Thermostat controlled fans

[samwicks]

Hi,

There's currently the ability to enable/disable fans based on a temperature reading. Would it be possible to impliment further control? Ideally, a fan curve could be specified with the RPM thermostat controlled, or a volume flow rate boundary condition could vary with temperature. Essentially, the same thermostat options for heat output boundary conditions, but applied to flow rate BCs or fans.

Does anyone know any way of modelling such behaviour currently?

[marco.mueller · Accepted solution]

So far I think there is no possibility to model exactly what you describe. Maybe it helps to find a solution if you describe what your goal is. One question I have is: if you specify a temperature dependent flow rate boundardy condition, you must also define (know) a temperature for this boundary, since this cannot be part of the solution. So why not specify the flow rate directly?

Or is your question only meant for internal fans?

[samwicks]

Thanks marco,

It's specifically for internal fans.

[derrek.cooper]

Sounds like youbare trying to model a heat exchanger? Where you know the flow rate and the heat removal "rate" based on the incoming temperature? If so, let's talk offline..