全年用泵驱动回路热管及机械制冷复合冷却系统的性能特性
Performance characteristics of pump-driven mechanical refrigeration and thermosyphon integrated system
摘要：
设计了一种新型复合冷却系统，利用中间板式换热器将机械制冷和泵驱动回路热管结合在一起，可以实现3种工作模式：热管模式、制冷模式和双模式。实验结果表明，在相应的温度范围内，3种工作模式的冷却效果显著。当室内外温差分别为10 ℃和18 ℃时，热管模式的能效比(EER)分别为5.6和10.4；复合系统的全年能效比(AEER)可以达到8.3，是传统型空调COP的2倍多。针对某小型全年用冷房间的模拟计算发现，室内温度为25 ℃时，在国内不同气候区4个城市使用复合系统的节能率分别为18.0%，18.8%，31.5%，49.4%。
Abstract：
Designs a pump-driven integrated system combined with mechanical refrigeration and thermosyphon, connected by a plate heat exchanger. The integrated system can work in three operating modes, including thermosyphon free cooling, mechanical refrigeration and dual mode. The experimental results show that the system gains remarkable cooling effect in three working modes with their own temperature ranges. The energy efficiency ratio （EER） of the thermosyphon mode can reach 5.6 and 10.4 at the indoor and outdoor temperature difference of 10 ℃ and 18 ℃, respectively. The annual energy efficiency ratio（AEER） of the integrated system is 8.3, execeding twice of that in the traditional air conditioner. Simulation and calculation of a small cold room for the whole year in cities located in different climate zones of China shows that when the indoor temperature is set at 25 ℃, the annual energy saving rate can reach 18.0%，18.8%，31.5%，49.4%, respectively, compared with the traditional air conditioner.
Keywords:cold room for the whole year, pump driven, free cooling, thermosyphon pipe, integrated system, energy saving