I hope Mike you make this super efficient unit for sale !! Humanity needs people like you who actually work on making things help mother earth and all that live on the planet itself. Good luck and peace to you too. v 😀😀😀

This video was put out 3 years ago. I thought the fluid and fins offered great opportunity for thermal energy transfer. It would be nice to see an update on this idea. It's trully unique and i wish it success.

@RickRandRMarketingllc

2 ай бұрын

I guess we need to email Mike and see where he is with this prototype?

Fantastic work. Congratulations. I heard about your Stirling cycle project last weekend from Just have a think. I have been interested in Stirling cycle engines for a long time having built one in school some 45 years ago. This sounds like one of the most ingenious applications of the Stirling cycle I've come across. Good luck with your development.

@ramneetbassi3168

2 жыл бұрын

Me too. Found it after Just Have a Think.

A truly original idea, with applications far beyond the Stirling cycle, I'm sure...

mike what a job ... done by one man only for what I can see ... we are impress

As a guy in the HVAC field it’s awesome to see what I could be working on in the future.

Keep going Mike, the approach to near isothermal is the way forward for sure -- this does not violate the Carnot theorem but using the near isothermal technology you're getting pretty close to the limit.

Cool. As someone smart said: "Prototypes are easy, mass manufacturing is hard". I wish you all the success to get it into my house.

The very best of luck, Mike. You put in a lot of hard work.

the heat fins are absolutely ingenious. well done!

Thank you for all the hard work Mike I truly feel this is a great invention and would invest.

The HARS fins are quite clever, and I suspect they will have useful applications in other systems as well. Dipping them in silicone oil is another brilliant idea. Well done!

I volunteer to have a prototype installed at my house just across the pond to test this. Quality work!

I think this is awesome, I hope he brings it to market.

just have a think channel sent me here

@mrrolandlawrence

3 жыл бұрын

i was just thinking that...

it's not easy to reimagine such old technology! Congratulations on a job well done

What a genius, Michael!

I wish you the very best of luck with this - I hope it takes off!!!

A beautiful piece of technology! I really hope that it gets the necessary funds to become widely used.

All the best, and Good luck..looks really GREAT..

Awesome tech, I can't wait to heat/cool my house with a system like this.

@BMFC

3 жыл бұрын

@@user-xy7bt8qg8k nope

@jeanpaulchristian3282

3 жыл бұрын

Allah said he who made great isothermal heat pump is true son of Allah

Thank you for the video and your innovative of heat pump technology.

This is amazing. I want one!!!

Brilliant sir... just a great feat of engineering! I would like to see you completely upend the market and the grid with this. :)

Amazing tech advancement this is awesome news!

I'm currently an undergrad in mechanical engineering, and just built my first stirling engine last week. This seems like a really interesting way to improve the efficiency of the reverse stirling cycle.

This is really cool!

Great explanation Mike! Wishing you all the best of luck ✨✨✨

This is absolutely amazing and I thought about this concept and believe you could use this concept to produce a battery that can charge itself full when under full load

Very interest. Good luck with getting the technology to market.

Excellent! So your HARs are like regenerators allowing the transference of heat to the correct part of the cycle (from the compression to the expansion) morphing the Stirling cycle into a Carnot cycle on the T-s diagram.

Awesome idea. If you ever need parts prototyped, I'd be happy to donate some time. I own and operate a machine shop in Denver Colorado with 3 and 5 axis milling and turning capabilities, and I've wanted to find ways for the business to contribute to green technology. It might not be the most ideal given the distance, but if I can help at all please let me know. Best of luck moving the technology forward.

Awesome!

I also came from have a think. Having looked in to air source heat pumps last year I was very disappointed by the costs, not least the need to retrofit insulation to my Victorian semi. At the moment there is no realistic alternative to a gas boiler in the UK, but this looks like a very promising step forward. Hopefully one day one of your pumps will sit alongside my pv array and CO2 emissions for my heating and hot water will be a thing of the past. I wish you every success.

