THERMAL SCIENCE

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Adel Laaraba

NUMERICAL STUDY OF HEAT TRANSFER IN A FLAT PLAT THERMAL SOLAR COLLECTOR WITH PARTITIONS ATTACHED TO ITS GLAZING

ABSTRACT
Heat transfer in the air gap of an horizontal flat plat thermal solar collector contain partitions attached to its glazing has been studied numerically. The absorber and the glazing are kept at constant and different temperatures, while the vertical walls (insulation) were kept adiabatically. A conjugate formulation was used for mathematical formulation of the problem and a computer program based on the control volume approach and the SIMPLER algorithm was used. The main aim of the current paper is to study numerically the effects of number of fins and their length on the air pattern and heat transfer. It was observed that the heat transfer rate through the air gap is affected greatly and hence can be controlled by the number of attached fins to the glazing of the solar collector as well as the fin lengths, and the addition of partitions reduces the heat losses by convection by 90%.
KEYWORDS
thermal solar collector, partitions, fluent, natural convection, thermal radiation, efficiency
PAPER SUBMITTED: 2017-05-31
PAPER REVISED: 2018-01-25
PAPER ACCEPTED: 2018-03-12
PUBLISHED ONLINE: 2018-04-28
DOI REFERENCE: https://doi.org/10.2298/TSCI170531101L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 2, PAGES [1075 - 1084]
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Numerical study of heat transfer in a flat plat thermal solar collector with partitions attached to its glazing

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