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Thread: CFM = 1TON ?
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01-26-2010, 12:24 PM #1
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CFM = 1TON ?
How many CFM's of air equal one ton of refrigeration?
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01-26-2010, 12:53 PM #2
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That all depends on how the system is engineered. Engineers normally figure 350 - 400 cfm per ton.
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01-27-2010, 10:00 AM #3
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The answer will vary depending on application. Rule of thumb is 400 CFM/Ton for a residential unit or unti with very little outdoor air.
Rule of thumb for 100% outdoor air is 250 CFM/Ton.
Big difference.
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01-27-2010, 10:42 AM #4
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250-400-600 cfm- different variables require different cfms
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01-24-2011, 09:35 AM #5
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what is the basis of your question? all posters are correct, but it depends on type of system, static pressure, etc.
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01-24-2011, 10:22 AM #6
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Liebert CRAC systems go about 700 cfm's per ton......it depends on the application and the Manfacturer's engineering of the system.
I love to Cook...HVAC is a hobby that pays the bills!
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01-24-2011, 10:39 AM #7
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Yeah, there is no real "direct" answer for this question. There are only rules of thumb for estimations.
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01-24-2011, 03:16 PM #8
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btuh=1.08xcfmxdelta t
12000=1.08x400x27.78
1 ton=1.08x desired airflowx desired delta t
This is for illustration only, and does not reflect actual calculations since it does not compensate for both latent and sensible loads.
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