When we first moved to the farm, we lived in a motorhome. Needless to say the hot water tank is small for six people. I used two splitter's with 8 /100 foot hoses and spray nozzles on each end. the water was turned on to fill the hoses, then left in the sun. I used a hula hoop with ropes hung from a limb with two shower curtains hanging around for privacy. The bottom on the ground had gravel with a pallet on top. We used a two 5 gallon buckets set on a bench. Each would be filled 1 with 2/3 hot water the 2nd filled all the way. we would rinse off, soap up, shampoo, then rinse off using a small pot to pour water over us. we had a place to hang our wash rag, towel's, soap etc and a place to hang dry clothes. We never ran out of hot water, and most of the time the water was too hot so we would add some cool water . ... Growing up in rural Florida, my father had six 50 gallon drums painted black that he would catch rain water in, they were mounted with tin sheets underneath to heat the water. It was set up and used with a gravity feed line. If it was during the winter, he would have one drum set over aside a campfire, it would always provided plenty of hot water. When he finally had a water pump put in we would feed the primer and pump water. We thought we had died and went to heaven.

It might be interesting to maybe remove the pump, increase the hose lenght another hundred feet, let the system thermal siphon, capture various readings as a baseline, and repeat a couple three times. Then try various pumped flow rates, insulation etc and play with "tuning" it into something cheap and really useable. Around here, such a system might well make enough hot water to supply an oil field workers laundry (washing greasers). A much needed service. Thanx Dan for planting the seed, Bro.

We've done this before to heat a pretty large above ground pool. It worked like a charm!

@Coupe420

4 жыл бұрын

How?

@alpineicecompany Thank you for the info:-) Also the pump is a magnetic driven impeller so there is an additional barrier from the motor and not the traditional friction.

For awhile we lived fulltime in a RV, we had 200 feet of black garden hose going to a cousin's house feeding the RV. Even though much of the hose, say 100 feet was buried or shaded, even in cold weather, showers would not run cold. The RV had a 6 gallon water heater that used an electrical element to heat that tank. LP was not used. You guys are great, nothing venture...

Make your black hose in a "center sagging" cone shape below the water level with the center of the cone connected to the bottom of the tank and the outer part of the cone hose connected to the side of the tank just below the surface of the water and you will not have to use the pump as the hot water will naturally rise on it's own on a hot sunny day

Hahaha :) Good to see you two and speaking on behalf of Canadian hosers, we love what you're doing.

The shorter the videos, with good content, the better. Thanks so much for all your vids!

Nice demonstration Dan.... You could calculate the heat gain 50 gal = 8x50gal = 400lb or 6.5*F x 400lb or 2,600 BTU which seems a little high unless you take into account the heat from the pump. BUT then there is the heat loss from the barrel ??? sunny side shade side wind temp??? lot of variables BUT still a good demonstration

4:20 I love the way she holds that hose.

@poindexter1387

9 жыл бұрын

😛

thanks for sharing some insight about this cant wait to build one.. great job

If this was set up as more than just a demo, the barrel could be positioned in the sun, hoizontally and appropriately oriented to the sun for the location, along with the black hose (or black pipe). Both the barrel and the hose become more effective heat collectors if enclosed in glass or plastic, and situated out of the wind. Convection might be employed to eliminate the need for a pump, at least until it's time to use/ refill the water. Thanks, GreenPowerScience, for illustrating how simple the basics of this type of system can be! Also, coiled pile through a large active-hot compost pile will produce lots of heat for months (IF done correctly).

Couldn't help but notice you were testing the water temp right next to the metal drum wall where the sun was hitting it. Would of liked to have seen it tested in the center.

As an RV'er I can tell you that you don't want to use colored water hose to connect to water you use to drink or cook. It picks up taste and who knows what else from the chemicals used to dye or color it. The black hard hose in your other video is specifically designed for plumbing without bleeding chemicals.

This is the second vidio I've see of the Rojas home projects. I commend you on your elegence and simplicity of your systems. Keep up the good work!

i noticed your hose had a shine maybe try the craftsman hose its a matte black and that thing gets real hot in the sun.

That's an ok system, as I'm sure you know a smaller reservoir would have been good and the res definitely needs a lid arrangement to keep it clean and trap the heat. Also the Chemtrails (read up for your health) in your lovely "clear Florida sky" are magnifying the effect of the sun a little,do a test on it you'll be surprised! if you ever needed to go off grid you'll do ok together by the looks, well done. Oh and your wife is lovely, good health and happiness to you both.

Hello... thanks for sharing this video... this will be a great project for the kids... a good source of hot water for their swimming pool...

