Optimization and investigation of the effect of velocity distribution of air curtains on the performance of food refrigerated display cabinets

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• 作者：XueHong Wu ; ZhiJuan Chang ; QiuYang Ma ; YanLi Lu ; XueMei Yin
• 刊名：Heat and Mass Transfer
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：52
• 期：8
• 页码：1633-1647
• 全文大小：3,567 KB
• 刊物类别：Engineering
• 刊物主题：Engineering Thermodynamics and Transport Phenomena
  Industrial Chemistry and Chemical Engineering
  Thermodynamics
  Physics and Applied Physics in Engineering
  Theoretical and Applied Mechanics
  Engineering Fluid Dynamics
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1181
• 卷排序：52

文摘

This paper focuses on improving the performance of the vertical open refrigerated display cabinets (VORDC) by optimizing the structure of deflector, which is affected by inlet velocity and velocity distribution of air curtains. The results show that the temperature of products located at the front and at the rear reduces as the increases of inlet velocity of air curtains. The increase of the inlet velocity of air curtains can strengthen the disturbance inside the VORDC, and also decrease the temperature of products inside the VORDC; the increase of the outer velocity of air curtain will exacerbate the disturbance outside the VORDC and decrease air curtain’s performance. The present study can provide a theoretical foundation for the design of VORDC.List of symbols\(a\)Absorption rate\(C_{\mu }\)Coefficient in K-\(\varepsilon\)\(G_{K}\)Generation of turbulence kinetic energy\({\rm I}\)Directional radiation intensityKTurbulence kinetic energySGeneralized source termTTemperature, [K or °C]uVelocity component in X-direction, velocity (m s−1)vVelocity component in Y-direction, velocity (m s−1)VVelocity vector