[TRNSYS-users] Piping thermal capacitance

[Marco Scarpellino <marco.scarpellino@gmail.com>]

Dear all,

I am trying to simulate with TRNSYS a solar cooling system.
I am not able to simulate the thermal capacitance of the piping of the plant. I try to explain better what I mean: in the early morning, in the real condition, the pipe has a temperature equal to the ambient temperature, because of the stop of the plant during nighttime and the consequent temperature decrease. When the pump starts to run and the panels begin to work the temperature of the piping rises until it reaches the fluid working temperature. The energy that we produce with the solar thermal panels in the meantime is used to raise the temperature of the whole piping. How I can take into account this loss of energy?

I am at your disposal for any clarification you may need.

Thanks in advance for your help.

Best Regards,

Marco Scarpellino