The Homemade Heat Pump Manifesto

[AC_Hacker]

Originally Posted by mejunkhound

made a tube in tube water to R22 exchanger

36mm inside diameter PVC plastic pipe carries water

Inside the PVC pipe have 18 mm diameter coper pipe with R22 inside.

25 meters length = 60,000 BTU/hr ( 17 kW)

for your 18,000 btu, 10 meters of tube in tube water to R22 is good for the evaporator.

my use is heat pump only, water to air, the tube in tube described may not work as well as condenser.

Very good info. Scalable, too.

-AC

[Ghihi33]

Hey are you still in Portland? I stumbled on this thread while researching how to construct a heat pump to serve my bitcoin miners. I'm in Beaverton. Would enjoy discussing with someone knowledgeable.

[AC_Hacker]

Originally Posted by Ghihi33

Hey are you still in Portland? I stumbled on this thread while researching how to construct a heat pump to serve my bitcoin miners. I'm in Beaverton. Would enjoy discussing with someone knowledgeable.

Yes, still here.

What do you have cooking??

-AC

[AC_Hacker]

I want to take a moment to recognize that the Homemade Heat Pump Manifesto has gone beyond 2 million page views. I would like to thank Daox and any other people who may have worked behind the scene to make it possible.
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My initial goal was to make available the knowledge and possibility that anybody with a few tools and gumption could convert discarded air conditioners, and dehumidifiers into very high efficiency heat sources, or cooling sources. Through the years, we have received reports of success from many people, living in many states, and countries.

Another goal was to make zero money from this project, to give it away and to encourage others to take it, share it, sell it.

In the beginning I thought that maybe 200 people would find this interesting. Obviously, I was wrong, gloriously wrong.