John, The size pump he is using puts out very little BTU if you consider the volume of water in this system. It is true that the pump puts out a small amount of heat. I know because it is where my small goldfish hide when the water temperature falls below or around 60 degrees Fahrenheit... but isn't even enough to add an extra degree to the water temperature.

@martinemjt

10 жыл бұрын

my dad use to use this method to heat the pool water[25 years ago]. it really works.

I agree, I use pumps like this for my aquariums. They do heat the water, but typically only 2-3 degrees (at indoor temps) and that's over several hours or days.

I knew someone who used this technique to heat his inground swimming pool. Take a sheet of plywood with 2x4 sides and spray paint it black. Get you hands on a bunch of tin or aluminum (soda or beer) cans and cut them in half. Secure them to the plywood about 1 inch apart in all directions. Spray paint all that black. He used black plastic pipe that he laid through the first row, then wind down through the second row, and keep repeating until he come out through all the cans. He then covered the boxes with a thin sheet of metal, also painted black. My friend laid several of these panels on his roof connecting one box to the next and heated his pool with it. It didn't cost him anything to heat his pool other than time and figuring out how to keep it from being too hot!

@joelamaster8752

7 жыл бұрын

why the cans??

In a situation with no electricity for weeks, months or longer 76 degree water will feel like heaven. So the question isn't really what the practical application is for but rather when. Knowledge is the difference between being a survivor and being a casualty. In my state several years ago we had an ice storm. Many didn't get electricity restored for over a month. A 76 degree shower to those folks would have been seen as Godsend.

Having the water move slowly through the pipework works better than pumping quickly. Box up the coil as another poster mentioned and put a Glass or Perspex lid on it

Thanks for sharing your videos Dan and Denise. I have been subbed for a while now and really enjoy them all. Keep on sharing.

surprising it really made a difference in the water temperature. it took 2 days of heating up because of cloudy days but once the sun stayed on it for a few hours straight it began to work.

like this one more than most - it was pretty complete with the solar powered pump and panel. A simple (and cheap) round table glass laying on top of that hose would have boosted your output quite a bit. I like the mirror you put on there. if you installed it permanent you could mount three or four mirrors and for about one or two hours per day you would have turbo heating of your water ! ! !cool I need to build something like this !!! thanx again harold

Restricting the flow of water through the hose would give the sun more time to heat the water. More time in the hose = more heat absorption. Nice video.

awesome video.. funny, i was just telling someone at the farm market how to build a solar h2o heater and how to insulate and store the water.. what works good also is the plastic sprinkler black tubing that is 1" dia and you can link up a few to get mre heat transfer surface area and i think it has a better temp transfer coefficient than rubber hose. have a wonderful week.. thanks & peace.. amunra...

Good job, Dan and Denise. Honestly, I believe it is impressive, effective, and cost efficient ( low cost, good results.) And I have been looking at this kind of stuff, and solar energy specifically, for a long time. As stated, a longer hose and a mirror would be enhancements. Just a big mirror, not a Fresnel. Also you could put insulation around the drum, and a lid. All cheap additions.

@USMC-CPL-0311

2 жыл бұрын

Running a hose up and down on the roof of your house works better.

You may have done better had you left a space between the windings of the hose, and maybe put a mirror underneath. I'd say a smaller pump that runs off a solar panel (20w?), and another 100' of hose, and you would have a nice hot shower for free almost everyday. Seal the collector up in a box with a transparent cover, and insulate the drum, or put it inside, and it would probably work in surprisingly low temps too. You do great experiments, and experiments are all failures until the last one so ignore the criticism.

@TheAnantaSesa

5 жыл бұрын

With 200' of hose you can probably skip the barrel.

this is awesome.. I need this at this time of the year... I better start working on this..

Really nice. Subtract out the 100 watts for the pump, (360,000 joules in an hour,) and you still have a 1.33kilowatt-hour gain from the sunlight in one hour, and you had no thermal insulation.

@blackz06

6 жыл бұрын

.83 gpm for an hour, with a 6.5 degree heat rise is 800-900 watts

Not sure if they sell them in the states but here in Turkey almost everyone has a pre made unit like this but far more efficient. For about 9 months of the year you don't need a water heater at all, just put it on the roof and it's done. They are also designed to not need a pump.

great job for this.. can't wait to build one of this..

Holy cow when you read how many people swallow this " chemtrail" stuff it is no wonder people believe so many other groundless urban Legends. I've never found coiled thermosyphons to work well. They want to be linear and they flow very slowly. You demonstrated a good simple system that can be refined by insulation ect. And speed of the water doesn't change the temp of the drum the sq footage of sun/ hose is constant regardless of water speed. Good work Dan and Denise.

