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[TRNSYS-users] Type 534 - losses from gas flue

Dear colleagues,

I am using Type 534 for simulation of  a solar DHW system with heat pump. As I set up 2 heat exchangers, one for solar collector loop and one for heat pump loop, I do not set up other auxiliary heat input, so my "Auxiliary heat rate" will be 0. My question is:  why is the system calculating the gas flue losses only when there is no auxiliary? I think I do not have in my case any flue losses. Am I wrong? Is this calculation avoided if I am setting the Overall flue heat loss coefficient to 0?

Thank you,

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Emilia VISEK
PhD student|Politecnico di Milano-Energy Department|Via Lambruschini 4,20156,Milano,Italy|Ph:+39022399 3895|emilia.podar@mail.polimi.it