<p dir="ltr">dear sirs,<br>
i'am using the type 668 (water to water heat pump ) in trnsys16<br>
coupled with horizontal ground heat exchange type556 for heating a<br>
storage tank,when i'm using 1-minute time step and I'm increasing<br>
pump flow rates The temperature of the outlet load is set,but I have<br>
a problem with the temperature of outlet source . I do not know where<br>
is the problem exactly<br>
please find the attached program in trnsys<br>
thanks</p>