有限热源影响下VM循环热泵的热力学分析  

Thermodynamic of the VM Cycle Heat Pump Under the Effect of Finite Heat Capacities

作　　者：吴宇[1] 王帅[1] 欧阳晶莹[1] 谢英柏[1] 

机构地区：[1]华北电力大学,河北保定071003

出　　处：《应用能源技术》2012年第9期33-36,共4页Applied Energy Technology

摘　　要：对于低温余热,VM循环热泵是一种高效节能的利用途径。文中采用有限时间热力学方法,推导了基于牛顿线性导热定律的内可逆VM循环热泵泵热率的表达式。分析表明:采用VM循环热泵用于地板辐射采暖时,随着有限高温热源的入口温度和有限低温热源进口温度的增加,泵热率将增大;而随着有限高温热源的出口温度和有限低温热源出口温度的增加,泵热率将减小。并且低温有限热源温度的变化对泵热率的影响远大于高温有限热源温度的变化。VM（Vuilleumier） cycle heat pump heat. The heat pumping rate for endoreversible conductive law is derived applied the finite time is a high efficient way to dig low temperature waste VM cycle heat pump governed by the linear thermal thermodynamic method. Results show when using the VM cycle heat pump for floor radiation heating, the heat pumping rate of VM cycle heat pump will increase at the elevation of inlet temperature of finite high temperature heat capacity and the outlet temperature of finite low temperature heat capacity. While it decreases when increase the temperature of the high temperature heat capacity outlet and the low temperature heat capacity inlet. Moreover, the impact of the temperatures of finite low temperature heat capacity has a greater influence on the heat pumping rate than that of the finite high temperature heat capacity.

关 键 词：VM循环热泵 有限热源 温度 泵热率 有限时间热力学 

分 类 号：TB65[一般工业技术—制冷工程]