[TRNSYS-users] Radiator Heating in a multi zone

[David Bradley]

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
>
>
>       
>
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Thermal Energy System Specialists (TESS), LLC 
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