● The qualitative framing of the results summary #1 met expectations (i.e., "Calculations show 2” is too close and returns diminish beyond 8”"). ● Assumed ground temperature profile (and rational) is not clear (i.e., "· Ground level temp is 74.44°F" & "· Temp drops linearly from ground level to full depth") ● "3D Scatter Plot of …" is nice, but variable of interest was in terms of % of total heat transfer vs. S (tube spacing - center-to-center) and not Water Temp (°F). ● The heat exchange (i.e., the thermal short circuiting) from the "inlet flow" tube to the "outlet flow' tube is somewhat like a counter-flow heat exchanger. It is not clear that this can be modeled in the context of a single cylindrical coordinate system.