Help design my new system please

[dhaslam]

Originally Posted by buffalobillpatrick

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.