罗超,黄兴华,陈江平
LUO Chao,HUANG Xing-hua,CHEN Jiang-ping(Shanghai Jiaotong University

• 1:上海交通大学
• 2:上海交通大学
• 3:上海交通大学 上海200240
• 4:上海200240

摘要(Abstract)：

在低温工况下(-18℃),对一小型间冷式制冷装置的变间距翅片管蒸发器在结霜工况下的动态性能进行了实验研究,考察了进口空气温度、空气相对湿度和空气风速对蒸发器性能的影响,给出了换热量、空气侧压降、结霜量和总传热系数在结霜过程中的动态变化规律。实验结果表明在低温工况下,不同的环境参数对结霜的影响差别较大。结果可为优化环境参数,使制冷系统达到节能匹配提供参考。
The dynamic performance of a finned-tube evaporator of a small-scale refrigeration installation with a indirect cooling in the frosting process was experimentally studied under low temperature conditions(-18℃).The effects of the frontal air velocity,inlet air humidity on the performance of the evaporator were revealed.The dynamic variation law of the refrigerating capacity,air side pressure drop,frost weight and the overall heat transfer coefficient of the evaporator in the frosting process was presented.It was showed that different condition factors have distinct effects on the frosting.The experiment results provide important basis for the application of the condition factors and the economical matching of the refrigeration system.

关键词(KeyWords)： 间冷式;结霜;翅片管蒸发器;性能
indirect cooling;frost;finned-tube evaporator;performance

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 罗超,黄兴华,陈江平
LUO Chao,HUANG Xing-hua,CHEN Jiang-ping(Shanghai Jiaotong University

参考文献(References)：

• [1]吴晓敏,单小丰,王维城,等.冷表面结霜的微细观可视化研究[J].清华大学学报(自然科学版)2003,43(10):1437-1440.
• [2]吴晓敏,李瑞霞,王维城.强制对流条件下结霜现象的实验研究[J].清华大学学报(自然科学版),2006,46(5):682-686.
• [3]郭宪民,王成生,汪伟华,等.结霜工况下空气源热泵动态特性的数值模拟与实验验证[J].西安交通大学学报,2006,40(5):544-548.
• [4]张哲,厉彦忠,王强.影响风冷式热泵蒸发器结霜性能因素的研究[J].流体机械,2002,30(11):47-49.
• [5]刘凤珍,陈焕新,符建坤.低温工况下翅片管换热器结霜特性研究[J].流体机械,2002,30(11):54-57.
• [6]周振宇,夏清,周兴禧.翅片管式蒸发器结霜问题的数值分析与实验研究[J].上海交通大学学报,1998,32(7):28-31.
• [7]刘凤珍,陈焕新.影响翅片管换热器结霜因素研究[J].低温工程,2000,116(4):45-48.
• [8]Horuz I,Kurem E,Yamankaradeniz R.Experimentaland theoretical performance analysis of air-cooledplate-finned-tube evaporators[J].Int.Comm.HeatMass Transfer.1998,25(6):787-798.
• [9]Wei-Mon Yan,Hung-Yi Li,Yeun-Jong Wu,et al.Performance of finned tube heat exchangers operatingunder frosting conditions[J].International Journal ofHeat and Mass Transfer,2003,46:871?877.
• [10]Rite R W,Craw ford R R.The effect of frost accumu-lation on the performance of domestic refrigerator-freezer finned-tube evaporator coils[J].ASHRAETransactions,1991,97(2):428-437.
• [11]Hong Chen,Leena Thomas and Robert W Besant.Fan supplied heat exchanger fin performance underfrosting conditions[J].International Journal of Re-frigeration,2003,(26):140 149.
• [12]Derya Burcu Ozkan,Eralp Ozil.Experimental studyon the effect of frost parameters on domestic refrigera-tor finned tube evaporator coils[J].Applied ThermalEngineering,2006,26:2490?249.