Experiments on the Transfer Characteristics of a Corrugated Fin and Tube Heat Exchanger Configuration
Experiments on the Transfer Characteristics of a Corrugated Fin and Tube Heat Exchanger Configuration
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DOI：
10.1115/1.3450464
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发表时间：
1976-02
影响因子：
--
通讯作者：
L. Goldstein;E. Sparrow
中科院分区：
文献类型：
--
作者：
L. Goldstein;E. Sparrow
局部和平均空气侧传递系数已被测量为一排波纹翅片和管换热器配置。通过热质传递类比结合萘升华技术完成测量。局部传递系数揭示了几个涡系的存在，这些涡系随着雷诺数的增加而被激活和加强。涡流的作用是增大传递系数。波纹壁面的迎风或背风方向被发现对传输特性有决定性的影响，迎风面上的传输速率明显较高。平均传递系数进行了比较与相应的平面壁换热器配置。比较结果表明，波纹翅片表面的强化作用随雷诺数的增加而增加。在雷诺数为1000时，波纹翅片系统的平均系数比平面翅片系统的平均系数大约45%。
Local and average air-side transfer coefficients have been measured for a one-row corrugated fin and tube heat exchanger configuration. The measurements were accomplished via the heat-mass transfer analogy in conjunction with the naphthalene sublimation technique. The local transfer coefficients revealed the presence of several vortex systems which are activated and strengthened with increasing Reynolds number. The vortices serve to augment the transfer coefficients. The windward or leeward orientation of the facets of the corrugated wall was found to have a decisive effect on the transfer characteristics, with appreciably higher transfer rates prevailing on the windward facets. The average transfer coefficients were compared with those for a corresponding plane-walled heat exchanger configuration. The comparison showed that the augmentation due to the corrugated fin surface increased with Reynolds number. At a Reynolds number of 1000, the average coefficient for the corrugated fin system was about 45 percent greater than that for the plane fin system.