400 CFM per Ton
400 CFM per Ton
(OP)
A rule of thumb in air conditioning work is that 400 cfm of air is equal to 1 ton. If 400 cfm of air and a delta T of 20 degrees is achieved, this is equal to only 400X20X1.08=8640 btu/h.. This is not 12000 btu's. What am I missing here besides a college education.





RE: 400 CFM per Ton
RE: 400 CFM per Ton
Q = 4.5 x cfm x Delta h
to get total heat
HVAC68
RE: 400 CFM per Ton
Thank you, this really helps.
RE: 400 CFM per Ton
HVAC68
RE: 400 CFM per Ton
The factor 1.08 reflects only sensible heat and is the product of
which when multiplied by X CFM results in
RE: 400 CFM per Ton
Hileg
RE: 400 CFM per Ton
A small correction to my last paragraph, it should say: when multiplied by X (CFM) * ΔT (oF) results in