多联机VRV系统研究.pdf

ww w. zh ul on g. co m 多联机 VRV 系统研究 王洪利 马一太 姜云涛 李敏霞 （天津大学热能研究所，天津 300072） 摘要：针对多联机 VRV 系统原理和特点，对其系统性能进行了分析。结果表明：采用高效涡旋压缩机、冷 （热）量直接由制冷剂输送和冷（热）量随负荷灵活调节，使得多联机 VRV 系统具有较高的 COP 和运行稳 定性；同时也指出，回油问题、配管长度的影响和大量制冷剂的使用，成为 VRV 系统推广应用首要解决的 关键难点。通过多联机 VRV 系统与传统风机盘管热泵空调系统初投资和运行费用对比分析，当建筑规模较 大时，传统风机盘管热泵空调系统的经济性要优越于多联机 VRV 系统。本文为多联机 VRV 系统的研究提供 依据。 关键词：多联机 VRV 涡旋压缩机 负荷 COP 制冷剂 经济性 RESEARCH ON SYSTEM OF MULTI-VRV AIR CONDITIONING Wang Hongli Ma Yitai Jiang Yuntao Li Minxia (Thermal Energy Research Institute of Tianjin University) Abstract: Due to the principles and characteristics, the performances of multi-VRV air conditioning system was analyzed. The results show that the using of high efficient scroll compressor, energy transportation by refrigerants directness and energy flexible adjustment with load, are contributed to high COP and operation stability. On the other hand, the questions of oil return, influences of tubing length and employing lots of refrigerants, are made of the key difficulties of generalizing application of multi-VRV air conditioning system. Through the comparison analysis of investment and annual operating cost between multi-VRV air conditioning system and conventional fan coil heat pump and air conditioning system. As the building scale is bigger, the economical efficiency of the conventional fan coil heat pump and air conditioning system is better than the multi-VRV air conditioning system. This paper provides a thorough theoretical basis for researching on the multi-VRV air conditioning system. Keywords: multi-VRV air conditioning scroll compressor load COP refrigerant economical efficiency 0 引言 多联机VRV[1] (variable refrigerant volume)空调系统即可变制冷剂流量空调系统，由日本大金（DAIKIN） 公司于 1982 年开发推出，打破了传统的中央空调(水冷冷水机组+热水锅炉+空调末端)设计理念，在传统的 房间分体空调器由一台室外机连接一台室内机的一对一方式的基础上，研制出了一台室外机连接多台室内 机的供暖制冷系统，使设计、安装、运行及维护管理更为简单、方便，节能[2]。 基金项目：国家自然科学基金 作者简介：王洪利，（1976- ），男，在读博士研究生，E-mail: laotingwhl@163.com ww w. zh ul on g. co m 图 1 多