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Zone Exhaust Fan Motor Heat

asked 2015-12-03 15:25:22 -0500

SVVitale gravatar image

updated 2015-12-03 15:39:06 -0500

Does anyone know if the motor heat for a Fan:ZoneExhaust goes directly into the zone, into the exhaust airstream, or if it is a throw-away load used only for electrical loading? It seems like there should be a way to dictate where the motor heat should go. I am hoping that it is NOT getting added into my zones as a cooling load because in reality my exhaust fans are outside the building on the roof and the motor is outside the exhaust airstream too so I would not want that motor heat to warm up my exhaust air either in the model since I want to accurately model heat recovery.

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answered 2015-12-03 16:31:43 -0500

Chris Jones gravatar image

From the Engineering Reference: "The exhaust fan model is similar to, but simpler than, the models used for air system fans. The electric power calculation is simplified and uses a constant overall efficiency. All of the fan power is added to the air stream."

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As a program enhancement, it would be nice if there was a field or two to specify where the heat should go.

SVVitale gravatar image SVVitale  ( 2015-12-03 18:24:11 -0500 )edit

Suggest it here

aparker gravatar image aparker  ( 2015-12-03 18:25:33 -0500 )edit

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Asked: 2015-12-03 15:25:22 -0500

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Last updated: Dec 03 '15