三种膨胀装置不可逆损失的比较  

A Comparative Study on Irreversible Loss of Three Kinds of Expansion Devices

作　　者：和永超[1] 侯予[1] 赵红利[1] 陈纯正[1] 

机构地区：[1]西安交通大学制冷与低温工程研究所,710049

出　　处：《低温与超导》2005年第2期53-57,共5页Cryogenics and Superconductivity

摘　　要：本文利用熵法对涡流管、透平膨胀机及节流阀三种装置进行了研究。通过理论分析说明了在相同的工况下,节流阀的火用损失最大,涡流管次之,透平膨胀机最接近等熵膨胀。随着入口温度的升高,涡流管的火用效率明显的增大,而其它两个变化不大。研究结果对于膨胀制冷机的研究开发具有一定的指导意义。In this paper, a method of entropy has been used to investigate vortex tube, throttle valve and expansion turbine. By theoretical analysis, it can be achieved that in the same condition, throttle valve loses the most exergy, vortex tube takes the second place, and expansion turbine is the nearest constant entropy expansion. With the increase of inlet temperature, the exergy efficiency of vortex tube will enhance obviously, but the other two do not change so much. This conclusion can be used to guide the research of expansion refrigerator.

关 键 词：不可逆损失 装置 透平膨胀机 YONG损失 YONG效率 涡流管 入口温度 研究开发 研究结果 节流阀 制冷机 

分 类 号：TB653[一般工业技术—制冷工程] TM273[一般工业技术—材料科学与工程]