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research-article

The Research of Temperature Fields in the Proximity of Abundle of Heated Pipes Arranged Above Each Other

[+] Author and Article Information
Jozef Cernecky

Professor Faculty of Environmental and Manufacturing Technology Technical University in Zvolen Studentska 26, 960 53 Zvolen Slovakia, Europe
cernecky@tuzvo.sk

Zuzana Brodnianska

Teacher Faculty of Environmental and Manufacturing Technology Technical University in Zvolen Studentska 26, 960 53 Zvolen Slovakia, Europe
zuzana.brodnianska@tuzvo.sk

Przemysław Błasiak

Assistant professor Faculty of Mechanical and Power Engineering Wroclaw University of Science and Technology Wybrzeże Wyspiańskiego 27, 50-370 Wrocław Poland, Europe
przemyslaw.blasiak@pwr.edu.pl

Jan Koniar

Teacher Faculty of Environmental and Manufacturing Technology Technical University in Zvolen Studentska 26, 960 53 Zvolen Slovakia, Europe
koniar@tuzvo.sk

1Corresponding author.

ASME doi:10.1115/1.4036041 History: Received June 03, 2016; Revised February 10, 2017

Abstract

The paper deals with the research of temperature fields in the proximity of heated pipes arranged above each other in natural air convection. The holographic interferometry method was used for the visualization of temperature fields. The experiments were made for pipes having the diameter of 20 mm, length 200 mm at surface temperatures of 40°C, 50°C and 60°C, with the vertical arrangement of pipes as well as with the horizontal shift of their centers by 1/4D and 1/2D.Temperature profiles were determined from experimentally obtained images of temperature fields and the local parameters of heat transfer were calculated. Under the same marginal and geometric conditions, CFD simulations of temperature fields were performed as well, while the results (temperature fields, local and mean parameters of heat transfer) were also calculated for various distances between the pipe centers (1D, 2D and 3D). From the obtained experimental results and CFD simulation results, it is possible to observe the impact of the arrangement and spacing of pipes on heat transfer parameters. The achieved results imply the change in the spacing of pipes has a greater impact on heat transfer parameters in the bundle of heated pipes located above each other than a moderate horizontal shift of their centers.

Copyright (c) 2017 by ASME
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