Feargal,Typically what we do is to model the radiators and boiler system outside of Type56, having a thermostat model watching the zone temperatures and then add back the energy of the radiator system to the zone in whatever way is appropriate. I would probably define an additional gain that is some split between convective gain and radiative gain (because in reality radiators actually provide quite a significant fraction of their energy connectively to the zone). The division between the four zones has to be determined by how the system is plumbed (perhaps the radiators are in series, perhaps they are in parallel but have different lengths of supply and return piping, perhaps they are sized differently)
Kind regards, David Feargal Murray wrote:
Hi all I'm very new to TRNSYS, and trying hard to model a 2 storey domestic dwelling. I have used 2 zones upstairs & 2 zones downstairs, 1 of each north facing and south facing. My first question is - how do I model an oil fired burner connected to radiators for Central heating & DHW? The power output of the burner is 17kW approx. Should I model it through the heating tab in Type 56? if so, how do I divide it up between the 4 zones and the radiators? The burner is located in the 1st zone. Thanks for reading Feargal_______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
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