Heat pump data – cold day

Published January 18, 2012 by Sean

Temperature logged on one of my radiators. Outdoor temperature 1 degree above freezing.

4.5Kw ASHP, Whole house consumption over 24 hours 31kWh.

Flow setpoint 38, Flow 40/return 31

Outside temp 1 degree

(click for larger image)

Looks like 15 compressor starts in a 15 hour period. This is a radiator system with no buffer tank (but bypass fed to lower coil in a 150l DHW tank).


Filed under Heating

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