Just to add more detail here - above is the ground loop stable temperature after a few hours circulation with no GSHP operation (menu 5.11 to switch the pump between modes). I have distinguished years using colour but the plot against month looks right - with years showing no consistent trend. So the temperature in May after a winter's heating is about 8.5C, recovering to about 10C over the summer (it is obviously tricky to do this measurement in winter when the pump is operating). For what a curve looks like see the previous post, but it is clear empirically that the ground temperature recovers OK, though the known conductivity suggests that this must be due to heat transfer by ground water movement.
No comments:
Post a Comment