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Journal of Non-Equilibrium Thermodynamics

Founded by Keller, Jürgen U.

Editor-in-Chief: Hoffmann, Karl Heinz

Managing Editor: Prehl, Janett / Schwalbe, Karsten

Ed. by Michaelides, Efstathios E. / Rubi, J. Miguel

4 Issues per year


IMPACT FACTOR 2016: 1.714

CiteScore 2016: 1.38

SCImago Journal Rank (SJR) 2016: 0.402
Source Normalized Impact per Paper (SNIP) 2016: 0.886

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1437-4358
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Volume 40, Issue 3

Issues

Experimental study and first thermodynamic law analysis of a solar water heater system

Vahid Madadi
  • Corresponding author
  • Department of Chemical Engineering, Faculty of Engineering, Yasouj University, P.O. Box 75914-353, Yasouj, Iran
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/ Hamid Beheshti
  • Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, Iran
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/ Touraj Tavakoli
  • Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, Iran
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/ Amir Rahimi
  • Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, Iran
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Published Online: 2015-07-17 | DOI: https://doi.org/10.1515/jnet-2015-0001

Abstract

The performance of a pilot scale flat plate solar water heater system is investigated theoretically and experimentally. The effect of the operating conditions and characteristic factors of the collector on the system efficiency is studied. A conceptual mathematical model is developed in order to analyze the system behavior in different operating conditions by considering the physical and constructive aspects of the system. The accuracy of the model result is estimated by comparing the model results with the existing experimental data. The highest obtained system thermal efficiency is 45%, and the optimum local values for surface azimuth and tilt angles are obtained at 180 degrees from north and 33 degrees, respectively, for the constructed solar water heater in Isfahan, Iran, with the local latitude of 32.6333 N.

Keywords: Solar water heater; flat plate collector; tilt angle; azimuth angle; mathematical modeling

About the article

Received: 2015-01-07

Revised: 2015-06-12

Accepted: 2015-07-07

Published Online: 2015-07-17

Published in Print: 2015-09-01


Citation Information: Journal of Non-Equilibrium Thermodynamics, Volume 40, Issue 3, Pages 171–183, ISSN (Online) 1437-4358, ISSN (Print) 0340-0204, DOI: https://doi.org/10.1515/jnet-2015-0001.

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© 2015 by De Gruyter. Copyright Clearance Center

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