高温CO_2冷风机的数值计算

详细信息    查看官网全文

• 英文论文题名：Numerical Calculation of CO_2 Air Cooler under High Temperature Conditions
• 论文作者：申江 ; 黄冰
• 英文论文作者：Shen Jiang ; Huang Bing ; TianJin Key Lab of Refrigeration Technology ; TianJin University of Commerce
• 年：2014
• 作者机构：天津商业大学天津市制冷技术重点实验室;
• 论文关键词：分布参数模型 ; 冷风机 ; 仿真计算
• 英文论文关键词：Distributed parameter model ; Air cooler ; Simulation calculation
• 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
• 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：5
• 文件大小：289k
• 原文格式：O
• 会议级别：全国

摘要

本文用分布参数法建立数学模型,对CO_2冷风机在高温工况下进行仿真模拟计算。分析计算了管内制冷剂侧的传热特性,以及管间距与翅片间距对换热系数和压降的影响。结果表明,由于随着干度的增加,管内CO_2流型不断发生变化,管内侧换热系数和压降也随之变化。在设计冷风机时,应综合考虑翅片间距与管间距对冷风机总换热系数及空气侧压降的影响。
In this paper,numerical simulation of CO_2 air cooler under high temperature condition is carried with the mathematical model constructed using distribute parameter method.The heat transfer characteristic of the refrigerant-side inside the tube is analyzed,along with the influence on heat transfer parameters and pressure drop with the change of the tube spacing and fin spacing.The results indicates that,with me increase of the dryness,the flow pattern of the CO_2 inside the tube keeps changing,along with the heat transfer parameter inside the tube and the pressure drop.The influence of fin spacing and tube spacing on the total heat transfer parameter and air-side's pr-essure drop should be taken into consideration while designing the construction of the air cooler.

引文

[1]李丽霞,姬长发,赵文秀.CO_2制冷系统的技术进展.应用能源技术,2008
    [2]丁国良,张春路.制冷空调装置仿真与优化[M].北京:科学出版社,2001.
    [3]Lixin Cheng,John R.Thome,New prediction methods for C02 evaporation inside tubes:Part I-A two-phase flow pattern map and a flow pattern based phenomenological model for two-phase flow frictional pressure drops[J],International Journal of Heat and Mass Transfer 51(2008)111-124
    [4]Lixin Cheng,John R.Thome,New prediction methods for C02 evaporation inside tubes:PartⅡ—A two-phase flow pattern map and a flow pattern based phenomenological model for two-phase flow frictional pressure drops[J],International Journal of Heat and Mass Transfer 51(2008)125-135
    [5]陈圣光,CO_2热泵管翅式蒸发器的模拟优化与试验研究,中原工学院,2012
    [6]袁玉玲.翅片管换热器流程布置的数值计算与优化.华南理工大学.2011
    [7]吴业正,韩宝琦.制冷原理及设备(第2版)[M].西安:西安交通大学出版社,1997,238-239.
    [8]范晓伟,付光轩,龚毅.二氧化碳管内流动与换热研究现状及展望[J].中原工学院学报,2003,12(03):7-10
    [9]杨亮,丁国良,黄东平,等.亚临界二氧化碳换热特性研究进展[J].制冷学报,2003,(04):28-34
    [10]李君.翅片管式蒸发器的仿真与实验研究[D].杭州:浙江大学,2005.
    [11]黄冬平,梁贞潜,丁国良,等.基于模型的二氧化碳微通道气体冷却器性能分析[J].化工学报,2002,53(8):833-836.
    [12]范晓伟,张仙平,王凤坤,等.基于分布参数模型的CO_2蒸发器结构参数研究[J].低温与超导,2008,36(8):63-69.
    [13]杨俊兰,马一太,李敏霞.CO_2蒸发器的性能模拟与优化计算[J].河北工业大学学报,2011,40(3):35-39.
    [14]Yun Rin,Kim Yong chan,Park Chasik.Numerical analysis on a micro-channel evaporator designed for CO_2 air-conditioning systems[J].Applied Thermal Engineering,2007,27(8):1320-1326.
    [15]Yoon,Cho,Yun,Characteristics of evaporative heat transfer and pressure drop of carbon dioxide and correlation development,International Journal of Refrigeration 27(2004)111-119
    [16]John R.Thome,JeanElHajal,Flow boiling heat transfer to carbon dioxide:general prediction method,International Journal of Refrigeration 27(2004)294-301
    [17]L.Cheng,G.Ribatski,L.Wojtan,J.R.Thome,Erratum to:New flow boiling heat transfer model and flow pattern map for carbon dioxide evaporating inside tubes,Heat Mass Transfer 49(21-22)(2006)4082-4094,
    [18]R.Yun,Y.Kim,M.S.Kim,Flow boiling heat transfer of carbon dioxide in horizontal mini tubes,Int.J.Heat Fluid Flow 26(2005)801-809.
    [19]刘斌,苏芸,蔡景辉,CO_2冷风机的设计优化,走中国创造之路——2011中国制冷学会学术年会论文集,2011
    [20]刘斌,苏芸等,直接供液CO_2冷风机的设计优化[J].制冷学报.2012,22-25