HVAC exhaust air temperature?

• Jul 5, 2016

• #2

Ziggypump

Mechanical

Apr 2, 2010

138

US

HVAC exhaust? Like toilet room air, or relief air? Either way I would assume the exhaust would be dependent upon the room air being exhausted. If the room is set to 21C then I would not assume 70C exhaust air.

 

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• Jul 5, 2016

• Thread starter
• #3

cdwarmann

Chemical

Jun 26, 2016

4

TH

From an exhaust vent on the roof?

 

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• Jul 5, 2016

• #4

willard3

Mechanical

Jan 14, 2006

1,437

US

There is no general rule here, you will have to measure it.

 

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• Jul 5, 2016

• #5

cdxx139

Mechanical

Sep 19, 2009

393

US

Exhaust air should be equivalent or slightly higher than your room setpoint.

knowledge is power

 

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• Aug 6, 2016

• #6

itsmoked

Electrical

Feb 18, 2005

19,114

US

Or are you referring to the refrigeration condenser exhaust temperature?

Keith Cress
kcress -

http://www.flaminsystems.com

 

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• Aug 6, 2016

• #7

lilliput1

Mechanical

May 1, 2003

1,054

US

Exhaust would be the amount of exhaust from all the toilets connected to the exhaust system. Temperature would be the temperature resulting from the mix of toilet exhaust from rooms with AC on (occupied rooms) and that from unoccupied rooms (say 80 to 85 F) and if you want the temperature of exhaust at fan discharge, add fan heat (fan only or including motor heat if motor is within airstream). You can measure by taking velocity traverse readings on sectional areas of the discharge opening and averaging corresponding traverse temperature measurements. You can have a certified air balancing contractor perform this.Why do you need this information?

 

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