Multi-Connected air-Conditioning system standards analysis and annual operating performance evaluation

Abstract

Problems and limitations of existing multi-connected air-conditioning unit standards are analyzed in this chapter. Based on irrationality of the existing evaluation criteria, the evaluation index and method for evaluating whole year energy consumption and efficiency of multi-connected air-conditioning system are studied. The evaluation index, calculation formula, weights, and testing condition parameters are proposed. The correctness of the evaluation method is verified. The results show that eight region average classification method based on dynamic load is feasible to evaluate seasonal energy efficiency ratio of multi-connected air-conditioning system. The evaluation method is applicable to evaluate DVM or variable frequencycontrolled multi-connected air-conditioning system. The evaluation method can be applied to evaluate annual energy consumption and annual integrated energy use efficiency of multi-connected air-conditioning system in the building, as well as to compare energy efficiency among different air-conditioning systems.