Annual performance factor for multi-connected air-condition(heat pump)unit
Based on the test and calculation methods of annual performance factor(APF)stated in GB/T 18837-2015 Multi-connected air-condition(heat pump)unit,the problems in the test and calculation of the unit APF are analyzed.Meanwhile,based on the cooling(heating)temperature occurrence time of 33 cities in GB/T 17758-2010,the coefficients of performance test results of two multi-connected air condition(heat pump)units are analyzed.The results show that the coefficient of performance of multi-connected air condition(heat pump)unit is more affected by the building type and the re-gion.It has limitations to use the performance index calculated by the cooling(heating)temper-ature occurrence time of single region to evaluate the multi-connected unit.It is suggested that in the future revision of the standard,the performance evaluation index of multi-con-nected air-condition(heat pump)unit should be subdivided according to different climate regions of building.
multi-connected air-condition(heat pump)unitannual performance factorbuilding typetemperature occurrence time
万方数据
维普
