Patent ID: 8457933

Claim:
A method for predicting a cooling load of a cooling system for a building, comprising the steps of: calculating, using the cooling system, a sensible heat load and a latent heat load, respectively, of solar radiation heat, conduction heat of the building, heat caused by infiltrated outdoor air and ventilated outdoor air of the building, and internally generated heat for every conditioned space of the building; and adding the calculated sensible heat load and latent heat load to obtain the cooling load of the cooling system for the building so that the cooling system is run at the obtained cooling load, wherein the sensible heat load of the cooling load is calculated by {dot over (Q)} s =P s ( T o −T i )+{dot over (m)} s ( h io −h i )(1−ε s )+ C s (1) wherein, {dot over (Q)} s is the sensible heat load, P s is a sensible heat load coefficient, {dot over (m)} a is an outdoor air coefficient, C s is a sensible heat load constant, T o is an outdoor air temperature, T i is an indoor temperature, h io is enthalpy of air at a point where an indoor specific humidity meets the outdoor air temperature on a psychrometric chart, h i is enthalpy of air in an indoor condition, and εs is a sensible heat recovery ratio of infiltrated and ventilated air, and wherein the latent heat load of the cooling load is calculated by {dot over (Q)} l ={dot over (m)} a ( h o −h io )(1−ε l )+ C l (2) wherein, {dot over (Q)} l is the latent heat load, {dot over (m)} a is the outdoor air coefficient, C l is a latent heat load constant, h o is an enthalpy of air in an outdoor air condition, h io is the enthalpy of air at the point where indoor specific humidity meets the outdoor air temperature on the psychrometric chart, and ε l is a latent heat recovery ratio of infiltrated and ventilated air.