View Single Post
Old 03-08-14, 01:18 PM   #30
dhaslam
Lurking Renovator
 
Join Date: Oct 2012
Location: Co Tipperary, Ireland
Posts: 21
Thanks: 0
Thanked 11 Times in 11 Posts
Default

Quote:
Originally Posted by buffalobillpatrick View Post
I don't know enough about heat pumps to know what they are capible of, or what is reasonable for Eff.

Could I input solar tank water in the entire range of 35* up to 180*
and
output water that is very hot, say 200* down to 150* ?

BBP
The usual input temperature limit for a GSHP is 20C/68F The one I have only allows 15C maximum. The problem is that the compressor can overheat, it needs the cool water input to keep it cooled.

I mix the return water from the heat pump with the water from the seasonal store in a small 100 litre buffer tank. I suppose in time there will be heat pumps made specially to be used with warmer inputs.
dhaslam is offline   Reply With Quote
The Following User Says Thank You to dhaslam For This Useful Post:
buffalobillpatrick (03-08-14)