Effect of the Number of Nozzles of Swirl Flow Generator Utilized in Flat Plate Solar Collector: An Entropic Analysis release_tas3fgtxqnajvbwu37qc45e7vq

by Yan Cao, Dr. Eng. Hamdi Ayed, Tuqa Abdulrazzaq, Taza Gul, Abdul Bariq, Belgacem Bouallegue

Published in International Journal of Photoenergy by Hindawi Limited.

2021   Volume 2021, p1-10


The numerical model of the pipes of a flat plate solar collector (FPSC) with several nozzles has been investigated in the present study. Indeed, the effect of the number of nozzles of the swirl generator on the entropic characteristics has been evaluated. The nozzles were applied for improving the performance of FPSC. For evaluating the proposed system based on the entropy concept, the effect of injection angle and mass flow rate has been considered. The selected injection angles were 30°, 45°, 60°, and 90°. Also, the total mass flow rates entered from all of the nozzles were 0.2 kg/s, 1 kg/s, and 2 kg/s. The effect of said variables on frictional and thermal entropy generations was analyzed; then, the overall energetic-entropic performance of the system was predicted using several dimensionless parameters including NE, NS, Nu<jats:inline-formula> <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <msup> <mrow /> <mrow> <mo>∗</mo> </mrow> </msup> </math> </jats:inline-formula>, and heat transfer improvement (HTI). Moreover, Witte-Shamsundar efficiency (<jats:inline-formula> <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2"> <msub> <mrow> <mi>η</mi> </mrow> <mrow> <mi>W</mi> <mo>−</mo> <mi>S</mi> </mrow> </msub> </math> </jats:inline-formula>) was applied to pinpoint the efficiency of the system. The highest value of HTI and <jats:inline-formula> <math xmlns="http://www.w3.org/1998/Math/MathML" id="M3"> <msub> <mrow> <mi>η</mi> </mrow> <mrow> <mi>W</mi> <mo>−</mo> <mi>S</mi> </mrow> </msub> </math> </jats:inline-formula> was 1.7 and 0.9 that achieved by "single-nozzle; A90-D50-N12.5-M0.2" and "quad-nozzle; A30-D50-N12.5-M2," respectively.
In application/xml+jats format

Archived Files and Locations

application/pdf  1.5 MB
downloads.hindawi.com (publisher)
web.archive.org (webarchive)
Read Archived PDF
Type  article-journal
Stage   published
Date   2021-10-11
Language   en ?
Journal Metadata
Open Access Publication
In Keepers Registery
ISSN-L:  1110-662X
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: da9ab713-3735-48ba-8ace-0c10d3494a01