太阳能辅助热泵就仓干燥系统的研究与应用  

THE STUDY AND APPLICATION OF SOLAR ASSISTED HEAT PUMP SYSTEM FOR GRAIN BIN DRYING

作　　者：代建国[1] 汪喜波[2] 代彦军[1] 魏雷 

机构地区：[1]上海交通大学制冷及低温工程研究所,上海200240 [2]中国储备粮管理总公司,北京100040 [3]河南未来机电工程有限公司,郑州450001

出　　处：《太阳能学报》2010年第5期575-580,共6页Acta Energiae Solaris Sinica

基　　金："十一五"国家科技支撑计划项目(2006BAD08806-2)

摘　　要：设计一套太阳能辅助热泵就仓干燥系统,并建立各个部件及谷物干燥的数学模型,分析了一套由100m^2真空管空气集热器和加热量为90kW的热泵组成的系统,在不同天气情况下的工作模式以及在典型晴天下的工作性能;结合谷物干燥模型模拟了谷物的初始湿含量为17%,初始温度为20℃,3000t谷物在10～15d内的干燥情况。得出:太阳能保证率可达到20%,系统平均加热量为120kW,COP可达到约4.14,降低1.5%的水分需要10d时间,降低2%的水分需要约15d时间。A solar assisted heat pump for grain bin drying has been design. This system consists of 100m^2 evacuated tube collectors and heat pump system heating capacity for 90kW. The system＇ s work pattern changed with various weather condition, and the working performance in typical sunny day. Heat and mass transfer equations and drying rate equation of grain were used to develop a low temperature drying model have been presented. The performance of 3000t grain bin drying by solar assisted heat pump system in 10 - 15 days was simulated. The initial humidity ratio of grain is 17%, and the temperature is 20℃. The results showed that the solar fraction（SF） is about 20%, the average system＇ s heating capicity is 120kW, the COP can be 4.14, and it can be drying 1.5% moisture in 10days.

关 键 词：太阳能辅助热泵 就仓干燥 谷物 低温干燥模型 

分 类 号：TK51[动力工程及工程热物理—热能工程] S375[农业科学—农产品加工]