Theoretical Model and Experimental Research on Multiple Micro-channel Parallel Flow Condenser

Abstract

Abstract:

The theoretical model of the multiple micro-channel parallel flow condenser was established based on the method of distribution parameters. The formula of air side friction was summarized based on the experiment with variable conditions. The impact of air velocity, inlet air temperature and refrigerant mass flow rate on heat exchange capacity and pressure drop of condenser were analyzed. The calculated results of the model were compared with the experimental data, which showed a good agreement in changing trend and verified the correctness of the model. Its maximum error was 9.759%. This paper can provide reference for the structure optimization of multiple micro-channel parallel flow condensers and the performance analysis of heat exchangers.

Key words: multiple micro-channel, parallel flow, theoretical model, experimental research

CLC Number:

TK 124

ZHANG Ping1,GU Bo1，WANG Ting1,ZHAO Pengcheng2,MA Hongtao2. Theoretical Model and Experimental Research on Multiple Micro-channel Parallel Flow Condenser[J]. Journal of Shanghai Jiaotong University, 2013, 47(11): 1738-1744.

References

［1］麻友良.汽车空调技术［M］.北京：机械工业出版社，2009.

［2］Davenport C J. Heat transfer and fluid flow in the louvered fin triangular ducts ［D］.CNAA: Lanchester Polytechnic,1980.

［3］Yang C Y, Webb R L. Condensation of R12 in small hydraulic diameter extruded aluminum tubes with and without microfins ［J］. International Journal of Heat Mass Transfer, 1996, 39(4):791800.

［4］Yang C Y, Webb R L. Friction pressure drop of R12 in small hydraulic diameter extruded aluminum tubes with and without microfins ［J］. International Journal of Heat Mass Transfer, 1996, 39(4):801809.

［5］包涛，董玉军，周翔，等.平流式冷凝器传热流道性能理论研究［J］.制冷与空调，2004,4（5）：2831.

BAO Tao, DONG Yujun, ZHOU Xiang, et al. Theoretical study on the heat transfer and flow characteristics of the parallel flow type condenser［J］. Refrigeration and AirConditioning, 2004,4(5):2831.

［6］邵世婷，王文.微型通道冷凝器数值模拟与分析［J］.上海交通大学学报，2009,43（2）：251255.

SHAO Shiting, WANG Wen.Numerical simulation and analysis of microchannel condenser［J］. Journal of Shanghai Jiaotong University, 2009,43(2)：251255.

［7］彭明，张雪平.平流式冷凝器模拟计算及试验研究［J］.制冷与空调，2008,22（1）：611.

PENG Ming, ZHANG Xueping.Mathematical description and experimental investigation on parallelflow type condenser［J］. Refrigeration and AirConditioning,2008,22(1):611.

［8］Dittus S J,Boelter L M K. Heat transfer in automobile radiators of the tubular type［J］. University of California Publication on Engineering,1930(2):443461.

［9］王荣汉，蔡亮，蔡华林，等.扁管分配布置方式对平流式冷凝器换热性能影响［J］.建筑热能通风空调,2010,29(4):3740.

WANG Ronghan, CAI Liang, CAI Hualin, et al. Effect of tubes distribution on efficiency of parallelflow type condenser［J］. Building Energy & Environment, 2010,29(4):3740.

［10］吴业正.制冷原理及设备［M］.西安：西安交通大学出版社，2010.

［11］Chang Y J, Wang C C. A generalized heat transfer correlation for louver fin geometry［J］.

International Journal of Heat and Mass Transfer,1997,40(3):533544.

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