Sensible Heat Ratio - SHR

Sensible Heat Ratio - SHR - is defined as the sensible heat or cooling load divided by the total heat or cooling load

The Sensible Heat Ratio - SHR - express the ratio between the sensible heat load and the total heat load and can be expressed as:

SHR = q_s / q_t         (1)

where

SHR = sensible heat ratio (ratio of sensible heat load to total heat load)

q_s = sensible heat (kW, Btu/hr)

q_t = total heat - sensible heat and latent heat (kW, Btu/hr)

(1) can be modified to:

SHR = c_p (t_o - t_i) / (h_o - h_i)         (2)

where

c_p = specific heat capacity of air (kJ/kg^oC, Btu/lb^oF)

t_o = outlet temperature (^oC, ^oF)

t_i = inlet temperature (^oC, ^oF)

h_o = outlet enthalpy (kJ/kg, Btu/lb)

h_i = inlet enthalpy (kJ/kg, Btu/lb)

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