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22-08-2013, 09:19 PM #1
Air Infiltration Question and help!
I have a problem calculating the effects air infiltration has on a refrigeration system.
I have 3 rooms at different temperatures all separated by a rough 7'X10' warehouse doors that are open approximately 90% of the time.. let's say 100% just for ease of calculation.
One of the room is exposed to Outside Air Temperature, the doors are closed, but have small cracks roughly 18in^2 to 36in^2 on average.
OAT = 110F
Room1 = 55F (door closed 100% with leak area ~ 18in^2 - 36in^2)
Room2 = 40F (door open 100 % with door area roughly 70ft^2)
ROom3 = 30F (door open 100% with door area roughly 70ft^2)
My question is how do I find the effect it has on the refrigeration system with all the leaks?
How do I represent this into more of a $ and kWh savings?
I know Q=U*A*dT and using the standard air infiltration equation...but i'm still at a lost.
Anyone know any good equations or calcs to use and how to approach a problem like this?