I've had a two hundred foot one that I use 9 months of the year...attached to our electric water heater. I only use a one way foot valve and it does a good job of circulating and doing most of the daytime heating of the water. We have turned the water heater to 90 which is ok as we use most of the water before sundown and some heat is left over. It cut down our electric bill noticably along with other devices we have added...more later.

I suppose you could use that to heat a pool or to preheat for your heat pump. I can tell that this is going to spark at least a few good ideas to try out. Thanks for the spark.

Thanks Dan and Denise. So you collected 50 gal * 8.35 = 417.5 lbs * 6.5 degrees = 2713.75 btu/hr = pretty damn good if you axe me! Nice job. Wonder how hot the hose got. This gives me an idea. I've got 150 sq ft of glass on the south side of my house. If I built a thin wall covered in pex tubing painted black behind the glass and ran the pex to a water heater, I could have a nice hydronic system.

I really enjoy your videos!

How much heat was produced by the pump?

I am putting 1200 feet of black hose along the top edge of my fence, and running it to my water heater. It will preheat the water above ground temp, and lessen the load on the water heater. At times the water should be hot enough that the water heater won't need to kick on I'll bypass, and drain it in winter.

@kmmdje

9 жыл бұрын

How would this work? You put a valve on your water heater and divert it into the hose?

@oldfish64

9 жыл бұрын

Kit Mason No, just run the water source through the black hose then into the intake side of the heater. The object is to pre heat the water above groundwater temperature.

@kmmdje

9 жыл бұрын

So you just plug hose into outside water spicket and back to the water heater? Genius!

@oldfish64

9 жыл бұрын

Kit Mason Yes, that will work, but you need to plumb it so you can turn a valve, and resume normal operation without re-plumbing the whole thing.

@TheAcneRemediesGuide

9 жыл бұрын

*=========>>>* *home-renewable-energy.blogspot.com* Jerry Collins

The pump is under the water. No mater how it operates, 100% of the electric power goes into the water. Heat from the coils, friction etc. to heat 55 gallons of water 6 degrees requires 192 watts of energy. 100 is the provided by the pump 92 is left for the sun. 1 J of energy will raise 1cc 1 degree C. It goes up 6 * 5/9 degrees C. 55 Gal is 208197 cc Times 6 [degrees F] / 3600 (Seconds/hour) * 5 / 9 is 192. Uses more energy than it captures. Good start though - keep working!

Every school child should know about your cool videos, and adults too of course : )

good point. also, if the hose weren't coiled right up against itself you could maximize the surface area receiving sun.

Use mirrors to reflect light to back side of the black drum. Using a space blanket really helps as a big mirror. Even using a space blacked for your hose to lay on will also increase heat temp.

@blackz06

6 жыл бұрын

No it wont

Forty years ago, I saw a solar heater work like gang busters in western PA. Wanting to extend his pool season, my buddy and I connected six closed, black, polyethylene 55 gallon drums in series and circulated his pool water through them. The drums were laid on their sides on a low embankment near the pool. On a sunny, spring day, the water coming out of the last drum in that array was so hot you couldn't hold your hand in it very long. It takes volume and surface area to make this gig work.

@Ricopolico

8 жыл бұрын

Mike, that hook-up worked so well, it surprised the hell out of us. We were thinking the discharge would be pee warm, but it was WAY hotter than that.

@kevinjackson4464

8 жыл бұрын

You needed a bigger pump!

Nice video , Dan

Dan, since these are experiments, try to go for an unpowered arrangement (like the radiator in a Ford T, if you know what I mean) Intake at the bottom of the barrel, water fills the array of tubes (or your coil) and heats up ascending naturally. the water now warmer goes back in the drum in a continuous cycle. Of course in the radiator the cycle is inverse IMHO it's a good opportunity for testing if a really green approach can be achieved. now you still need electricity

Copper is about equal with efficiency. While it does transfer thermal energy better, it also radiates heat faster so it is a net zero. Copper is too expensive. I have about 600 ponds of tubing and wire. GOOO copper:-) Also the pump is solar.

your arent fighting cloud, your fighting chemtrail dispersion, blocking out the sun is the new theme as the last 2 years. nice video.

Inspiring as always :)

Plastic tubing would had been better than a black garden hose. Also a big pump is overkill and the energy usage will be high with this pump also.

@GREENPOWERSCIENCE

9 жыл бұрын

Bonnie Flory 80 watt pump. I mention a smaller pump as an option.

