[TRNSYS-users] problem with the source flow rate type 668

[Eva gklezakou]

Dear Sirs,

I model a water to a water heat pump with U-vertical boreholes when the
U-vertical has an inlet flow rate 0 the simulation run properly but when I
change this parameter in order to make it more realistic and to calculate
the heat exchange, the simulation does not run and I get the following
 message 'A negative flow rate was encountered'. I also examine the case
just to add a pump in order to supply the desired source flow rate without
having U-vertical and I get again the above fatal error.
If anyone have any tip regarding the calculation of this parameter it will
be very helpful for me.
Thank you.


Regards,
Eva
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