 120 degree July weather. They were plumbed to receive slow drip or fine spray hydration, only while running, as water was scarce. Air blown through wet straw mat evaporative coolers did provide heat relief of up to 40 degrees F. but 85 is still hot. They helped me with bleeding, dry sinuses too, via airborne moisture but they had a serious health problem with black mold formation. Replacing infected, expensive mats proved insufficient, because once mold got into duct work, the entire system stubbornly stayed contaminated. Could an aerosolized foamed glass work as the white evaporative layer? It would be potentially flushable with fungicides or to rid it of dust or allergens like pollen. Glass is a bio-inert sol. Borosilicate glass has high heat resistance. Perhaps microtubials for moisture transfer? We used wax sprues, which melt away in the kiln, while making bronze castings. Corrugated glass could be stacked cross grain and layered like safety glass with a porous plastic middle layer. We might be able to recycle glass and plastic as raw materials too. We used polarized plastic film on sun facing windows. It helped, but being grey and restricting light entry, the film turned the rooms dark. The clear aerogel sounds like an improvement. $$$? In the UAE, many kids get lung disease from silica particulates. Air filtration matters. Stagnant air is a misery, especially if it is humid with poor air quality. 'It's not the heat; it's the humidity.' is not just a cliché. One rainy South Jersey summer with no air movement will convince you. Matt, Stay Hopeful. You are such a blessed relief from politics, I can't even tell you.

@justingriffin2546

Жыл бұрын

nice story. you probable already know that white vinegar kills mold amazingly, especially the pure stuff....i had similar problems in the tropics-endless rain....

@markme4

Жыл бұрын

Why was your AC freezing up? I would never hook up an evaporative cooler to a ducting system

@mr.monitor.

Жыл бұрын

@Mark Me ya it really shouldn't freeze up regardless of outdoor temperature if it's charged correctly and has a clean filter. I think you would use the swamp cooler separate from the ducted system.

@justingriffin2546

Жыл бұрын

@@mr.monitor. That's correct the freezer is just has copper pipes to cool the fluid in the copper pipes...even moisture in the room air condensates into a drip tray. Its 2 systems -not a swamp cooler. Im in the tropics i don't need more humidity....

@geoffreymentink9570

Жыл бұрын

I would be concerned about Legionella. Plus these only work in dry areas, such as Melbourne, Australia, but not Brisbane, Australia.

very interesting info. I have 19 yrs experience and training in HVAC and in my experience "Chillers" combined with "Economizers" are the greatest efficiency gains EVER ! ! would love to hear a comparison. I have only seen modern Water Chillers on commercial buildings but Back in the 50s and 60s there were Water Chillers on many homes in northern California. CONCEPT: the condenser coils are not cooled by ambient air - they are cooled by circulating water that drops through an "Evaporator" this allows the condenser to be cooled to far lower temps than air cooled condensers. ECONOMIZERS are simply "Outside air exchangers" which use the cooler outside air at night to be used instead of trying to cool down the warmer inside air - again; almost exclusively used by large commercial buildings. Would love to talk to someone about designing smaller units for individual homes because it is extremely efficient in comparison to "Mass Produced" "Planned Obsolescence" Units that are Ubiquitous today.

@prakadox

Жыл бұрын

For the life of me, I can't understand why people stop using a technology that works. Why did these chillers go out of use? In India, I believe the following were the reasons. Air conditioners were more powerful than chillers/desert coolers and people appreciated the de-humidified air compared to the humidity load that the desert coolers / chillers typically pumped into the house. Was that the reason in Cali as well?

@BlackMamba-lt8oe

Жыл бұрын

@@prakadox people in india are smart theydont use coolers that's useless

Correction, air conditioning doesn't just release CFC's unless you just cut the refrigerant lines or purposely release the gas which is illeagal to do they do not just pump out CFC's. Other than that the jell hopefully will become a valuable resource if they can produce it cost effectively.

@jensholm5759

Жыл бұрын

Thats right. Only a feww % of that gas is recycled but we are doing a little better yaer for year. Refrigirators and freezers are recycled up to 80%.