Ingenious!

thanks, I will watch this space

Excellent explanation. Liquid (fluid) piston Stirling engine is the way to go when it comes to highest possible efficient, no doubt. Keep go on with the good work.

Good luck with the project. As an employee in production and genuinely interested in its applications in waste heat recycling and steam generation not reliant on fossile fuel, I sincerely hope it takes off.

Mr. Crowley, nice work sir! Suggest having a 5 minute or so simple animation to showcase your improved Stirling Cycle. Well done sir!

Brilliant

Très bien !

I am in the construction house building world and the industry needs to transition from gas boilers to an alternative. The most likely will be heat pumps. Your system looks very interesting and for me the generation of heat is great but the generation of cooling could be very useful to cool solar PV systems that could power your system thus increasing the efficiency of the PV. One for you guys to think about.

@mrtea3372

3 жыл бұрын

'the industry needs to transition from gas boilers to an alternative.' We don't need to transition we are being forced to by corrupt politicians

@cuckingfunt9353

3 жыл бұрын

@@mrtea3372 We use gas for a reason. A gas boiler is min 24kw, often as high as 42kw... Try squeezing that down your single 6mm electrical supply cable. And they want our car outside charging on that at the same time ! .... We just replaced all the low pressure gas with high pressure lines, and now they want to do away with it. It's plane stupid.

@mixedup84

Жыл бұрын

@@cuckingfunt9353 thanks for the info funt

Hi Michael, great product I’d be installing one in or remodelling . Little suggestion, I feel that with what you have a more professional setting and slick presentation will take you to the next level. All the best. Nigel

Dear Mike - I have tried to send you a message via your website, however after 10 attempts to pass the anti bot test (typing in displayed security characters) I gave up, life is too short. This is very exciting, I came across this video after seeing it on ‘Just have a think’ YT channel. I wish you every success with this venture.

@MikeCrowley

3 жыл бұрын

thank you

@veronicathecow

3 жыл бұрын

It took me 3 attempts but I finally got through

Wow, that´s pretty smart!

Amazing

revolutionary engineering

Good luck with it , any idea what sort of applications are likely to be early adopters ?

How long untill You have a 10kw working prototype? And an estimated price?

Congrats and sorry to call you in late hours. I asked about heating the system directly with Suns heat.

You have a great idea. If you can build a system that can utilize waste energy like "hot waste water" , and help cool solar panels (preferably utilize the extra heat freom it) etc it will be truly remarkable. Looking forward to seeing the sterling heatpump you will build.

Very very interesting, thanks for the video.

Very clever! Putting the motor inside will also move the heat of the motor inside and I'm curious how will impact efficiency.

I have seen an other video stating some COP at higher temperature differences. But what is the COP at 5° to 15° or 15° to 30°?

I am really excited about your technology, Being a user of a standard heat pump in our house in Portugal, I noticed that the heatpump struggled and failed to heat the house adequately when the temperature dropped below 5c. So with the UK government saying everyone should convert to air source heat pumps, I am very sceptible of that viability, but your techology seems to hit the problem squarely. Please keep me updated, I am very interested in purchasing one of your devices when it is available

@MikeCrowley

3 жыл бұрын

Our heat pump is capable of working with much higher temperature differentials so going from an outside temperature of say -10c to a water temperature of +60c is possible. It will be a few years before one of our heat pumps is available to purchase. Currently we have a working prototype but there is still a lot of development work required to make a reliable consumer product at an affordable price.

Great video, keep up the good work. Question: How are those HARS sealed? And is that seal able to last the lifetime of the machine?

@MikeCrowley

3 жыл бұрын

There is no seal. The fluid and the gas are at the same pressure

Very interesting

Interesting idea. The last iteration of this design I saw was leaking fluid all over the place so it looks like things are improving. Mr. Crowley seems a little awkward when introducing his machine but damn does he light up and get really excited when explaining the technology behind it.

Please let us know if/when you sell shares in your company on the stock exchange. Do you intend for the first commercially available model to be used in domestic applications, industrial, or both?

