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Cooling formula needed
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Posted by: Ryxz

10/28/2006, 11:38:16

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hello folks,

our company is putting up a multidrive system in a room with airconditioners to bring down the heat generated by the system of about 26kw.

i'm looking for a formula how much airconditioning horsepower we would need.

thank you for any help.








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: Cooling formula needed Smile
: Cooling formula needed -- Ryxz Post Reply Top of thread Forum
Posted by: mukund400

05/10/2008, 15:50:35

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SELECTION OF AC DEPENDS ON FOLLOWING CRITERIA
1.AREA OF THE ROOM
2.HEAT GENERATING APPLIANCES IN THAT ROOM.
3.NO OF PERSON GOING TO OCCUPY THAT ROOM.

GENERALLY-1.O TONN IS USED IN 100 SQFT AREA.

NOW I TAKE YOUR QUEST.
I ASSUME HERE THAT YOUR ROOM AREA IS 150 SQFT WITH CEILING HEIGTH OF 12 FTS.
ALSO U SAID THAT HEAT OF 26 KW WILL BE GENEARATE BY UR SYSTEM.

THAN BTU=0.7XWATTSX3.5 (0.7 IS TAKEN BECOZ 26 KW WILL NOT BE
FULLY CONVERTED TO HEAT SO I TAKE 70%)

SO BTU=0.7X26000X3.5=63700

ALSO IF THERE ARE 6 PERSON THAN
BTU=6X350=2100

AS AREA IS 150 SQFT THE NUMBER OF BTU REQ IS=18000 BTU(1.5 TONN)

SO TOTAL BTU=63700+2100+18000=83800


NOW TOTAL TONN=BTU/12000=83800/12000=6.9 TONN

NOW HP=0.8TON
=0.8X6.9
=5.5

THIS IS THE ANSWER.I HOPE U HAVE UNDERSTOOD.FOR ANY QUERIES FEEL FREE TO CONTACT








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: Cooling formula needed -- Ryxz Post Reply Top of thread Forum
Posted by: zekeman

10/29/2006, 21:30:34

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3,413BTU/hr=1KW
Number of tons of AC=heat generated in BTU/12000.
So for 26 KW
# tons=26*3,413/12000







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Posted by: mukund400

05/11/2008, 08:11:56

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how can u directly take the kw required to power up your drive machine as heat load.?

some work is done and the rest is decipated as heat to the room.








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