石文星 赵伟 王宝龙

(清华大学建筑技术科学系 北京 100084)

制冷学报.-2008，29（3）.－10～15

    摘要：多联式空调(热泵)系统(简称多联机)是多末端直接蒸发式空调系统，其多末端结构和不同控制方法决定了其特殊的部分负荷特性.以制冷运行为例，阐述影响多联机性能的因素及其影响关系，给出各种控制方式下多联机在恒定室外温度条件下的部分负荷“性能域”概念图，以及性能域随室外温度的变化趋势；根据多联机的部分负荷特性和变工况特性，指出目前的多联机产品性能评价评价方法尚存在的不足，进而提出多联机制冷季节评价指标SEER或IPLV(C)的评价方案；建议今后多联机采用APF评价体系更能体现我国标准体系的延续性和系统性。

    关键词：热工学；多联式空调(热泵)系统；负荷率；仿真；性能评价

Abstract The Multi-connected Air-conditioning (MCAC) system is a direct-expansion air-conditioning system, and its multi-terminal structure and different control methods determine the specific part load performance. The factors affecting the part load performance of the MCAC system were examined under cooling condition, and through simulation, the “performance domain” of the MCAC system using different control methods was presented to describe the COP distribution. The shortcomings of the conventional evaluation methods were analyzed based on the part load performance and variable condition characteristics of the MCAC system. In addition, the improved SEER and IPLV(C) evaluation methods for the MCAC system were proposed. Our results indicate that the APF evaluation method can be used in the MCAC system evaluation system.15Refs. In Chinese.

Keywords Pyrology; Multi-connected Air-condition (heat pump) System (MCAC system); Load ratio; Simulation; Performance evaluation