THERMAL SCIENCE

International Scientific Journal

Aleksandar Nešović

,

Nebojša Lukić

,

Dragan Z. Cvetković

,

Miljan R. Marasević

,

Marko D. Topalović

THEORETICAL AND NUMERICAL ANALYSIS OF THE FIXED FLAT-PLATE SOLAR COLLECTOR WITH SN-AL2O3 SELECTIVE ABSORBER AND GRAVITY WATER FLOW

ABSTRACT
This paper presents two methods (theoretical and numerical) for the thermal analysis of the previously experimentally installed solar collector construction at the Faculty of Engineering in Kragujevac – a fixed flat-plate solar collector with Sn-Al2O3 selective absorber and gravity water flow. The theoretical research was based on the application of a specific calculation algorithm with a triple iterative procedure, i.e. with a three-stage check of all important performance indicators of the fixed flat-plate solar collector. In the numerical phase of the research, simple linear regression was applied to experimentally measured values of solar radiation intensity and experimentally determine values of heat power to form simple equations that could be used to predict the thermal performance of similar solar structures in the future. The results of theoretical and numerical studies showed agreement with experimental studies, because in the first case, the absolute measurement error was less than 10%, while in the second case, the determination coefficient was greater than 90%, so the authors hope that this work will be useful to the wider scientific community.
KEYWORDS
Fixed flat-plate solar collector, Gravity water flow, numerical model, Results validation, Sn-Al2O3 selective absorber, theoretical model
PAPER SUBMITTED: 2023-02-25
PAPER REVISED: 2023-03-09
PAPER ACCEPTED: 2023-04-05
PUBLISHED ONLINE: 2023-05-13
DOI REFERENCE: https://doi.org/10.2298/TSCI230225100N
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 5, PAGES [3687 - 3700]
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Theoretical and numerical analysis of the fixed flat-plate solar collector with Sn-Al2O3 selective absorber and gravity water flow

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence