On August 1st, 2008, China’s first high speed railway, Beijing-Tianjin Intercity High Speed Railway was put into use, marking the beginning of the high speed era.
【单选题】某办公室设计为风机盘管加新风空调系统,并设有“排风-新风热回收装置”,室内全热冷负荷为10kW,配置的风机盘管全热供冷量为9kW,新风空调机组的送风量为1000m3/h, 排风量为新风量的80%,以排风侧为基准的“排风-新风热回收装置”的显热回收效率为62. 5%,已知新风参数为:干球温度t w =35°C,比焓h w =86kJ/kg(干空气);室内设计参数为:干球温度t n =25°C,比焓h...