@marktapey7678

Жыл бұрын

@@jensholm5759 In the United States it's mandatory for all refrigerant gas in any appliances including a.c. a.c. units to be reclaimed and recycled. No scrap yard or dump will take it unless it's done. If an auto a.c. is changed or serviced it also is required to be reclaimed. So I'd guess that's more than a small %

@jensholm5759

Жыл бұрын

@@marktapey7678 Thats better then hoped for.

It's certainly fascinating. I always look at the these advances, though and think, "still not thinking about an end of life plan plan for the product first."

Know what's really cool? Choosing a style so cool for a You-Tube channel, you don't have to improve or change anything ever and it somehow remaining the best of it's kind.

I put a IR reflective film on outside of windows in my flat, they block about 10% visible light but they helped me cool my home in summer by about 4 degrees Celsius. Passively.

@jensholm5759

Жыл бұрын

I dont know Your country but we can buy those windows as standard. In the winther they keep the temperature inside better as well. And 10% was a learning. Plants in thewindows grow very slow and some has been donated to heaven. So the shoise is to look a´t the bill for varming up and comfort.

@WinghavenET

Жыл бұрын

@@jensholm5759 Yes, we can buy such windows here (Poland) but I wanted a low cost retrofit, rather than having to replace entire panes. I still plan to replace entire windows next year, because they are already old, just needed a quick solution. I don't have plants near windows because I have cats and so the only plants we have are shade-liking plants on high shelves.

@jensholm5759

Жыл бұрын

@@WinghavenET A quick fis is better then none.I wish You good luck.

Interesting product. A more detailed follow up on the "aerogel" double pane windows would be useful

A long time ago people in the south built these houses with brick columns threw them they were open under the house it was usually raised 3-4 feet and they were open in the attic it would create a cooling affect threw the home drawing in the cold dense air in the crawl space and cooling the attic

You should do a video for the (us) people on the gulf coast who at only once in my life time reached 8°f and are always feeling triple digits in summer w/ very high humidity. Give us a combo video of a budget and the best build please.

Hi Matt , thanks for your videos. I have made myself some experiments at home trying to save energy using different materials and techniques and until now I have managed to reduce my energy consumption almost with 50% comparing with the consumption of my neighbors in Amsterdam, Netherlands. So isolating my windows with semitransparent foil I have achieved a saving of almost 40%. Of course there’s more room for improvement but sometimes you can achieve very good results with some simple solutions 😊 which don’t cost a lot of money and new experience materials. Isn’t it?

Because of this channel, I remove or add something new to my dream home wishlist every week. Can't tell if it's making me more or less undecided

@VirakNgauv

Жыл бұрын

Ahaha same! New tech for my extremely passive dream home. 😂

@THEdaveyorke

Жыл бұрын

I do the exact same. But now I need to win the lottery to find my dream home. Haha

@UndecidedMF

Жыл бұрын

Ha! Sorry about that.

I think the aerogel might be great for insulating homes and windows. As for replacing cooling or the refrigeration cycle. I just think we need to find another refrigerant that is low pressure and build efficient systems like having digital compressors they can ramp up or down.

Perfect, I was looking for a good addition to a cascading self powered system

In India, earthen pots are used over rooftops during hot summers and the temperature comes down by atleast 7-8 degrees

I think it would be amazing to use to help existing ACs, love how it would be used to be an additive rather than substitution. Also love the idea of the aerogel windows...my windows are garbage. I wonder if any of this could be flipped for environments where we have cold too.

@keith_dixon

Жыл бұрын

It wouldn't work because ACs do the same thing but orders of magnitude better. The two technologies are incompatible.

Bring it on. This is exactly the kind of technological development we need to ensure a sustainable civilization's emerging in the 21st century.

Fantastic episodes Matt, you are the man for the latest on technology and anything on climate change. Thank you

Hey Matt. Love your channel and research. I'd love to hear your take on Aptera's current situation. You are excellent at gathering, deciphering and presenting information.

@UndecidedMF

Жыл бұрын

Thanks for the suggestion. I've actually talked to them a few times ... might put together a future video (TBD).