@timpeterson2738

3 жыл бұрын

Yes I agree this is going to take off very fast.

nice

Hi Mike, fantastic video and brilliant idea. Could I ask if you've measured the Pressure-Volume relation over each cycle to see how close the machine approaches an ideal isothermal expansion and contraction?

@MikeCrowley

3 жыл бұрын

Yes, absolutely

@RickRandRMarketingllc

2 ай бұрын

@@MikeCrowley Are you planning to do an update Mike? After 3yrs it seems you should be near production stage? I have a system that will allow all combustion engines to out perform like never before.

Dear Mike, It was a nice demonstration video from your prototype heat pump! Congratulation for that! It was a hard work and lot of invested money I think. I have few questions. First about the 0,5 mm gap between the gas molecule and the copper surfaces. If you have 2 mm distance between the fins, how did you get the 0,5 mm gap from the gas molecules? Do you have another 0,5 mm height silicon oil layer on the fins when it's move (I think the layer height is always change when thy cycle goes)? So it looks like than a parallel plate moving heat exchanger. If the engine works with Helium on 16 bar than the gap should be around 0,29 mm in the gas channel for the hot side and around 0,23 mm on the cold side in a pretty high efficient heat exchanger. I have lot of question in my mind, but actually it is enough now. Thanks to share this fantastic protoype engine! Greetings from Hungary! BLADE

@MikeCrowley

3 жыл бұрын

Hi Blade, It is 2mm between the fins. So the midpoint is 1mm. 1mm is the maximum distance a gas molecule can be from a surface. The minimum distance is 0mm. So the mean distance is midway between 0 and 1mm. That is 0.5mm

@AttilaBlade

3 жыл бұрын

@@MikeCrowley I know what do you mean, but the flow is laminar here, and the heat exchanger's efficiency will be low because the gap is too big. The distance for a good gas-solid heat exchanger where we use parallel plates could be 2* the gas penetration depth. The ideal distance is 8 times lower than now. So, a quasi isothermal compression/decompression without a perfectly designed heat exchanger impossible. The heat exchanger is the biggest pain in the arse for every people who designed Stirling or thermoacoustic engines all around the world.

@sandorkonya

Жыл бұрын

@@AttilaBlade vicces... ahogy megláttam ezt a videót, azon gondolkoztam, hogy küldök egy linket az Attilának... és akkor jött szembe a komment =) Nekem is soknak tünik a 2mm gap.

@AttilaBlade

Жыл бұрын

@@sandorkonya Valószínűleg a folyadék közeg miatt van egy ilyen kompromisszum, mert a felületi feszültség miatt nem ürülne ki a lemezköz. De az ötlet maga nagyon eredeti!

I came for ideas on diy stirling cryopump, As a machinist its a project i think is in scope as they say. , the helicopter transfer plate, engine, a 1980's "tomorrows world" cycle engine. I like it, The world of cold is so unexplored,

The Pressure chamber is maintained at one value to allow the helium to compress and expand. so how is the oil circulated away to transfer heat while maintaining constant pressure in the chamber? I'm having trouble understanding that. The addition of fins to the piston is a genius idea! edit: I checked out the website. it is explained there, I wish you the best in leading the way on this improvement.

@MikeCrowley

3 жыл бұрын

Very good question. The oil in the heat exchanger is at the same pressure as the oil in the pressure chamber. There is a system not fully explained in the videos that moves the oil in and out of the bottom of the cylinders. The oil pressure in the cylinders does change but the oil circulated in the external heat exchanger is at constant pressure. I would probably have to do another video to explain this.

@RickRandRMarketingllc

2 ай бұрын

@@MikeCrowley are you planning on doing another video?

could that tech be used in a small stirling generator? would love to see one powered by a wood stove

Having watched this video, I better understand the engineering of this approach. I think this has real potential to revolutionize refrigeration, but there is a sticking point: you're using helium as your working fluid. Helium is a very small atom that slips through small cracks easily. Combine that with the use of moving seals, and I can see leaks being a real problem. Then you have to take into acount that helium is a very expensive gas. These are commercial implementation issues that I see. If you've already addressed these issues, then forgive me for stating the obvious and just ignore me. I look forward to seeing how this project evolves. Good luck!

