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