上海交通大学学报(自然版) ›› 2011, Vol. 45 ›› Issue (09): 1384-1388.

• 一般工业技术 • 上一篇    下一篇

卧式陈列柜风幕热卷吸系数的关联式模型

余克志1,丁国良2,陈天及1   

  1. (1. 上海海洋大学 制冷工程系, 上海 201306;2. 上海交通大学 制冷与低温工程研究所, 上海 200240)
  • 收稿日期:2009-10-09 出版日期:2011-09-30 发布日期:2011-09-30
  • 基金资助:

    上海海洋大学博士启动基金项目(A2400100134), 上海市教育委员会重点学科建设项目(J50704), 上海市科学技术委员会“创新行动计划”项目(09dz1202400)

A Correlation Model of Thermal Entrainment Factor for Air Curtain in Horizontal Display Cabinet

 YU  Ke-Zhi-1, DING  Guo-Liang-2, CHEN  Tian-Ji-1   

  1. (1. Department of Refrigeration Engineering, Shanghai Ocean University, Shanghai 201306, China;2. Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2009-10-09 Online:2011-09-30 Published:2011-09-30

摘要: 通过无量纲变换,表明陈列柜风幕的热卷吸系数与4个无量纲量有关,即反映风幕送风影响因素的雷诺数、反映环境影响因素的理查逊数、反映风幕结构影响因素的2个无量纲数.在计算流体力学模拟计算结果的基础上,建立了卧式陈列柜风幕热卷吸系数的关联式模型,并将关联式模型计算所得热卷吸系数与其实测值进行对比.结果表明,采用关联式模型计算所得卧式陈列柜风幕的热卷吸系数的可靠性较好,计算结果与相应的实验测试结果之间的最大偏差和平均偏差分别为11.7%和-0.6%.

关键词: 陈列柜, 风幕, 热卷吸系数, 关联式模型, 计算流体力学

Abstract: From dimensionless transformation, the thermal entrainment factor (TEF) for air curtain in a horizontal display cabinet is dependent on four dimensionless numbers: Reynolds number indicating effect of air curtain supply parameters, Richardson number indicating effect of ambient parameter and two other dimensionless numbers indicating effect of air curtain geometry parameters. The correlation model of TEF for air curtain in a horizontal display cabinet was developed based on the computational fluid dynamics (CFD) simulation results, and the TEF calculated by the correlation model was compared with the measurement. The results show that the reliability validation of correlation model is good. The TEF of display cabinet predicted by the correlation model gives a maximum deviation of 11.7% and a mean deviation of -0.6% compared with the published experimental data.

Key words: display cabinet, air curtain, thermal entrainment factor, correlation model, computational fluid dynamics (CFD)

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