New assessment method for environmental performance of HVAC & R systems

Reviews the literatures on the assessment methods for the environmental performance of HVAC & R systems, and puts forward a new method, in which based on expert questionnaire survey and analytic hierarchy process method, defines the weights of various environment influencing factors, calculates equivalence of various pollutants based on the emission quantity and the weights calculated of various pollutants, and unifies all the influencing factors to a new unit—black point, which expresses the environmental performance of HVAC & R systems directly and precisely. Applies the method to calculating the environmental performance of the HVAC & R system in an office building. The results show that the new method is simple and effective.