This paper presents a method to acquire runtime distribution ratio of building air conditioning system under part load condition (part load coefficient of system) through practical energy consumption data. By utilizin...This paper presents a method to acquire runtime distribution ratio of building air conditioning system under part load condition (part load coefficient of system) through practical energy consumption data. By utilizing monthly energy consumption data of the entire year as the analysis object,this paper identifies data distribution,verifies distribution characteristics and analyzes distribution probability density for the issue of running time distribution ratio of air conditioning system in part load zones in the whole operation period,thus providing a basic calculation basis for an overall analysis of energy efficiency of air conditioning system. In view of the general survey of public building energy consumption carried by the government of Chongqing,this paper takes the governmental office building as an example,the part load ratio coefficient corresponding to practical running of air conditioning system of governmental office building in Chongqing is obtained by utilizing the above probability analysis and the solving method of probability density function. By utilizing the ratio coefficient obtained using this method,the part load coefficient with any running ratio of air conditioning system can be obtained according to the requirement of analysis,which can be used in any load ratio for analyzing running energy efficiency of air conditioning system.展开更多
基于分布式能量系统的双源可逆型空调系统作为一个独立运行的冷热供应系统,不仅有分布式系统的优点,而且产品单一可避免电上网的问题。对内燃机联产双源系统进行了深入的分析,由敏感性分析结果可知,热泵的循环性能系数(coefficient of p...基于分布式能量系统的双源可逆型空调系统作为一个独立运行的冷热供应系统,不仅有分布式系统的优点,而且产品单一可避免电上网的问题。对内燃机联产双源系统进行了深入的分析,由敏感性分析结果可知,热泵的循环性能系数(coefficient of performance,COP)和发电效率对双源系统性能影响很大。根据典型内燃机变工况的计算方法和对热泵考虑输入功率的影响,以及对余热型溴化锂机组考虑余热温度的影响,得出双源系统的变工况特性,与其它供热/冷系统比较可知,双源系统的供能能力比土壤源热泵机组和直燃型溴化锂机组要优越;因此,认为内燃机联产双源系统有很大节能潜力,值得推广。展开更多
基金Project(50838009) supported by the National Natural Science Foundation of ChinaProjects(2006BAJ02A09,2006BAJ02A13-4) supported by the National Key Technologies R & D Program of ChinaProject(CSTC,2008AB7110) supported by the Key Technologies R & D Programme of Chongqing,China
文摘This paper presents a method to acquire runtime distribution ratio of building air conditioning system under part load condition (part load coefficient of system) through practical energy consumption data. By utilizing monthly energy consumption data of the entire year as the analysis object,this paper identifies data distribution,verifies distribution characteristics and analyzes distribution probability density for the issue of running time distribution ratio of air conditioning system in part load zones in the whole operation period,thus providing a basic calculation basis for an overall analysis of energy efficiency of air conditioning system. In view of the general survey of public building energy consumption carried by the government of Chongqing,this paper takes the governmental office building as an example,the part load ratio coefficient corresponding to practical running of air conditioning system of governmental office building in Chongqing is obtained by utilizing the above probability analysis and the solving method of probability density function. By utilizing the ratio coefficient obtained using this method,the part load coefficient with any running ratio of air conditioning system can be obtained according to the requirement of analysis,which can be used in any load ratio for analyzing running energy efficiency of air conditioning system.
文摘基于分布式能量系统的双源可逆型空调系统作为一个独立运行的冷热供应系统,不仅有分布式系统的优点,而且产品单一可避免电上网的问题。对内燃机联产双源系统进行了深入的分析,由敏感性分析结果可知,热泵的循环性能系数(coefficient of performance,COP)和发电效率对双源系统性能影响很大。根据典型内燃机变工况的计算方法和对热泵考虑输入功率的影响,以及对余热型溴化锂机组考虑余热温度的影响,得出双源系统的变工况特性,与其它供热/冷系统比较可知,双源系统的供能能力比土壤源热泵机组和直燃型溴化锂机组要优越;因此,认为内燃机联产双源系统有很大节能潜力,值得推广。
