Heat and moisture dissipation from the human body sometimes form the main air conditioning load. The heat emitted from the human body to indoor air can be in two forms: sensible heat and latent heat. The former is emitted by convection, conduction or radiation, while the latter refers to the latent heat of vaporization contained in the water vapor emitted by the human body. The latent heat and the convective heat of the sensible heat will form the instantaneous cooling load directly, while the radiant heat will form the hysteresis cooling load. The corresponding cooling load coefficient should be used for calculation