This is great. I would be interested in how those fins would work in a regular Stirling cycle.

@klausbrinck2137

3 жыл бұрын

I hope too to find something out...

@MikeCrowley

3 жыл бұрын

Christian, The fins are a new invention there are no fins in a regular Stirling cycle

@klausbrinck2137

3 жыл бұрын

@@MikeCrowley Well, that´s the question here: Would the application of fins (in such a way) bring any development for stirling engines too???

@charliepearce8767

3 жыл бұрын

@@MikeCrowley What about the passage between the hot and cold pistons in some old "Rider Ericsson" hot air engines...they had a group of regeneration plates set closely together at the top of the engine so heat/cooling gas wasn't wasted... Some newer models use copper wool instead im thinking...

@anthonyruiz2240

3 жыл бұрын

they seem to me to be here just for transfer the heat beetween the piston and the fluid

I have always believed that using electronic controlled voice coil type actuators would allow you to optimise the cycle rather than mechanical actuators. Most losses would be in the wobble plate you use, adding a bit of AI would be able to continuously optimise the cycle and allow the unit to run at a variety of frequencies without loss of efficiency.

Do you have any more recent updates? What are your projections for commercial availability?

Very interesting. If you can get the coefficient of performance high enough would it be possible to use the extra heat to produce energy needed to run the heat pump. Say a closed system where you have for example ammonia or hydrogen stored in a hydride and run the gas produced by heating one tank (the source) through a pneumatic engine (Angelo de Pietro's compressed air engine for example) and storing the exhaust gas in another hydride storage tank (the sink)? Maybe three tanks for cycling continuously.

Any prediction when will it hit the market? Edit: gramar

Can You though this in Reverse and achieve similar efficiencies in terms of Energy production?

Mike, great work, can’t wait to get my hands on one. What kind of motor will you be using in the final product? Are you looking at synchronous or switched reluctance motors at all to hopefully yield even greater efficiency?

@MikeCrowley

3 жыл бұрын

There is quite a lot of choice when it comes to motors and different applications and sizes will benefit from different motor types. Ultimately is comes down to a choice based on efficiency, machine size, cost and reliability

@chefwindquest1048

3 жыл бұрын

@@MikeCrowley if cost wasn’t a factor and you were shooting for maximum efficiency, is there one you would favour?

@chefwindquest1048

3 жыл бұрын

And when can we expect the next video update?

@gregorymalchuk272

3 жыл бұрын

@@MikeCrowley What is the cooling COP, and have you tried heating and cooling it and observing its output when motoring under its own power?

@jeffjefferson3364

2 жыл бұрын

@@gregorymalchuk272 see this is what's getting me about this, it's supposed to have a COP of between 3 and 5ish depending on temperature differences. If even a regular stirling engine works at 40% thermal efficiency, then this machine can self power at least and produce excess power of 100% of the stirling engine possibly. It's not possible probably or I'm misunderstanding what I'm being told. Or why isn't this an exciting breakthrough in energy production?

Wow I swear I've been thinking about a very, very similar idea for Stirling cycle for years. Too bad I've been to busy to make it real, I hope for you it really works. During my work on my own project I was concerned about piston instabilities due to oil/fins interactions and about the fact that the increased weight and drag caused by fins in oil would make the piston way harder to move. Did you observed such phenomenon ?

What percentage of the helium leaks out over a 24 hr period?

I don't understand, since it's a piston, isn't the cooling and heating happened at the same place, just different time? how did you set the heat to move just from one place to the other?

Hello Mike, I need your help. Could you help me, please?

