不同气候区排风全热回收空调系统的节能效果分析

Analysis on energy-saving performance of exhaust air total heat recovery air-conditioning system in different climate zones

选择哈尔滨、北京、武汉、广州作为代表城市,研究全热回收空调系统在我国典型气候区的节能效果。根据典型气象年气候数据,采用动态逐时计算方法,计算各气候区的处理单位体积新风全年热回收量,同时考虑额外风机能耗对排风热回收节能效果的影响。结果表明:全热回收空调系统在北方地区节能效果最为显著,对于处理单位体积新风,哈尔滨和北京的全年节能量分别为84.3 MJ和55.7 MJ,武汉地区的全年节能量为44.6 MJ,而广州地区的全年节能量最少,为33.3 MJ。

Taking H arbin,Beijing, Wuhan and Guangzhou as typical cities, the energy-saving performance of the total heat recovery air-conditioning system in typical climatezones is studied. Based on the weather data of typical meteorological years (TM Y ) , theannual heat recovery quantity obtained by processing the unit volume fresh air is calculatedin four climate zones using dynamic hourly m ethod, and the impacts of additional fan’s energyconsumption on the energy-saving performance of the exhaust air heat recovery is alsotaking into consideration. The results show that total heat recovery air-conditioning systemperforms the best in northern area, the annual energy-saving obtained by proccessingthe unit volume fresh air can reach 84. 3 MJ and 55. 7 MJ respectively can achieve 44. 6 MJ in W uhan; the heat recovery device shows the worst energysaving performance in Guangzhou, which is 33. 3 MJ.