气泵和压缩机热回收系统的实测性能比较

Comparison of measured performance of booster and compressor heat recovery systems

为了有效回收空调机房排风热量,提出气泵和压缩机热回收系统,设计出样机并应用于北京某实验基地的空调机房。当新风进口温度从3℃升至15℃时,通过实际测试获得了气泵系统和压缩机系统的制热量、功率、温度效率、新风出口温度、性能系数(COP)及节能率。结果表明:当新风进口温度低于7℃时,气泵系统性能较好;当新风进口温度高于等于7℃时,压缩机系统性能较好;与采用电锅炉相比,气泵系统和压缩机系统的节能率分别为38.85%、35.25%。

To effectively recover the exhaust heat of the air conditioning machine room,the heat recovery system of the booster and compressor is proposed,and the prototype is designed and applied to the air conditioning machine room of an experimental base in Beijing.When the outdoor air inlet temperature increases from 3℃to 15℃,the heating capacity,power,temperature efficiency,outdoor air outlet temperature,COP,and energy-saving rate of the booster system and compressor system are obtained through practical tests.The results show that when the outdoor air inlet temperature is lower than 7℃,the performance of the booster system is better.When the outdoor air inlet temperature is higher than or equal to 7℃,the performance of the compressor system is better.Compared with the electric boiler,the energy-saving rates of the booster system and the compressor system are 38.85%and 35.25%,respectively.