湿球温度变化与两级制冷装置的性能研究  

Research on Wet-bulb Temperature Variations and Performances ofTwo-stage Compression Refrigeration Plants

作　　者：张建一[1] 毛有花[1] 

机构地区：[1]集美大学机械工程学院,福建厦门361021

出　　处：《制冷》2002年第2期15-18,共4页Refrigeration

摘　　要：本文以厦门市实测气象数据为基础 ,分析统计了厦门冬季和夏季昼夜湿球温度差异。通过编制程序计算比较不同工况下 ,湿球温度降低对制冷装置性能的影响及具体节能效果。计算表明 ,蒸发温度为 -2 8～ -3 3℃时 ,给定的制冷装置在冬季的夜间运行与白天相比 ,耗功量减少可达 4.6% ,制冷系数最大可以提高 6.8%。Based on actual weather data in Xiamen,the wet-bulb temperature differences between daytime and nighttime are analyzed The performance of two-stage refrigerating plants under different wet-bulb temperatures is calculated by a computer program The results show that for a given refrigerating plant in Xiamen in winter evening under -28～-33℃ evaporating temperature,the decrease of shaft horse-power will reach to 4 6% and the increase of COP will reach to 6 8%,compared with operation in daytime .

关 键 词：两级制冷装置 性能 湿球温度 两级压缩 制冷系数 温度差 

分 类 号：TB65[一般工业技术—制冷工程]