@apple1231230

Жыл бұрын

I’ve got a pre-order since a year ago and this will be my first new vehicle ever!

@jopo7996

Жыл бұрын

@@apple1231230 That's awesome. Good luck!

This sounds very interesting for things that you would like to passively cool or improving existing air conditioning units. But I don’t see it having value for housing insulation since in the winter you want to keep that heat in. Unless there is some way to stop/reverse the cooling effect, maybe if the hydrogel is dry. On another note have you ever looked into Magnetic refrigeration? I had done a research paper on this in college and wonder if anything had really happened with it.

The problem with double/triple glazing windows is mostly radiation, not thermal conductivity. Currently, there are glazings that reflect IR and help retain the radiation inside, even adding a curtain helps a lot.

I have been a HVACR mechanic for 32 years .CFC were phased out and HCFC are almost completely phased out from the CAA .HFC are starting to be phased out due to GWP and HFO ‘s are the new thing they have no ozone depletion and 1 GWP potential .This will be the second time I have been through the phasing out of refrigerants .There will be Chaos for years with multiple “drop in replacements” and competing types that over lap cause a myriad of issues and headaches from contractors not labeling the type in put in a unit to technical issues like zoetropes separating in the case of small leaks changing the dynamics of a system to the oil types changing from mineral to Alkybenzene to Poe which is really hydroscopic and if the oil swaps were not done right and the BRIC number was too high causing damage to systems . Until the industry settles in some key ones .Last time we went from cfc r12 to 134a ,r502 to r404a , r22( HCFC) to 410a and r11 to r123 with about 2 dozen others types being in play for a time as well . We were just getting settled in and now the HFO swap so I welcome something to change the game entirely .

Aerogel is all well and good, but until it comes down in price I would suggest focusing on heat pumps instead of AC (or modify AC's to be heat pumps instead) as that technology already is available.

Combining this technology with photovoltaic panels to cool them would be very nice 👌

@GoodEnoughVenson_sigueacristo

Жыл бұрын

How do you envision that working? I've thought of circulating underground water behind the panels in order to keep them cool in the summer and snow-free in the winter. For thermally balancing panels, that seems to be a pretty good option to me. Or if cooling was the only concern, ducting could be used to passively pull air from the crawl space and out across the backs of the panels.

I think there are a few issues. Namely, evaporative Cooling is extremely useful, in places where it's dry like Pheonix, West Texas and California. But, in places on the East Coast, East Texas and the Southern US. It's actually incredibly Humid. Air can only hold a certain amount of Moisture and so the efficiency of having Water Vapor carry out the heat decreases dramatically when it's humid. And in these places in particular, there's an average Humidity of 80% or higher, yet the temperature frequently sits in the Hundreds or more especially in the south, this means Evaporative cooling is extremely ineffective there. Air Conditioner's were originally built to remove humidity from Factories, it just turns out they make things cooler as well as a result. Radiative Cooling has a lot of potential though in general, if houses were built to be far more resistant to Heat to begin with and had "Radiator's" in the form of metal barrier's between themselves and the sun, that would dramatically decrease the need for any sort of AC until the temperature's get unbearable.

Doing something to the glass panes is ok. But a lot of windows of earlier houses aren't insulated around the window itself. I helped a guy do blower tests on houses. A lot of air came in around the windows, especially under the window. You could also take his special camera and see the hot and cold areas. So when the window guys came to put my new windows in I looked around and sure enough, mine didn't have insulation. Or it was cellulose and dropped to the floor area instead of on the wall. So I pulled some board off and put some there. Lots warmer now.

Another great video! I would like to know if the water in the hydrogel needs to be simple tap water or if something like distilled water needs to be used to prevent mineral buildup. If it needs to be distilled, how does the energy-producing distilled water compare to the energy used in traditional air conditioning? These are the questions that keep me up at night.

@Rickmakes

Жыл бұрын

I was wondering the same thing. Distilling water is very energy intensive.

Really interesting application for Aerogel. It’s a very fragile material, so I wonder what it’s shelf life would be in the MIT use-case.

@nutzeeer

Жыл бұрын

There are also aerogel combined materials like pipe insulation. Less effective but flexible.

