CFM = 1TON ?

[steve638]

How many CFM's of air equal one ton of refrigeration?

[chillerguy81]

That all depends on how the system is engineered. Engineers normally figure 350 - 400 cfm per ton.

[LocoMike]

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.

[brooklyntech]

250-400-600 cfm- different variables require different cfms

[Mikeymoe]

what is the basis of your question? all posters are correct, but it depends on type of system, static pressure, etc.

[makinmoney]

Liebert CRAC systems go about 700 cfm's per ton......it depends on the application and the Manfacturer's engineering of the system.

[Serviceyourac]

Yeah, there is no real "direct" answer for this question. There are only rules of thumb for estimations.

[flange]

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.