冷库空气幕参数对其性能影响的数值研究
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- 英文论文题名：Numerical Research of effect of Impact Factors on the Air Curtain Performance in Cold Stores
- 论文作者：谢晶 ; 缪晨 ; 杜子峥 ; 朱进林
- 英文论文作者：XIE Jing ; MIAO Chen ; DU Zizheng ; ZHU Jinlin ; College of food science and technology ; Shanghai Ocean University ; Shanghai Engineering Research Center of aquatic-Product Processing & Preservation
- 年：2014
- 作者机构：上海海洋大学食品学院上海水产品加工及贮藏工程技术研究中心;
- 论文关键词：冷库 ; 空气幕 ; 影响参数 ; 性能 ; 数值模拟
- 英文论文关键词：cold store ; air curtain ; impact factors ; performance ; numerical simulation
- 会议召开时间：2014-11-27
- 会议录名称：第九届全国食品冷藏链大会暨第六届全国冷冻冷藏产业创新发展年会论文集
- 语种：中文
- 分类号：TB657;TS205.7
- 学会代码：GDKL
- 会议名称：第九届全国食品冷藏链大会暨第六届全国冷冻冷藏产业创新发展年会
- 会议地点：中国广东广州
- 主办单位：中国制冷学会、国内贸易工程设计研究院
- 学会名称：广东省科学技术协会科技交流部
- 页数：8
- 文件大小：1579k
- 原文格式：O
- 会议级别：全国
摘要
为了进一步提高冷库空气幕的隔离性能,维持库内控温稳定的要求。本文以一个实际冷库为试验对象,建立了包含冷库内部、冷库空气幕和库外环境在内的三维耦合数值模型,采用CFD数值模拟软件对冷库空气幕流场进行非稳态数值模拟,并对冷库温度场进行了试验测量,重点分析了冷库空气幕的送风速度、送风角度和喷口宽度等参数对冷库空气幕隔离性能的影响规律。结果表明,对于某个具体的冷库,存在最合理的送风速度和送风角度,使冷库空气幕的隔离性能达到最佳,库内温度场波动最小。冷库空气幕喷口宽度不宜选择太宽。本文研究的冷库空气幕最佳的送风速度为8m/s,最佳的送风角度为向冷库外侧偏转15度,最佳的喷口宽度为0.04m。
In order to further improve the performance of air curtain for maintaining the low temperature in cold stores.The environment inside the cold store,the air curtain and the environment outside the cold store were solved together in a coupled way in this research.The unsteady simulation of flow field of the air curtain in the cold store was taken by CFD software and the change of temperature inside the cold store was measured.The effects of supply velocities,supply angles and jet width of the air curtain on its performance were analyzed under the condition that the door and the air curtain opened simultaneously.The results reflected that there existed an optimal supply velocity and supply angle of the air curtain at which the air curtain had a best performance and the temperature inside the cold store was uniform.The jet width shouldn't be too large for a better performance of the air curtain.The optimal supply velocity,supply angle and jet width of the air curtain in this study were 8 m/s,15°and 0.04 m,respectively.
In order to further improve the performance of air curtain for maintaining the low temperature in cold stores.The environment inside the cold store,the air curtain and the environment outside the cold store were solved together in a coupled way in this research.The unsteady simulation of flow field of the air curtain in the cold store was taken by CFD software and the change of temperature inside the cold store was measured.The effects of supply velocities,supply angles and jet width of the air curtain on its performance were analyzed under the condition that the door and the air curtain opened simultaneously.The results reflected that there existed an optimal supply velocity and supply angle of the air curtain at which the air curtain had a best performance and the temperature inside the cold store was uniform.The jet width shouldn't be too large for a better performance of the air curtain.The optimal supply velocity,supply angle and jet width of the air curtain in this study were 8 m/s,15°and 0.04 m,respectively.
引文
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[9]Foster A M,Swain M J,Barrett R,et al.Effectiveness and optimum jet velocity for a plane jet air curtain used to restrict cold room infiltration[J].International Journal of Refrigeration,2006,29(5):692-699.
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[15]谢晶,瞿晓华,徐世琼.冷藏库内气体流场数值模拟与验证[J].农业工程学报,2005,21(2):11-16.Xie J,Qu X H,Xu S Q.Numerical simulation and verification of airflow in cold-store[J].Transactions of CSAE,2005,21(2):11-16.
[16]王彤,谷传纲,杨波,等.非定常流动计算的PISO算法[J].水动力学研究与进展,2003,18(2):233-239.Wang T,Gu C G,Yang B,et al.PISO alogrithm for unsteady flow field[J].Journal of hydrodynamics,2003,18(2):233-239.
[17]缪晨,谢晶.冷库空气幕流场的非稳态数值模拟及验证[J].农业工程学报,2013,29(7):246-253.Miao C,Xie J.Unsteady state numerical simulation and verification of flow field of air curtain in cold stores[J].Transactions of the Chinese Society of Agricultural Engineering,2013,29(7):246-253.
[18]陈洁,张娅妮,陈蕴光,等.卧式陈列柜风幕的数值分析[J].制冷与空调,2007,7(3):36-39.Chen J,Zhang Y N,Chen Y G,et al.Numerical simulation of the air curtain of horizontal display cases[J].Refrigeration and air-conditioning,2007,7(3):36-39.
