夏热冬冷地区水(地)源热泵系统测试及问题分析

Measurement and Analysis of Two Water or Ground Source Heat Pump Systems in Hot Summer and Cold Winter Zone for Issue

对夏热冬冷地区2个水(地)源热泵系统进行的夏季工况测试数据分析,获得了水(地)地源热泵系统的夏季工况部分负荷下机组和系统的制冷系数及水泵输送能效比,并得出在部分负荷情况下系统的节能率较难达到30%。对系统实际运行情况下节能效果不显著的原因进行了分析,如主机、水泵低效运行、换热误差、冷热堆积、实际运行费用高于预计等问题,并提出相应建议。

By measuring and analyzing two water or ground source heat pump systems in hot summer and cold winter zone, the transportation energy efficiency ratio of water pump and coefficient of performance(COP)for the heat pump units and systems in summer are obtained as well as the energy saving rate is difficult to reach30%.The paper analyze the reason that the energy saving effect is not significant such as the inefficient operation of air conditioner host and water pump,heat exchange errors,cold and hot accumulation,actual operating cost is higher than expected.At length,put forward suggestions.