Researching On Energy Efficiency Evaluation About Central Air-conditioning Heating System Of Public Buildings In Wuhan

The paper based on the 2007-2009 wuhan national office buildings and public buildings energy consumption survey,energy audit, and on the basis of public buildings in wuhan area of central air-conditioning & heating system as the research object, the analysis of central air-conditioning & heating system of public buildings, in the study of the typical office buildings, the mall, the hotel and other public buildings on the calculation method of air-conditioning& heating system and subsystem efficiency coefficient, the establishment of the central air conditioning & heating system and subsystem on the comprehensive evaluation of the efficiency quantification.The paper introduced the calculation process of the air-conditioning & heating system efficiency coefficient, according to the function of the building, cold source form, end system forms,compared the design efficiency coefficient of the central air-conditioning & heating system and subsystem, analysed the relevance between the air-conditioning system (partial load) DEER and each subsystem (partial load)DEER, discussed the influence of the air-conditioning system DEER when the subsystem DEER changed, and according to the different forms of cold source, trying to give calculation formula of the central air-conditioning system efficiency coefficient on partial load.The paper on the basis of the different countries and regions IPLV load weight, temperature and frequency analysis method and energy consumption of the load simulation, obtained the partial load efficiency coefficient of the air-conditioning & heating system of public buildings in wuhan.The paper presented the limiting values of the design efficiency coefficient, the design efficiency coefficient on partial load and reconstruction in the central air-conditioning & heating system and cold source system.The paper calculated the hourly operating energy efficiency coefficient and year-round operation energy efficiency coefficient, based on the operating record of the air conditioning unit and the analysis of energy consumption simulation.The Paper were calculated and analyzed to typical building air-condition system of heating of energy-saving after the transformation, the central air conditioning heating engineering efficiency promotion of building energy efficiency rating of the coefficient of influence.