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samwicks
Posts: 23
Registered: ‎08-31-2011
Accepted Solution

Thermostat controlled fans

379 Views, 3 Replies
10-07-2011 02:25 AM

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?

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marco.mueller
Posts: 35
Registered: ‎08-30-2011

Re: Thermostat controlled fans

10-10-2011 02:09 AM in reply to: samwicks

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?



Marco Müller
Product Support Specialist
Digital Simulation
Autodesk, Inc.
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Contributor
samwicks
Posts: 23
Registered: ‎08-31-2011

Re: Thermostat controlled fans

10-10-2011 02:13 AM in reply to: marco.mueller

Thanks marco,

It's specifically for internal fans.

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Employee
derrek.cooper
Posts: 65
Registered: ‎04-06-2011

Re: Thermostat controlled fans

10-10-2011 06:59 AM in reply to: samwicks
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..
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