Coincident heating and cooling

4 posts / 0 new
Last post

Dear All,

What are reasons for occurrence of "coincident heating and cooling
hours" in the model SS-C and SS-E reports. What should be it's idle
value? What has to be done in order to eliminate it?

Regards,

Ganesh,

R Ganesh's picture
Offline
Joined: 2011-09-30
Reputation: 0

You must have an HVAC system that CAN perform coincident heating and cooling loads, such as a reheat system. You can minimize it by raisng the cooling set point for that type of system.

John Aulbach's picture
Offline
Joined: 2011-09-30
Reputation: 1

Does the economizer (based on temperature control) work with a DD-DF system in equest. Comparison between fixed and OA-temp economizer options do not show any change in energy consumption.

Thanks

-Rohini

Brahme, Rohini            UTRC's picture
Joined: 2011-09-30
Reputation: 0

Rohini:
?
Doesn't an economizer on a real world double duct system throw air down BOTH ducts, saving cooling but increasing heating?

John Aulbach's picture
Offline
Joined: 2011-09-30
Reputation: 1