@justinw1765

Жыл бұрын

There are various different kind of aerogels. There is a polyimide (what Kapton is made out of, or rather that is a brand name of this material) based aerogel that is quite strong and durable. The old, classic silica based aerogel is quite fragile because it is very brittle.

@johnowens5342

Жыл бұрын

Is aerogel UV stable long term or does it break down?

@Spark010

Жыл бұрын

@@johnowens5342 the gel in this video discolours over time but I’m not sure if that reduces its effectiveness.

@nutzeeer

Жыл бұрын

@@johnowens5342 its silica. glass.

I think we just need to be building new housing smarter, in ways reflective of local conditions. Although I imagine something like aerogel would be ideal to integrate into industrial buildings, particularly for processes that generate a lot of ambient heat

I wonder if you heard of what some call "sky cooling paint" When i heard aerogel letting infrared through i remembered on similar principle the paint works by "exchanging heat with sky" because it emits radiation wavelength that isn't absorbed by atmosphere (if i remember correctly) The drop below ambient temperature was i think also about 5°C or more It consisted of microspheres (don't remember the original chemical but CaCO3 supposedly does the same) and it was mixed into "paint like" consistency in acrylic with acetone

Anyone know if the aerogel windows also be more soundproof than regular windows? or would it be worse, or the same? I've been trying to think about ways to soundproof windows for a home studio.

More interested in the single-pane replacement windows. I live in a Mid-century house with a lot of single pane glass, and have resisted swapping it out with IG's due to the maintenance issues around seals breaking down and moisture migration.

@Montusama

Жыл бұрын

Insanely simple solution here. Interior or exterior storm windows. Bam! Air gap.

@gregthorne4292

Жыл бұрын

@@Montusama used to have them. Lots of dirt and dead bugs get between, plus they look terrible in most installations.

I do not want to go digging through all of the comments to see if someone else has said it, so here we go potentially doubling up on an idea. If the ICER (and similar) designs are using evaporative cooling, and aerogel has pores that are so small, can aerogel also be used for desalination? It occurs to me that if one could use sea water rather than fresh water it would be far more practical in a lot of parts of the world. So if the product could be used to desalinate the evaporating water, and there was a good way of collecting the vapor, this would be incredibly useful. I do not know about the probability of the aerogel simply becoming clogged with salt crystals or any other kind of problem like it, but it is a thought. If the system always has to rely on distilled water to keep it functional I do not think it can be achieved in scale. If we could just make clean reliable water available more cheaply to the world now, that is a huge market. So taking the water we can purify and then sending it back into the atmosphere (where water vapor acts to enhance the greenhouse effect) seems - not better. Cool concept, though. I am certain that it will find an abstracted use in smaller scale for something more critical than basic comfort.

The idea is nice, but here in the Netherlands where our 25kW solar array on average only gets ~11% utilisation. That array produces as much as running a 2,75kW generator 24/7/365. In summer those panels produce more power in two hours than my airco uses in a day.

I would be curious about how well it would be as a thermal barrier for vehicles too. Firewall, exhaust systems, general insulation. I see it being popular in these applications as well.

Look up this article at PV Magazine: "French startup unveils new residential thermo-acoustic heat pump Equium has developed a new thermo-acoustic heat pump core that reportedly produces 3 kW to 4 kW of heat for every kilowatt of power it consumes. It says the refrigerant-free device could generate domestic hot water at temperatures of up to 80 C. JANUARY 2, 2023 BEATRIZ SANTOS

Thanks for the video. I appreciate the education you supply. One thing: Light years are a measure of distance not time.

WOW!!!! THANK YOU, FOR REVEALING ALL OF THIS AMAZING TECHNOLOGY!!!

I wonder if it would be possible (or even beneficial) to somehow combine this with the passive-cooling white paint NightHawkInLight was experimenting with to make the cooling even stronger?

I remember watching a documentary about Aerogel and one of the major problems was that due to the manufacturing process, it cannot be made in large sizes. Is that still the case or have they got round the problem (I remember hearing that it is also very expensive to produce) ?

