<html><head></head><body><div class="yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:16px;"><div dir="ltr" data-setdir="false"><div><div>Dear TRNSYS users,</div><div><br></div><div>I'm trying to model a ground source heat pump system used to heat a building.</div><div>My GSHP consists of: a heat pump (type 927), a vertical U tube ground heat exchanger (type 557), a storage tank with 2 inlets and 2 outlets and no auxiliary heating elements(type 60c) and fan coils(type 928)</div><div>I noticed greater air temperature in the rooms after connecting the HP with the building ( so the system is working, I have significant heat transfer rates on both sides of the HP and a COP of 2.5) but a have problems with load temperatures of the HP. </div><div dir="ltr" data-setdir="false">I don't understand why the load temperature at the inlet/outlet of the HP is about 100oC/105oC. My real GSHP must provide water with 65 oC (in this case the return water temperature must be 58oC).</div><div><br></div><div>Please tell me how I can get this temperature of 65oC. </div></div><div><br></div><div dir="ltr" data-setdir="false">Thank you,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Gabriela</div><br></div></div></body></html>