燃气机热泵与电驱动热泵技术经济性实测对比

Technical and Economic Comparison of Gas Engine Heat Pump and Electric Driven Heat Pump

以上海地区某办公建筑为对象,对燃气机热泵、电驱动热泵的运行情况进行实测。分析室外温度、部分负荷率对燃气机热泵、电驱动热泵运行性能的影响,比较二者的经济性、碳排放量。燃气机热泵机组、电驱动热泵机组均多运行在低部分负荷率工况,供暖期尤为明显。当部分负荷率一定时,两种热泵机组的制冷性能系数均随室外温度的升高而减小,制热性能系数均随室外温度的升高而增大。在室外温度一定时,两种热泵机组的制冷性能系数、制热性能系数均随部分负荷率的增大而先增加后减小。在室外温度、部分负荷率一定时,两种热泵机组的制冷性能系数、制热性能系数并不是定值,而是在一定的范围内波动。在上海当前的电价、气价条件下,燃气机热泵机组的运行费用比较高。燃气机热泵机组二氧化碳排放量更低,对环境更加友好。

Taking an office building in Shanghai area as the object,the operation of gas engine heat pump and electric driven heat pump is measured.The effects of outdoor temperature and partial load rate on the operation performance of gas engine heat pump and electric driven heat pump are analyzed,and economics and carbon emissions of the two are compared.Gas engine heat pump unit and electric driven heat pump unit mostly operate at low partial load rate,especially in heating period.When the partial load rate is constant,the cooling performance coefficient of the two heat pump units decreases with the increase of outdoor temperature,and the heating performance coefficient increases with the increase of outdoor temperature.When the outdoor temperature is constant,the cooling performance coefficient and heating performance coefficient of the two heat pump units first increase and then decrease with the increase of partial load rate.When the outdoor temperature and partial load rate are constant,the cooling performance coefficient and heating performance coefficient of the two heat pump units are not a fixed value,but fluctuate within a certain range.Under the current electricity price and gas price in Shanghai,the operation cost of gas engine heat pump unit is relatively high.The gas engine heat pump unit has lower carbon dioxide emissions and is more environmentally friendly.