|本期目录/Table of Contents|

[1]顾海龙,许辉,张红.热管式太阳能集热器联集管内流动与传热特性[J].南京工业大学学报(自然科学版),2016,38(06):124-129.[doi:10.3969/j.issn.1671-7627.2016.06.021]
 GU Hailong,XU Hui,ZHANG Hong.Flow behavior and heat transfer characteristic of heat-pipe type solar collector[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(06):124-129.[doi:10.3969/j.issn.1671-7627.2016.06.021]
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热管式太阳能集热器联集管内流动与传热特性()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年06期
页码:
124-129
栏目:
出版日期:
2016-11-15

文章信息/Info

Title:
Flow behavior and heat transfer characteristic of heat-pipe type solar collector
文章编号:
1671-7627(2016)06-0124-06
作者:
顾海龙12许辉1张红13
1.南京工业大学 能源学院,江苏 南京 211800; 2.江苏省特种设备安全监督检验研究院无锡分院,江苏 无锡 214174; 3.常州工学院,江苏 常州 213002
Author(s):
GU Hailong12XU Hui1ZHANG Hong13
1.College of Energy,Nanjing Tech University,Nanjing 211800,China; 2.Branch of Wuxi,Jiangsu Province Special Equipment Safety Supervision Inspection,Wuxi 214174,China; 3.Changzhou Technology Institute,Changzhou 213002,China
关键词:
联集管 流动特性 传热特性 数值模拟
Keywords:
water header flow behaviour heat transfer characteristic numerical simulation
分类号:
TK515
DOI:
10.3969/j.issn.1671-7627.2016.06.021
文献标志码:
A
摘要:
为了获得结构参数与联集管内流动传热特性之间的关系,建立了热管式太阳能集热器联集管的数值模型并进行模拟。结果表明:在本文的研究范围内,在保证集热器集热量和联集管直径不变的条件下,减小套管直径,努赛尔数(Nu)变化不大,而摩擦因数(f)由大变小,因此若不考虑热管性能,则套管直径越小越好; 当套管直径保持不变时,随着联集管直径的减小,Nu数和f都越来越大,因此存在优化关系; 当保证换热面积不变的条件下,减小联集管直径并且增大套管直径时,Nu数先增大后保持不变,f越来越大,此时,联集管直径和套管直径存在优化的匹配问题,上述优化问题须结合集热器成本、系统压降需求等做进一步研究。对比发现,换热面积保持不变时,套管与冷却水之间的对流换热系数更高。
Abstract:
To investigate the flow behavior and heat transfer characteristic of the solar collector with different diameters of casing and water header,the numerical model of water header in the heat-pipe type solar collector was established.Results showed that when the solar collector absorbed the same heat,the Nusselt number changed little and the friction coefficient decreased with the decreasing of casing diameter and the water header diameter remaining the same.The casing diameter could be smaller with no considering the performance of heat pipe.With the decreasing of the water header diameter and the casing diameter remaining the same,both Nusselt number and the friction coefficient increased.When the heat exchange area remained constant,with the decreasing of the water header diameter and the increasing of the casing diameter,Nusselt number increased first and then kept constant,but the friction coefficient increased constantly.So there was an optimal relationship between the water header and the casing.By comparison,the convective heat transfer coefficient between the casing and cooling water was higher when the heat transfer area remained constant.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-05-14
作者简介:顾海龙(1989—),男,江苏如皋人,硕士,主要研究方向为高效传热传质设备及新能源; 许辉(联系人),副教授,E-mail:xuhui2762@126.com.
引用本文:顾海龙,许辉,张红.热管式太阳能集热器联集管内流动与传热特性[J].南京工业大学学报(自然科学版),2016,38(6):124-129..
更新日期/Last Update: 2016-12-20