ClueLuma

Air total heat rate calculator

Total air heat includes moisture effects through enthalpy; the coefficient assumes standard air density.

Units
qtotal=4.5×CFM×Δhq_{\text{total}} = 4.5 \times \mathrm{CFM} \times \Delta h

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

cfm
Btu/lb
Btu/h

Worked example

Given

  • CFM\mathrm{CFM} = 6,200 cfm
  • Δh\Delta h = 5.8 Btu/lb
qtotal=4.5×6200×5.8=161,820q_{\text{total}} = 4.5 \times 6200 \times 5.8 = 161{,}820

Symbols and units

SymbolMeaningUnit
qtotalq_{\text{total}}total air heat rateBtu/h
CFM\mathrm{CFM}air volume flowcfm
Δh\Delta hair enthalpy changeBtu/lb

Related calculators

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.