Sensible heat factor is given by (where SHR = Sensible Heat Ratio and LHR = Latent Heat Ratio)

Answer: Option A

Sensible Heat Ratio (SHR) - is used to describe the ratio of sensible heat load to total heat load and can be expressed as:
$$\begin{array}{rl}& \text{SHR}=\frac{{\text{q}}_{\text{s}}}{{\text{q}}_{\text{t}}}\\ & =\frac{{\text{q}}_{\text{s}}}{{\text{q}}_{\text{s}}+{\text{q}}_l}......\left(\text{1}\right)\end{array}$$
where,
SHR = sensible heat ratio (ratio of sensible heat load to total heat load)
$${\text{q}}_{\text{s}}$$ = sensible heat load (kW, Btu/hr)
$${\text{q}}_{\text{t}}$$ = total heat load - sensible heat and latent heat (kW, Btu/hr)
$${\text{q}}_l$$ = latent heat load (kW, Btu/hr)
For an air flow (1) can be modified to:
$$\text{SHR}=\frac{{\text{c}}_{\text{p}}\left({\text{t}}_{\text{o}}-{\text{t}}_{\text{i}}\right)}{{\text{h}}_{\text{o}}-{\text{h}}_{\text{i}}}......\left(\text{2}\right)$$
where,
$${\text{c}}_{\text{p}}$$ = specific heat air (1.005 kJ/kg°C, 0.240 Btu/lb°F)
$${\text{t}}_{\text{o}}$$ = outlet air temperature (°C, °F)
$${\text{t}}_{\text{i}}$$ = inlet air temperature (°C, °F)
$${\text{h}}_{\text{o}}$$ = outlet moist air enthalpy (kJ/kg, Btu/lb)
$${\text{h}}_{\text{i}}$$ = inlet moist air enthalpy (kJ/kg, Btu/lb)