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the difference between **Fan Coil Total Cooling Rate** and **Cooling Coil Total Cooling Rate**?

asked 2017-08-21 01:10:31 -0500

Richard gravatar image

updated 2017-08-21 08:38:39 -0500

What is the difference between Fan Coil Total Cooling Rate and Cooling Coil Total Cooling Rate? I put ZoneHVAC:FourPipeFanCoil in a zone,and i found huge difference between Fan Coil Total Cooling Rate and Cooling Coil Total Cooling Rate, the Cooling Coil Total Cooling Rate is much larger than Fan Coil Total Cooling Rate, why?

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answered 2017-08-21 08:33:35 -0500

Because of outdoor air. The Fan Coil Total Cooling Rate is what is provided to the zone (i.e., Tsa - Tzone). The Cooling Coil Total Cooling Rate is the total load on the system coil including fan heat and outdoor air load (i.e., Tcoil, outlet - Tcoil, inlet).

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answered 2017-08-21 19:47:43 -0500

Richard gravatar image

updated 2017-08-22 19:06:13 -0500

Another description for this topic:

The Fan Coil Total Cooling Rate is about the condition between R.A. and S.A.

The Cooling Coil Total Cooling Rate is about the condition between M.A.(R.A.+O.A.) and S.A. (including fan heat)

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M.A. also includes outdoor air load if OA is part of the simulation.

rraustad gravatar image rraustad  ( 2017-08-22 07:38:31 -0500 )edit

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Asked: 2017-08-21 01:10:31 -0500

Seen: 984 times

Last updated: Aug 22 '17