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对上海地区某高层住宅楼应用的地源热泵系统的实际性能进行研究,检测系统逐日、逐月及全年的空调和热水能耗。结果表明:在现有入住率较低的情况下,3栋楼每户年平均能耗分别为52.5、72.0和83.4 MWh;空调热泵和热水热泵机组待机率分别超过了58%和81%;供暖、制冷和过渡季热水能耗分别占总能耗的70%、55%和90%。热泵机组长期低负荷运行且频繁启停,及水泵全年工频不间断运行是导致全年能耗偏高的主要原因。如何降低热水系统能耗是系统节能的关键之一。可采取所有热泵机组形成环网、水泵顺序启停和变频运行,并根据热水器内温度设定热水热泵主机启停等针对性措施,实现系统节能降耗。
The actual performance of GSHP system applied to a high-rise residential building in Shanghai is studied, and the energy consumption of air-conditioning and hot water system is checked daily, monthly and throughout the year. The results show that the annual average energy consumption of each of the three buildings is 52.5, 72.0 and 83.4 MWh respectively when the existing occupancy rate is low; the standby rates of air-conditioning heat pump and hot-water heat pump units exceed 58% and 81% respectively; Heating, cooling and transitional season hot water consumption accounted for 70%, 55% and 90% of the total energy consumption. Long-term operation of low-load heat pump units and start and stop frequently, and the pump year-round frequency continuous operation is the main reason leading to high energy consumption throughout the year. How to reduce the energy consumption of hot water system is one of the keys of the system energy saving. Can take all heat pump units form a ring network, start and stop the pump sequence and frequency operation, and according to the temperature inside the water heater set hot water heat pump host start and stop and other targeted measures to achieve energy saving system.