Amazing work sir how one day air conditioners made by your tech will be on sale in shopping complexes 👍

a great future using heat pipe heating gas

Hi Mike, it took 3 attempts to get the contact form to send on your website.

would it be possible to reduce or eliminate the electrical energy input by recycling the heat you pull out of your cooled environment with a sterling engine? if so what sort of scale would it need to be done at to make the added cost worth it by comparison to the energy costs?

@MikeCrowley

3 жыл бұрын

No its not possible. If you tried this you would end up putting more power into the first stage and so have a less efficient machine.

@coorbin

3 жыл бұрын

You couldn't eliminate the energy input; physics requires you to always spend more energy than the work you get out, and even a plain 100% efficiency is impossible in the real world. This is a practical device that demonstrably improves efficiency to get us significantly closer to the limits of thermodynamics. Since a heat pump is literally moving heat from one place to another, that work has to be done at a net energy loss, so you need energy input. There are rapidly diminishing returns, which is why a second system recycling the waste heat rarely helps when dealing with heat engines. Industrial scale power plants are able to recycle their waste heat due to their large scale and high operating temperatures. Once the waste heat gets down to a low enough level that it's warmer than outside air, but not dangerously hot, it can be pumped to buildings to heat them in cold weather, or used to heat up water for hot water supply. So in industrial thermal power plants you do see a lot of waste heat reuse. At the scale of consumer A/C units, I would not expect it to be practical to do this.

@jordanwanberg753

3 жыл бұрын

Im not asking about creating heat. Im asking about moving and concentrating heat. All commercially avaliable heat pump systems the move heat at an electricity input to heat output ratio better than 1 to 1. With some at rates of 1 to 6 or higher. So if this system capable of the same sort of heat pumping as those then there is plenty of energy to be harvested. Im wondering if the heat gradient would allow a sterling engine to run efficiently enough to offset the energy costs. Unless this is a totally different type of heat pump

*AN ENGLISH MAN IN HIS SHED* with a new invention - how life should be....

@abetyoga1080

3 жыл бұрын

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@abetyoga1080

3 жыл бұрын

ppp

@abetyoga1080

3 жыл бұрын

pppp

@abetyoga1080

3 жыл бұрын

ppppp

@abetyoga1080

3 жыл бұрын

pp

I'm confused. The 'stirling' part is the compressor? So the 'HARS' are always going to be getting hotter, or always getting colder? ( hotter unless it's working as a generator) This isn't like a regenerator where it cycles rapidly from hot to cold. Or am I missing something??? Edit: Ok after watching the linked video. The Silicon oil is acting as a heat transport medium, there aren't any refrigerants in the system. So the HARs do double duty in transferring the heat to the oil. Although this point contradicts what this video says. The increased efficiency does increase the COP.

So what is your working gas? Helium? Nitrogen?

Is there a product for sale? What progress has been made since 2 years ago?

@Brammist

11 ай бұрын

I have the same question, better heatpumps would have a huge impact

Lookup heatpipe they are used for cpu cooling

Absolutely brilliant to see that we still have mad scientist/engineers out there making complex, sophisticated contraptions trying to improve our world! I have just now come from watching a new video from Just Have A Think (kzread.info/dash/bejne/imWay6N7lZfeYJs.html) about your tech and whilst I have not fully understood the process as yet, this has definitely made me curious about this system and will be looking out for it in the future. Good luck with everything and looking forward to seeing more videos as you progress with it!

heat pumps are big, getting biglier, as is this timely biggliest refinement. Slashing RE and battery storage costs at this crucial juncture, just before the world massively implements heat pumps.

For equal performance throughout the year, this great machine should be paired with a geothermal source....

i whant this for my futur house

What's the best wattage and efficiency you can get for generating work from heat? Example: Heat source= 60-130 deg C (water, and variable amounts of CO2 ) , Cold=4 to minus 20 deg C (Wind-chill/CO2/Di-Methyl-Ether).

@PasajeroDelToro

2 жыл бұрын

1-((273-20)/(273+130))~37.2% Quite a diiference, depending on whose equation you trust. I think the more pragmatic equation is the one with the square root.