@wisenber

Жыл бұрын

"(I remember hearing that it is also very expensive to produce)" It's expensive and isn't very stable in its pure form. It would be an awesome low volume option for insulation if it were cheaper and more stable. I have an Aerogel lined jacket that all but eliminates conductive and convective heat loss. However, it cannot be laundered or dry cleaned, only spot cleaning.

You can put four inch pvc about four feet deep in the ground and have it with a computer fan with a solar panel and battery charging also to store Ebro for the fan to run at night when the sun is down and lit the fan on the outlet side of the pipe to pull the air the out the pipes cooled air. Thought of this many years ago. Run it during the winter to keep the place from freezing temps too for like a summer home when you’re not there in the winter and it keeps the pipes from freezing without electricity.

I can only imagine the impact of introducing this across the planet to all buildings. It would have a huge impact. Let's hope the world heads in that direction instead of using air con.

Most architects will tell you that the best way to cool is to not let the heat into the building in the first place. A lot of installations - particularly warehouses, shopping centres and industrial buildings - will do rather well with this I suspect. I admire pragmatic solutions which let us evolve our way towards the proverbial nirvana, too many “activist” types want all or nothing and right this instant; technology can rarely deliver on this and it’s far more realistic to combine advances like these on a more gradual basis, aim for the achievable. FWIW aircon systems in cities don’t just consume power - they pump out a LOT of heat themselves so overall there’d a broader net lowering of ambient temperature using this particularly when you’re talking about areas with frequently idle wind patterns. I’d like to see these broader combinations used the way Jaime Lerner was trying to achieve in Curitiba with their “outdoor air conditioning” too. A nice augment to this would be a way of capturing ambient moisture for use in the system; probably more useful in more humid climates but more necessary in drier ones. It’d be interesting to see how much water they end up needing to use for a practical in-production design.

Ban gasoline, ban gas stoves, buy electric vehicles, use electric stoves, but don’t use any electricity....see where this goes.

@Moe-Moe121

8 күн бұрын

Then produce non recycling lithium waste that equal to nuclear waste..

@juniusprawira7425

5 күн бұрын

It will goes to stone age orrrrr magic age where all things fuels by mana :p

@Jorora

2 күн бұрын

Actually it’s more like ban cars in general. Swap it for trains, bikes and public transit. Then you can use as much electricity as you want and reduce housing and environmental costs. Cars are just not sustainable in any way. Electric cars are cope and don’t really solve the problem. It would be best to just use trains like other countries and make cities walkable. This would preserve the most amount of electricity and keep things relatively sustainable. More reactors too, that one’s just people overreacting.

Aerogel has been out now for several years. Matt, I would like to see some videos on the progress in making products we could actually build a house with. How is that going? How is the refinement of the processes to create these materials and bring the costs down going? What are the challenges scientists and engineers are now wrestling with? It would be fascinating. We need to be implementing solutions in the next 5 years to address our energy consumption. I my apartment for example, I could retrofit an insulating sheet made from aerogel to the inside walls. a 1.5" thick sheet would add about 15 to my R-13 walls, basically cutting that heat load in half. Also aerogel window panes, double paned, could increase my R-1 windows to R-5. The window panes need to not be so frangible, so may need to be stabilized by gluing to a sheet of glass, depending. If the cost is higher, that can be ok, if the products can be made to last a very long time. Guaranteed financing plans and subsidies can overcome the cost reluctance. Many of us are ready to implement all this now, exploring all the ramifications and paving the way for better products that will succeed for the long run and solve our energy & climate dilemma.

I think it is important to note that replacing localized carbon emissions with broad scale water evaporation would change weather patterns and produce more heating over time. Water vapor is much more effective as a greenhouse gas, so introducing a tremendous amount of water vapor as the solution to cooling to replace carbon dioxide looks to be a cure that is worse than the disease. We don't know what would happen if we just turned cities into vapor production facilities. I can only imagine the repercussions of such an implementation. And a gentleman below made a point about dust and debris sticking to the aerogel. I second this. From an engineering perspective, while the left over particulates would not pass through the aerogel, they would still stick to the gel or the rest of the inside of the cooling unit. He is correct in his assessment that the water would need to be distilled to prevent particulates from clogging the system. A lot of work would have to go into a system like this. It's a fun idea, but seems wasteful and impractical in its current form.

