连接软管管径对小型分置式压缩制冷循环系统制冷性能的影响
Influence of diameter of connecting hoses on refrigeration performance of small-scale separated-type compression refrigeration cycle systems
摘要：
在实际应用场景中,鉴于安装空间狭窄、设备布局紧凑等现实条件,小型压缩制冷循环系统需要按零部件的功能进行分置安装。本文开展了不同管径连接软管的流动阻力试验研究,分析了不同压缩机转速和制冷剂充注量下不同管径连接软管对系统制冷量和COP的影响。结果显示:连接软管管径≥6 mm时,在相同充注量下,系统制冷量和COP与光滑铜管系统基本持平或更高,可以替代光滑铜管,实现快速连接并解决安装空间受限、焊接操作不便的问题。
Abstract：
In practical application scenarios,because of practical conditions such as narrow installation spaces and compact equipment layouts,small-scale compression refrigeration cycle systems need to be installed separately according to the functions of their components.In this paper,the experimental studies on the flow resistance of connecting hoses with different diameters are carried out,and the effects of connecting hoses with different diameters on the cooling capacity and COP of the system under different compressor rotational speeds and refrigerant charging quantities are analysed.The results show that when the diameter of the connecting hose is 6 mm or greater,under the same charging quantity,the cooling capacity and COP of the system are basically the same as or higher than those of the smooth copper tube system,which can replace the smooth copper tube,enabling quick connection and addressing issues of limited installation space and inconvenient welding operations.
Keywords:separated type; compression refrigeration; connecting hose; pipe diameter; refrigeration performance; flow resistance; rotational speed; charging quantity