Heat transfer performance of a confined single slot jet of air impinging on a flat surface

被引：54
|
作者：
Zukowski, Miroslaw [1 ]
机构：
[1] Bialystok Tech Univ, Fac Civil Engn & Environm Engn, Dept Heat Engn, PL-15351 Bialystok, Poland
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2013年 / 57卷 / 02期
关键词：
Air solar collector; Jet impingement technique; Confined impinging slot jet; Heat transfer; Multiple regression method; IMPINGEMENT; PLATE; NOZZLE; FLOW;
D O I：
10.1016/j.ijheatmasstransfer.2012.10.069
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the present work, results of an experimental study are shown. The aim of the study was to determine the thermal performance of a confined impinging slot jet of air. Influence of nozzle width B, Reynolds number and nozzle to plate spacing H/B on the Nusselt number was investigated. Graphs showing lateral variation of the local Nusselt number on the impinging surface for selected experimental runs are presented. The results of the investigations shall help to develop an optimal model of air solar collector, the construction of which uses impinging slot jets. The Lx parameter that allows to determine the region with increased intensity of heat transfer was introduced. Mean Nusselt number Nu(Lx) for this region was determined. For both parameters, correlation functions of Reynolds number, B and H/B were developed using multiple regression method. In the article, graphs that allow assessment of statistical analysis quality are presented. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：484 / 490
页数：7
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