Yet Another "breakthrough " that isn't one .this channel is the best for Vaporware

@weeblewonder

Жыл бұрын

If this channel covered wide-scale commonly used technologies. The channel would be called “Decided” 😂

@UndecidedMF

Жыл бұрын

"Breakthrough" is nowhere in the title or script of the video, so you're applying that yourself. My videos are about exploring what's happening in the sustainable tech space. A lot of times that's looking at tech in the lab to see where things might be heading ... not just where they currently are.

@DrWhom

Жыл бұрын

@@UndecidedMF you know what you are

Did they insulate under the concrete pad? I did this in my garage 4 years ago and it has made a huge difference. Unheated and -40C outside and my garage will be between +5C and -5C depending on the length of cold snap and garage door opening frequency.

I live in Florida and I have been looking for options to air conditioning for years. Many of the options used by our ancestors are not allowed to be built into our homes today. I did add solar powered air conditioning to my workshop so I have 74 degree temperature which is totally solar powered. The initial cost is mostly in the battery. If battery technology gets better and cheaper then this is a much better option. I am hoping to either replace or supplement my central air conditioning with small multiple AC units powered by solar.

Over here we start putting plants to shade the Air-conditioning unit on the roof as the unit is heat by the sun it will run harder and use more electricity. Olden days people in warmer climate deliberately make the roof drain rain water slowly, when the sun is up it helps to prevent the house from heating up fast.

u always have such intriguing themes, thx alot! very interesting and informative ^^ definitly would upgrade to a material like that if it became widely available, at an affordable price ^^

I would like your opinions on this idea I have for an underground electricity generating system. There is a reservoir of ferrofluid at the top of the system, from which a tube goes downwards about 500metres where it drives a turbine. The ferrofluid then collects in a bottom reservoir. I then have thousands of tubes (straws), immersed in the ferrofluid, that go upwards for about 34feet where they curve back downwards for a couple of inches. Underneath the downward curved end of every tube, is a magnet, which pulls the ferrofluid onto itself forming a nice prickly blob. The magnet can only hold so much ferrofluid, and the excess will fall into yet another reservoir just beneath the magnet. This reservoir has thousands of tubes leading up to thousands of magnets, filling yet another reservoir about thirty feet above. I repeat this process until I fill a reservoir that is above the original reservoir, which it feeds. Obviously the tubes and reservoirs would have to be pre-filled before the system would start working and it would be a nightmare to build, but is it possible? How high can a magnet pull ferrofluid? I've heard that neodymium magnets can last 700 years, so have I just invented a clean energy source?

One thing i have wondered, is if we could use a non-metallic housing for our air conditioners. Also, when I was a kid we changed to plexi for windows, which transfers heat quite a bit slower than glass. But, we stopped using it when we realized that plastic and ultraviolet light do not work well together. Do we have a better material today for windows?

I have discovered a way to substantially cool air without refrigerant or a compressor. I've built a working prototype and the apparatus uses about 90% less electricity than a conventional A/C system, costs far less to build, and has much fewer moving parts. It is 100% environmentally friendly and has a common part to circulate the air, i.e., the blower. The footprint is the same as a conventional A/C system as well.

I never had to finish the work but I used what they did prior in middle east. You can have semi porous clay with water under it and this can cause cool from water evaporation. While the clay blocks the sun ray. If there is no sun, wind hitting the wet clay will cause evaporation and reduced heat as well. And this can be mass scaled.

@NLPexperts

Жыл бұрын

This is a terribly inefficient and hard way to achieve a humidifier. A mag lev fan blasting a pale of water or using solar to lift water and drip it down a wall will be at least 3x more efficient. Just put loads of pipes opening in your room, air is pulled into pipes is best free advice. Nothing will get you from 40 degrees C (here at midnight in August) to 20 degrees other than huge amounts of energy usage.

I would love them, I think they will first be useful for superconductors. But I'm really looking forward to all if it.