@lorenzopublico5332

8 жыл бұрын

+GREENPOWERSCIENCE Sir what size of that black ?

@TheSeancassady

7 жыл бұрын

Black PVC?

Nice video and design dan, I'm thinking of building a smaller version using a old bike tyre tube and a mini fountain pump.

@chillydickie I was thinking that also. Maybe a longer hose coupled with a reflective surface, and a slower solar pump that works on a timer, so more water sits in hotter coils for at least a few minutes before it moves. Solar water heaters can work, they're just not as fast or portable. Solar systems in general seem to need backups... Rout the coil water into a conventional water heater that won't come on until well after dark.

Bet the trick is slow circulation to allow the heat to build in the hose but not so slow the drum loses heat...so wrapping the drum like you said. A temp gun and a lil tuning the flow rate and your golden!

great information in these videos. When they get better at scripting and editing. they could be the best. Cheers from Denmark

@GREENPOWERSCIENCE It's about time, Dan! If not for you, I wouldn't be the older pyro type with my Fresnel Lens and a pile of leaves for the Fall and Winter. :D

I think you should use dryer water. Dryer water has less tendancy to lose heat to the atmosphere, and is much less wet in the event of a leak. So dry your water about 20% and see how it works out.

Nice video. Nice sky 1:44 chemtrails

I think you could use one barrel up high and syphon the water through the hose to a lower one to avoid having to use electricity to pump it. Right?

@feng443

3 жыл бұрын

Not if you want to keep the water in same container.

I have watched several of your videos and really enjoy them. I was wondering what you think of the possibility of using the thermal convection of solar heated water to turn a Tesla turbine? Keep up the great videos

We put 300 foot of black plastic on a black roof, and tied it into the filter circulating pump on the pool. After it was primed the syphening effect would help the pump lift it that far. It got the pool so warm, we had to bypass it, at times.

Very little, the pump is less than 100 watts and the impeller moves the water rapidly. Maybe 1 joule of heat per minute?

I saw a system on a roof once of black pvc pipe used for this same purpose. Held much more water and sat along roof so got super hot.

I wonder how much heat came from running the pump?

You get a more efficient heat transfer with a larger temperture gradient. That is by actively pumping the water through the black pipe you don't allow it to get excessively hot. Over time this allows you to capture more heat in your tanked water. Think of the tank as a "heat battery."

Put the tube in a black larger surfaces with more reels, cover it with glass. Getting an old boiler, make two holes, input output and will have hot water all day.

I put square 5 gallon buckets of water in the sun. At the end of the day the water is great for a hot shower. North Carolina.

Солнечный коллектор из шланга это гениально! this is genius

With all the aspects of the barrel you mentioned do you think that it may be better to insulate the barrel to reduce the heat transfer out of the water?

I want YOUR Job!!! You have WAY too much fun!!!

i like how black absorbs heat, but the energy to run that pump could easily have heated the water

@DJMC5ive Assume the pump has an efficiency of 50%; 1/2 its energy goes into heat and 1/2 goes into kinetic energy (water motion). As the moving water travels through the pipe coil and then slows down inside the tank due to friction, it is converting the other 1/2 of the energy into heat. A very small amount of that heat will be lost through the pipe coil to the ambient air, and the remainder will be transfered to the water, heating it. Stirring water with a spoon heats the water.

Next time use a black table the more of a black surface you have the better

I have put together an 200 ft copper grid on my black roof and tied it in to my hot water tank so that it heats the water before it enters the tank. Now the tank runs less and cut my cost but 70%.

Note the guy is advertising water hose so we have to wonder if that's where this is headed, instead of actual solar heating. Still in all, you could skip the pump (and the battery / inverter) and do a thermo-siphon with the same hose. Install a hose fitting near the bottom and near the top of that drum, both fittings below the water level. Once the hose (or poly pipe) is full the normal reaction of the sun's heat will cause hot water to rise and cold water to fall, creating a flow through the hose based on temperature difference and without using a pump. Eventually you will have a barrel of warm water even though the top will be warmer than the bottom by a few degrees.

Thanks for your video.Could you achieve the same result without electricity using convection currents? As a former childcare worker, we would take kids wilderness camping. Using a barrel, we welded two threaded "spigots" one near the base and the other 1/2 up. Connected to a spiral copper coil running through an outdoor fireplace/barbecue, it gave us lots of hot water. With yours, attach the hose to the lower spigot, allow water to drain to eliminate air, then attach the other end to the top?

love you channel guys keep it up

Did you happen to mention the outside temperature? I seem to recall it being 85F-ish outside most of the year when I visited the grandparents in that state. You would get better results if you put some glass over the hose to shield it from air flow.

