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Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber

Solar collector consists of a solar absorber which absorbs heat from short wave solar radiation and transfers the heat to the working fluid for storage or use. Instead of merely a normal flat plate, staggered pinned plate absorbers with different surface roughness – 2 mm, 3mm and 4 mm height are int...

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Main Author: Mat Ghani, Normanisah
Format: Final Year Project
Language:English
Published: UNIVERSITI TEKNOLOGI PETRONAS 2012
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://utpedia.utp.edu.my/6235/1/DISSERTATION%20REPORT%20FINAL%20DRAFT_NORMANISAH_12126_ME.pdf
http://utpedia.utp.edu.my/6235/
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spelling my-utp-utpedia.62352017-01-25T09:40:05Z http://utpedia.utp.edu.my/6235/ Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber Mat Ghani, Normanisah TJ Mechanical engineering and machinery Solar collector consists of a solar absorber which absorbs heat from short wave solar radiation and transfers the heat to the working fluid for storage or use. Instead of merely a normal flat plate, staggered pinned plate absorbers with different surface roughness – 2 mm, 3mm and 4 mm height are introduced in this project. The main interest is on the effect of turbulence of absorber plates on the natural convection heat transfer process of the air heating solar collectors. The paper investigates the effect of inclination angle and absorber types on the heat transfer, solar insolation, air outlet temperature and velocity, etc. It involves series of experimental works conducted on 4 solar collector test rigs simultaneously that were ran at 10°, 30°, 50°, 70° and 90° inclination angles. For each configuration, the experiments are repeated for four consecutive days. Readings were recorded at two hours intervals from 8am until 6pm for data collection of the investigated parameters. Solar insolation is higher for system at lower inclination angle yet for convective heat transfer coefficient; it is optimum at 50° inclination angle which best at 45°. Solar collectors with pinned plate absorbers are noticeably provides better outlet temperature and heat transfer rate than a normal flat plate absorber where the 2mm is the best pursued by 3mm and 4mm pinned absorbers. The boundary layer is disturbed in channel with pinned plate thus the effect of added turbulent enhance the heat transfer. The overall system at all configurations possesses a mixed convection, turbulent flow behavior thus invalid the claims of natural convection. UNIVERSITI TEKNOLOGI PETRONAS 2012-09 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/6235/1/DISSERTATION%20REPORT%20FINAL%20DRAFT_NORMANISAH_12126_ME.pdf Mat Ghani, Normanisah (2012) Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber. UNIVERSITI TEKNOLOGI PETRONAS, UNIVERSITI TEKNOLOGI PETRONAS. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Mat Ghani, Normanisah
Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber
description Solar collector consists of a solar absorber which absorbs heat from short wave solar radiation and transfers the heat to the working fluid for storage or use. Instead of merely a normal flat plate, staggered pinned plate absorbers with different surface roughness – 2 mm, 3mm and 4 mm height are introduced in this project. The main interest is on the effect of turbulence of absorber plates on the natural convection heat transfer process of the air heating solar collectors. The paper investigates the effect of inclination angle and absorber types on the heat transfer, solar insolation, air outlet temperature and velocity, etc. It involves series of experimental works conducted on 4 solar collector test rigs simultaneously that were ran at 10°, 30°, 50°, 70° and 90° inclination angles. For each configuration, the experiments are repeated for four consecutive days. Readings were recorded at two hours intervals from 8am until 6pm for data collection of the investigated parameters. Solar insolation is higher for system at lower inclination angle yet for convective heat transfer coefficient; it is optimum at 50° inclination angle which best at 45°. Solar collectors with pinned plate absorbers are noticeably provides better outlet temperature and heat transfer rate than a normal flat plate absorber where the 2mm is the best pursued by 3mm and 4mm pinned absorbers. The boundary layer is disturbed in channel with pinned plate thus the effect of added turbulent enhance the heat transfer. The overall system at all configurations possesses a mixed convection, turbulent flow behavior thus invalid the claims of natural convection.
format Final Year Project
author Mat Ghani, Normanisah
author_facet Mat Ghani, Normanisah
author_sort Mat Ghani, Normanisah
title Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber
title_short Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber
title_full Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber
title_fullStr Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber
title_full_unstemmed Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber
title_sort experimental investigation of natural convection from pinned plate solar absorber
publisher UNIVERSITI TEKNOLOGI PETRONAS
publishDate 2012
url http://utpedia.utp.edu.my/6235/1/DISSERTATION%20REPORT%20FINAL%20DRAFT_NORMANISAH_12126_ME.pdf
http://utpedia.utp.edu.my/6235/
_version_ 1739831323686600704
score 13.211869

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