Not to mention the amount of heat / water vapor from cooling towers that have changed the wet bulb temperature by 10 degrees since the a.c. was designed for USC.

I put a ceiling fan in the ceiling, 2nd story of my house. I've used lots of window fans in past with little relief, but this monster does the trick. Blows hot air into attic (which has several exits) and that creates a pull to bring cool air into the house.. I use it during summer, mostly at night, leave windows open farthest from the fan. Close the windows in morning. I'm down to using AC for about 2 weeks each Michigan summer and I could probably stop that too. MUCH cheaper than ACing whole house!

I recently lost weight (all) and started walking, after a year I don't require A/C anymore, (Florida) I know everyone can't do this but the correlation between my health and the planet is real.

This reminds me of what I’ve been hearing about how AC units might be much better used as a heater by flipping it around in your window

I would love to use/test e ASA or CNC as an insulator in our travel van. I'm about to use Rock Wool or Acoustic Tiles out of necessity. But Aerogel type of products sound amazing...

It basically works as your skin. Which is impermeable at the first layer but is filled with micro ducts that allow water to evaporate on it's surface. It won't work in humid or swing temperature environments as said. And it will consume loads of water in dry hot climates, where it's suppose to be ore efficient.

Compressed earth blocks could solve it over night. One machine can produce thousands of manmade chemical free blocks out of dirt and Portland cement and produce modern looking homes that stay comfortable temps without AC or heating year round. But the construction industry is so interconnected that getting them to adopt construction methods that don't involve building giant tinder boxes is an insane lift.

Biomimicry of termite infrastructure is awesome engineering incorporating heat and cooking surface area control management. Worth researching 🤙🏼 Great channel mate 💯👍

I'm lucky enough to live where the air has low humidity. We use a swamp cooler to cool our home. The swamp cooler could run all day for about the same cost as running an AC unit for an hour. Bonus my skin and the house plants love the swamp coolers added humidity .

a Much More Realistic (and comfortable) "Green" option would be a Ground-Loop (geothermal) heat pump. It's about 55 F year-around ten feet below the surface. They put antifreeze loops down there and pump the antifreeze to the surface. In the SUMMER: They flood the heating coils of the Central HVAC (which is INDOORS, in your basement, away from the elements) and the heat is taken underground. In the WINTER; they flood the cooling coils, (which are at a Very Low temperature, from the refrigerant evaporating) and, similarly, the antifreeze absorbs the cold, and it is taken underground, where the antifreeze temperature equilibrates with the much balmier underground temperature. Such a system is initially more expensive, but about 500% more efficient than gas heating, or a regular (air-source) AC, because you are NOT pumping heat/cold Uphill. The ground loop itself can last for a Century. And, YES, a Solar roof, or wind-turbine, can-where practical-supply the Energy for the system. You could use the surplus to charge an EV. The Only places you could't use a Geothermal Heat Pump are in the Arctic, or at High Elevations, where you are sitting on permafrost. Tall buildings can use a deep vertical (instead of horizontal) loop.

My grandmother's house was isolated with hemp. Very cheap and back then still allowed. Never needed an AC, never worried about fire hazards. But hey, one cannot make money that way...

The main difficulty with heat pumping is those darn radiating fins, they get clogged and full of debris and on the east coast the humidity is so high that they tend to grow algae and other organics which also clog the fins up. Now imagine trying to clean aerogel. Personally I think desiccant cooling (calcium chloride) is the east coasts cooling miracle. Aerogel swamp cooling would probably work well in very dry climates, but east coast of the U.S. is anything but dry.

good video. wish aero gel was cheaper. would buy. the polluting atmosphere via co2 is questionable. at present, only 0.04% of the atmosphere is co2. plants and vegetation begin to die when co2 drops to 0.02% and lower. if you really want to drop co2 levels. plant more plants. plants actual absorb co2. trees can provide shade and be wind/water barriers as well as maintain soil structure. Trees and vegetation lower surface and air temperatures by providing shade and through evapotranspiration. Shaded surfaces, for example, may be 20-45°F (11-25°C) cooler than the peak temperatures of unshaded materials.