[19]杨彦宾.热压和风压作用下冷库大门空气幕性能的数值研究[D].西安:西安建筑科技大学,2009.Yang Yanbin.Numerical study of the air curtain performance of a cold store with wind and thermal pressures[D].Xi'an:Xi'an University of Architecture&Technology,2009.
[20]Eric B L,Ronald H H.Energy savings using air curtains in stalled in high-traffic doorways[J].Ashrae Transactions,1995,101(2):136-143.
[2]黄敏.冷库的节能方法[J].中小企业管理与科技,2010(7):190.Huang M.Energy-saving method of cold store[J].Small and Medium-Sized Enterprise Management and Technology,2010(7):190.
[3]Neto L P C,Silva M C G,Costa J J.On the use of infrared thermography in studies with air curtain devices[J].Energy and Building,2006,38(10):1194-1199.
[4]管天,陈天及.立式开式陈列柜风幕送风速度对其温度分布影响的实验研究[J].制冷与空调,2006,6(2):64-67.Guan T,Chen T J.Experimental study of the impact of the air-curtain outlet velocity on the temperature distribution for display case[J].Refrigeration and air-conditioning,2006,6(2):64-67.
[5]汪澍,金龙哲,栗婧,等.救生舱空气幕—氧化碳阻隔性能研究[J].建井技术,2011,32(1/2):55-57,92.Wang P,Jin L Z,Su Q,et al.Research on performance of obstructing carbon monoxide of air curtain used in lifesaving cabin[J].Mine construction technology,2011,32(1/2):55-57,92.
[6]Chen Y G Parametric evaluation of refrigerated air curtains for thermal insulation[J].International Journal of Thermal Sciences,2009,48(10):1988-1996.
[7]王海宁,王花平.矿用空气幕数值模拟研究[J].中国钨业,2009,24(4):13-16.Wang H N,Wang H P.The Numerical Simulation Research of Mining Air Curtain[J].China Tungsten Industry,2009,24(4):13-16.
[8]南晓红,何媛,刘立军.冷库门空气幕性能的影响因素[J].农业工程学报,201 1,27(10):334-338.Nan X H,He Y,Liu L J.Impact factors of air curtain performance in cold storefJ].Transactions of the CSAE,2011,27(10):334-338.
[9]Foster A M,Swain M J,Barrett R,et al.Effectiveness and optimum jet velocity for a plane jet air curtain used to restrict cold room infiltration[J].International Journal of Refrigeration,2006,29(5):692-699.
[10]Foster A M,Swain M J,Barrett R,et al.Three-dimensional effects of an air curtain used to restrict cold room infiltration[J].Applied Mathematical Modelling,2007(6),31:1 109-1 123.
[11]陶文铨.计算流体力学与传热学[M].北京:中国建筑工业出版社,1991,3-34.Tao W Q.Computational fluid mechanics and heat transfer[M].Beijing:China Architecture&Building Press,1991,3-34.
[12]陶文铨.数值传热学[M].西安:西安交通大学出版社,2002,10-40.Tao W Q.Numerical Heat Transfer[M].Xi'an:Xi'an Jiaotong University Press,2002,10-40.
[13]Foster A M,Swain M J,Barrett R.Experimental verification of analytical and CFD predictions of infiltration through cold store entrances[J].International Journal of Refrigeration,2003,26(8):918-925.
[14]李鹏飞,徐敏义,王飞飞.精通CFD工程仿真与案例实战[M].北京:人民邮电出版社,2011,1-241.Li P F,Xu M Y,Wang F F.Proficient in CFD engineering simulation and case of actual combat[M].Beijing:Post&Telecom Press,2011,1-241.
[15]谢晶,瞿晓华,徐世琼.冷藏库内气体流场数值模拟与验证[J].农业工程学报,2005,21(2):11-16.Xie J,Qu X H,Xu S Q.Numerical simulation and verification of airflow in cold-store[J].Transactions of CSAE,2005,21(2):11-16.
[16]王彤,谷传纲,杨波,等.非定常流动计算的PISO算法[J].水动力学研究与进展,2003,18(2):233-239.Wang T,Gu C G,Yang B,et al.PISO alogrithm for unsteady flow field[J].Journal of hydrodynamics,2003,18(2):233-239.
[17]缪晨,谢晶.冷库空气幕流场的非稳态数值模拟及验证[J].农业工程学报,2013,29(7):246-253.Miao C,Xie J.Unsteady state numerical simulation and verification of flow field of air curtain in cold stores[J].Transactions of the Chinese Society of Agricultural Engineering,2013,29(7):246-253.
[18]陈洁,张娅妮,陈蕴光,等.卧式陈列柜风幕的数值分析[J].制冷与空调,2007,7(3):36-39.Chen J,Zhang Y N,Chen Y G,et al.Numerical simulation of the air curtain of horizontal display cases[J].Refrigeration and air-conditioning,2007,7(3):36-39.
[19]杨彦宾.热压和风压作用下冷库大门空气幕性能的数值研究[D].西安:西安建筑科技大学,2009.Yang Yanbin.Numerical study of the air curtain performance of a cold store with wind and thermal pressures[D].Xi'an:Xi'an University of Architecture&Technology,2009.
[20]Eric B L,Ronald H H.Energy savings using air curtains in stalled in high-traffic doorways[J].Ashrae Transactions,1995,101(2):136-143.