My water heater went out a while ago. Was a week before I was able to replace it. I would have done just about ANYTHING for 76 degree shower! As it was, I heated water on the stove and dipped it and mixed it until it was "warm" most likely, around 76 degrees... Oh, and if it went up 6 degrees per hour, and ran for say 6 hours per day = 36 degree rise per 6 hours = 106 degrees.. My Gas heater puts out 118 degree water. In Texas I expect I could get 140 degree water without any major issues.

Great Video. If you will cycle the water, allow the water to heat up in the hose then flow into the tank {cycle the pump} the temp will rise faster in the storage tank as well.

@blackz06

6 жыл бұрын

Very inefficient.

Warm up video after a little 27 day video break:-)

way cool at your readings with the same setup i could heat my swimming pool in 242 days

It may improve with more time as 48 gallons even conventionally heated would take some time so you need a thermal blanket to do it justice and a thick black steel sheet to place the hose on with a sheet of glass in front of that best in a sealed unit insulated pipe to the main tank. Then you will get a much better reading. Great Vid thanks for sharing

@Threesters

3 жыл бұрын

3 weeks ago?! Holy shit dude this is still active

Two weird things to consider: could a lense be used to increase the heat further? Is the hose 100% black all the way through / single material, or is it true all black rubber hose?

The helicopters are Black Hawks & Chinook flying out of Ft. Campbell & Nashville TN National Guard. I'm trying to go completely off grid (except internet). Your videos have helped and sparked a lot of ideas. I am currently soldering the last cells in a solar panel. Probably the last as you can buy the things pre-assembled cheaper than you can make them. Somebody has got to figure out a battery alternative for solar applications. Batteries too expensive. Your next project & video? Capacitors?

:D You're in Florida! I thought you were in california for some reason! Somehow it comforts me tremendously to know that you're not so far away after all. I have a few very good friends in florida. I wonder, do you do any local exposition of your projects?

I estimate the surface area of your hose to be about 7sq ft or .78 sq meter. A useful temperature for the hot water is closer to 100F (37C) an increase of 3.3million calories, you could run the machine for 6 hours or use 6 times the hose.

buen video congratuleitions

Thanks for sharing!

Hey simple, needs little refining :) Was thinking about putting something like this on the garden shed out the back, so have warm water :) Any tips? Does it have to always run ? Was thinking a old water heater tank ( already insulated ) or a drum like urs, but with a lid and insulated :) Also, if you ran it all day as a hot water service wouldn't it keep heating up to a point? What happens if gets to hot lol? Though it shouldn't boil via sun ( unless a to much heating surface area, tho got

We are by an airport and also in a direct path for an AFB 10 miles away. That or ....:-0

@MrAlvan100 The Black Matte reflects almost no sun light,the glossy radiates it away just like a mirror,so the Matte will make any surface hotter than one painted with Glossy paint as more sunlight will be collected in the surface to heat it. :) You can see this in practice if you can find any Matte painted car under the sun with one other having the regular Glossy Paint.

Hi, it may be the fact that the pump is too fast... at 1200 gph, thats about 1.3 litres per second i think... not enough time for the water to be heated up... probably try a slower flow rate... keep up the great videos.

I was watching your videos where you put the hose on the carport yesterday, I take it it didn't work out too well up there? How about a coil of copper pipe and a fresnel lens to do the work???

this is awesome.. we don't have black hose here so I need to paint it black.. and its also heat great..

@GREENPOWERSCIENCE

7 жыл бұрын

GREEN hose works very well too.

@superspeeder I will repeat, I am TOTALLY in support of these videos and the thought provoking messages they bring. What I don't support is internet garbage that gets in the way of facts. It is totally practical to use solar to heat a swimming pool! Peole do it all the time, and more of those who don't SHOULD.

Great idea...but...Garden hoses contain very toxic chemicals in them; don't want to use those for a shower or any potable use...Either use "Potable water hoses", or use PEX tubing, painted black, or, placed in a glassed-in box. Like that mirror!

I'm planning on making one just like this, but was going to use copper tube instead. Do you think copper would work better? I was planning on painting it black too

Nope, a loop of the pump alone has no detectable heat rise over a one hour period. The impellers are not that of a normal pump. The 93 -100 watt CONSUMPTION of energy FOR 950 GPH leaves no electrical inefficiency for friction water heating. The impellers are magnetically driven separating any thermal heat exchange from the motor's natural heat production. Centrifugal Pumps designed for water lift are 1/10th the efficiency of this type of pump and do over time produce aqua friction/heat.