In my attempt to simulate a simple heating system including the type
997 “ground heat exchanger” and the type 137 “fan coil unit”,
I encountered some problems which I will explain below.
* The ground heat exchanger didn’t seem to have any effect on the
water’s temperature (inlet and outlet temps where plotted and found
equal). The water exits the fan coil then enters the exchanger to
reject or gain heat and then re-enters the coil to condition the air
flowing through the coils. Shouldn’t I see some temperature change
in that cycle of the water?