R22和R410A多联式空调机组经济配管长度理论研究  

Theoretical Study on Economical Pipe Length of VRF A/C System using R22 and R410A

作　　者：盛健[1] 周志钢[1] 吴兆林[1] 虞海峰[1] 郝玉影[1] 

机构地区：[1]上海理工大学制冷技术研究所,上海200093

出　　处：《建筑科学》2009年第10期76-80,共5页Building Science

基　　金：上海市重点学科建设项目资助(T0503)

摘　　要：随着多联机的广泛使用,多联机配管长度对机组性能的影响成为业内人士关注的问题。配管长度的增加,虽然可以扩大多联机的作用域,但是同样带来了回油困难、制冷量衰减和系统需充注大量制冷剂的问题,造成了多联机在理论上具有节能潜力,而在实际使用中未必有效的现象。本文就机组配管长度对机组的影响进行了理论分析计算,讨论了多联机的经济配管长度。With the widespread use of variable refrigeration flow （VRF） air-conditioning （A/C） system, the influences of pipe length on system performance attracted more concern. With the longer pipe, although the refrigeration zone was enlarged, several problems were also brought forward, such as difficulties of oil return, the decrease of cooling capacity, and meanwhile more refrigerant was required. All these would result in a situation that VRF A/C system had energy-saving potential in theory, while in practice, it had low energy efficient. In this paper, the economical pipe length of VRF A/C system was calculated and its impacts on the system were discussed.

关 键 词：多联机 经济配管长度 效率 理论计算分析 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]