冷风机化霜电加热量的确定方法与性能优化分析  

A simple model to calculate the defrosting electrical energy input and the ways to optimize the air cooler's electro-thermal defrosting system

作　　者：万锦康[1] 张青[1] 曹广荣[1] 厉建国[1] 龚海辉[1] 

机构地区：[1]上海水产大学食品学院农业部冷库及制冷设备质量监督检验测试中心,上海200090

出　　处：《上海水产大学学报》2008年第2期227-231,共5页Journal of Shanghai Fisheries University

基　　金：联合国粮农组织技术援助项目(技06-41)

摘　　要：首先提出了一个冷藏库用冷风机化霜所需热量的数学计算模型,通过数据说明将冷风机化霜所需的热容量简化成单一的融化霜层所需热量的假设是合理可行的,该假设可用于快速计算冷风机所需化霜电加热量。进而通过数据对比了国产与进口品牌冷风机在以下四个指标上的区别:单位面积配置的化霜加热器功率、传热系数、单位冷量配置的化霜电加热量以及化霜电能有效利用率,上述四个指标表明国内产品在电加热化霜系统设计制造方面与国外仍存在一定的差距,分析了产生差异的原因,最后提出了冷风机性能改善的途径和今后开展研究工作的方向。An easy-to-use mathematical model to calculate the electricity energy input required by the air cooler to defrost is presented in this paper, which reasonably simplified the overall energy input required by the whole air cooler during the defrosting process to that required by the frost film on the tubes and fins. Then the performances of a typical domestic made air cooler and an imported product are compared using the following four indexes： the ratio of the electricity energy input over the surface area of the air cooler, the overall heat transfer coefficient, the ratio of the electricity energy input over the refrigeration capacity of the air cooler and the utility ratio of the defrosting electricity energy input. The comparative analysis shows that the former is inferior to the latter. The causes of these differences are analyzed and the ways to optimize the performance of the domestic made air coolers are illustrated.

关 键 词：冷风机 化霜 节能 优化 

分 类 号：U295.2[交通运输工程—交通运输规划与管理]