Abstract

This paper briefly introduces the origin and development of distributed energy resource, and analyses the advantages and disadvantages of the existing evaluation index of distributed energy resource system performance. Based on the consideration of diversification and difference in energy form and grade of cold, heat and power energies output by the distributed cold, heat and power system, this paper puts forward the index system and its corresponding calculation method consisting of the key indexes including thermo-electric ratio, cold-electric ratio, relative energy saving rate and exergy efficiency, etc., so as to provide methodology support for the scientific and appropriate evaluation of energy-saving efficiency of the distributed CCHP (Combined Cooling, Heating and Power) system.

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