@PasajeroDelToro

2 жыл бұрын

There's a Reddit post under "AskEnginners". The title is: "Could a geothermal Stirling engine electricity generation like this work?" I made some comments there. Might interest you. Also, on Reserachgate, there is an post "What is the maximum efficiency of a stirling engine?" by Krishna kanth Mundada, Indian Institute of Technology Hyderabad. In the comments is an answer to his question. It cites the equation: Efficiency = 1-sqrt(Tc/Th), instead of the usual Carnot Efficiency 1-(Tc/Th), and also states that Carnot's model was unrealistic. Any thoughts on this? Which equation is best, or is there an even better one?

Great video, sir I need an explanation about how to download and install simulation x (works 100% in 2021), please sir make a video about this. Thank you sir.

What is the COP?!?!!?

Can you make it into a heat engine to scavenge weak heat sources?

Well done Michael this is novel. Im an engineer myself and would love to have the opportunity to trial, critique and aid further development of your system. I currently design MRI machines for a global leader.

@ahmdabdallah5811

2 жыл бұрын

What Is Islam? Islam is not just another religion. It is the same message preached by Moses, Jesus and Abraham. Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. It reminds us that since God created us, no one should be worshipped except God alone. It also teaches that God is nothing like a human being or like anything that we can imagine. The concept of God is summarized in the Quran as: { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4) Becoming a Muslim is not turning your back to Jesus. Rather it’s going back to the original teachings of Jesus and obeying him

With a growing shortage of helium have you investigated other gasses. What is the safety factor of using something like hydrogen instead?

@zekefishy2343

3 жыл бұрын

Hydrogen has similar low friction and ability to flow / carry heat. Though it is not noble and the containment vessel would need to be designed accordingly. The issue as I see it is that due to helium being light and non reactive it escapes the atmosphere and is predicted to lead to a shortage crisis in the next 30 years. Using it in a heat pump would be wasteful. Hydrogen is more difficult to contain and more reactive but the advantage is that its easier to obtain and leaked helium is significantly more likely to react and bond to other elements like oxygen in the atmosphere before leaving.

@MikeCrowley

3 жыл бұрын

The machine works equally well with helium or hydrogen. The mass or volume of gas used in each machine is very low, so the flammability risks of using hydrogen are much lower than say the risk of using a gas cooker in your home. The main risk with hydrogen is during manufacture, if you have a lot of machines to fill with hydrogen gas then there are health and safety risks, but this can be controlled with good working processes and ventilation. Ultimately helium is a gas with a limited supply so in the long term (30 years +) hydrogen will be used.

great, if you got a problem on your futur heat pump you can go see you mechanic for cheap repair

Great invention. Let's hope the money can be found to finance & develop it in the UK. Far too many UK inventions get sold / licenced abroad, and profits exported, because our banks won't finance UK inventions. We recently sold the crown jewels of the UK computing industry, ARM to the Japanese. Because UK banks wouldn't finance it. It's a disgrace...

Commercially Helium would be a poor choice as it is a limited resource and non recoverable as it is lost to the upper atmosphere when released. Are there other gases that could safely be used?

@asystentnet

3 жыл бұрын

It's could be H2

@MikeCrowley

3 жыл бұрын

Mike Crowley • 1 second ago The machine works equally well with helium or hydrogen. The mass or volume of gas used in each machine is very low, so the flammability risks of using hydrogen are much lower than say the risk of using a gas cooker in your home. The main risk with hydrogen is during manufacture, if you have a lot of machines to fill with hydrogen gas then there are health and safety risks, but this can be controlled with good working processes and ventilation

@nowhere64967

3 жыл бұрын

(not flamable Helium and Neon)and Hydrogen are the 3 to date known gases who eat when expand ,a mix of two or the three is probably a good choice to test and observe chemistry.stackexchange.com/questions/61517/reason-for-negative-joule-thomson-coefficient-of-helium-and-hydrogen-at-ntp-cond

i just say something nice for the algorithm.