风冷热泵机组节流装置的改进及其系统的分析

Modification of Small-sized Air-Cooled Heat Pump‘s Orifice Set and Entropy Anasyse of the System

本文对风冷热泵冷热水机组节流装置进行改进,通过不同的试验工况条件下的性能及其各种相关状态参数的测试,比较了系统改进前后的制冷量和能效比,并采用制冷系统的火用分析方法,从理论上分析和验证电子膨胀阀的应用将有利于系统工作状态的改善与机组性能的进一步提高。

we modified the small-sized air-cooled heat pump＇ orifice set, got the system＇ state parameter at different work condition by experimental test, compared refi＇igerating output and COP of the system with electronic expanding valve and thermal expanding valve, using entropy analyse of the system analysed and proofed that the system＇s functional mode and performance improved using electronic expanding valve than thermal expanding valve.