系统运行时外部参数变化将引起系统各内部参数变化,本文通过改变外部参数冷却水流量研究内部关键参数变化趋势。实验结果表明：随着冷却水的流量增加,压比减少,气体冷却器出口温度和排气压力降低,制热量和制热系数增加。在此基础上,通过调节外部参数研究气体冷却器出口温度以及蒸发温度对系统性能的影响。结果表明：随着蒸发温度的升高,制热系数随之提高;气体冷却器出口温度从34.3℃升高到41.4℃制热系数下降22%。
The variation of the external parameters will lead to the variation of internal parameters, we investigate the trends of internal key parameters by altering the cooling water flow rate.Experiment results show that the pressure ratio,the outlet temperature of gas cooler and exhaust pressure decrease,meanwhile the heating capacity and heating coefficient of performance（COP_h）increases when the cooling water flow rate increases.Based on above research,the effects of evaporation temperature and outlet temperature of gas cooler on system performance are investigated by adjusting the external parameters.Experiment results show that COP_h increases when the evaporation temperature increases,COP_h reduces about 22%when the outlet temperature of gas cooler changes from 34.3℃to 41.4℃.
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