CO_2充入量对小型热泵干燥机性能的影响  

Effect of CO_2 filling amount on performance of small heat pump dryer

作　　者：杨道龙[1] 李娟玲[1] 姬长英[1] 何艳东[1] 

机构地区：[1]南京农业大学工学院/江苏省智能化农业装备重点实验室,江苏南京210031

出　　处：《华南农业大学学报》2016年第5期103-108,共6页Journal of South China Agricultural University

基　　金：江苏省重点研发计划项目(BE2015314)

摘　　要：【目的】探究CO_2充入量与热泵干燥机系统功率、干燥室内温度、系统性能系数的关系,获得CO_2最佳充入量。【方法】根据实际生产要求分析热泵干燥机的工作原理,搭建CO_2热泵干燥试验平台;使用PLC采集数据和设计监测系统;进行CO_2充入量试验。【结果】当CO_2充入量为2.5 kg时,该系统功率达1 200 W,干燥室内温度较高,达70℃,系统的能耗比(COP)为3.89,单位时间除湿量为1.636 kg·h-1。此时冷却器和蒸发器压力适宜,进出口温差较大。【结论】该系统能源利用率高,性能优。[ Objective] To explore the relationship between CO2 filling amount and the performances of the heat pump dieter system including the system power, the drying chamber temperature and the system performance coefficient, and to determine the optimal CO： filling amount. [ Method] The working principles of the heat pump dryer were analyzed according to the actual production requirements. The CO2 heat pump drying experimental platform was established. Data collection and monitoring system design were conducted by PLC. CO2 filling experiments were performed. [ Result ] When the CO2 filling amount was 2.5 kg, the system power reached 1 200 W, the ＆Ting chamber temperature reached 70 ℃, the energy consumption rate （Cop） was 3.89, the dehumidification rate was 1. 636 kg . h^-1 , the pressures of the cooler and evaporator were suitable, and the temperature difference between inlet and outlet was relatively large. [ Conclusion]This system has high energy efficiency and excellent performance.

关 键 词：热泵干燥机 CO2充入量 系统性能 PLC 

分 类 号：TB69[一般工业技术—制冷工程]