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Heat Recovery Calculator

Sensible Heat Recovery

The calculator below can be used to calculate the sensible heat recovery where the air flow, outside and inside temperature and recovery efficiency are known.

air flow (cfm)
t1 (oF)
t2 (oF)
recovery efficiency

t1 - outside air temperature before the heat exchanger
t 2 - outside air temperature after the heat exchanger

Total Heat Recovery

The calculator below can be used to calculate total (latent and sensible) heat recovery where the air flow, enthalpy of outside and inside air and the recovery efficiency are known.

air flow (cfm)
h2 (Btu/lb)
h1 (Btu/lb)
recovery unit efficiency

h2 - enthalpy outside air before the heat recovery unit (Btu/lb)
h 1 - enthalpy outside air after the heat recovery unit (Btu/lb)

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