Performance evaluation of compact solar water heater with black chromium coating

Having blessed with abundance sunlight and high solar radiation level, Malaysian is tempted to the' green' solar technology. Yet, application of solar water heating system in Malaysia is not so popular. Facing with the unique Malaysian climate, hot and humid, more cloudy and rainy than cle...

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Main Author:	Dg. Nooremah Ag. Said
Format:	Thesis
Language:	English
Published:	2007
Subjects:	TH Building construction
Online Access:	https://eprints.ums.edu.my/id/eprint/6369/1/mt0000000143.pdf
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id	my-ums-ep.6369
record_format	uketd_dc
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English
topic	TH Building construction
spellingShingle	TH Building construction Dg. Nooremah Ag. Said Performance evaluation of compact solar water heater with black chromium coating
description	Having blessed with abundance sunlight and high solar radiation level, Malaysian is tempted to the' green' solar technology. Yet, application of solar water heating system in Malaysia is not so popular. Facing with the unique Malaysian climate, hot and humid, more cloudy and rainy than clear day and of course, a high initial cost, designers and engineers are challenged to come out with a cost efficient Solar Water Heater (SWH). In this study, a compact SWH prototype has been developed and tested. This unit is equipped with a perforated tube (inserted in the lower header tube) which has different number of hole (in ascending order) in each opening to riser tubes, intended to curb the bottleneck problem. The water circulates by thermosiphon principles. During the heating process, the water flow in the riser tube is more uniform with the presence of the perforated tube. In addition, the absorber plate is coated with black chromium selective coating which enhances the thermal radiation absorption (J.Idris et.al., 2003). Problem that often occurs which reduces the efficiency is the heat loss through solar collector panel (especially the top panel) and connecting pipes. The developed compact prototype not only reduces the heat losses but also reduces the usage of material and hence cost. Experimental results showed that the UTM IV prototype has overall heat loss coefficient reduced from 6.91 to 6.83 W/m2K, and instantaneous efficiency rise from 69.4% to 82%, an increase about 12.6%, compared to the UTM II prototype.
format	Thesis
qualification_level	Master's degree
author	Dg. Nooremah Ag. Said
author_facet	Dg. Nooremah Ag. Said
author_sort	Dg. Nooremah Ag. Said
title	Performance evaluation of compact solar water heater with black chromium coating
title_short	Performance evaluation of compact solar water heater with black chromium coating
title_full	Performance evaluation of compact solar water heater with black chromium coating
title_fullStr	Performance evaluation of compact solar water heater with black chromium coating
title_full_unstemmed	Performance evaluation of compact solar water heater with black chromium coating
title_sort	performance evaluation of compact solar water heater with black chromium coating
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Mechanical Engineering
publishDate	2007
url	https://eprints.ums.edu.my/id/eprint/6369/1/mt0000000143.pdf
_version_	1747836324824481792
spelling	my-ums-ep.63692017-10-11T02:35:39Z Performance evaluation of compact solar water heater with black chromium coating 2007 Dg. Nooremah Ag. Said TH Building construction Having blessed with abundance sunlight and high solar radiation level, Malaysian is tempted to the' green' solar technology. Yet, application of solar water heating system in Malaysia is not so popular. Facing with the unique Malaysian climate, hot and humid, more cloudy and rainy than clear day and of course, a high initial cost, designers and engineers are challenged to come out with a cost efficient Solar Water Heater (SWH). In this study, a compact SWH prototype has been developed and tested. This unit is equipped with a perforated tube (inserted in the lower header tube) which has different number of hole (in ascending order) in each opening to riser tubes, intended to curb the bottleneck problem. The water circulates by thermosiphon principles. During the heating process, the water flow in the riser tube is more uniform with the presence of the perforated tube. In addition, the absorber plate is coated with black chromium selective coating which enhances the thermal radiation absorption (J.Idris et.al., 2003). Problem that often occurs which reduces the efficiency is the heat loss through solar collector panel (especially the top panel) and connecting pipes. The developed compact prototype not only reduces the heat losses but also reduces the usage of material and hence cost. Experimental results showed that the UTM IV prototype has overall heat loss coefficient reduced from 6.91 to 6.83 W/m2K, and instantaneous efficiency rise from 69.4% to 82%, an increase about 12.6%, compared to the UTM II prototype. 2007 Thesis https://eprints.ums.edu.my/id/eprint/6369/ https://eprints.ums.edu.my/id/eprint/6369/1/mt0000000143.pdf text en public masters Universiti Teknologi Malaysia Faculty of Mechanical Engineering Adnan Shariah and Bassarn Shalabi (1997). "Optimal Design For A Therrnosyphon Solar Water Heater." Journal of Renewable Energy. Alias Mohd. Noor, Farid Nasir Ani and Kannan, K.S. (1999). "Renewable Energy Scenario In Malaysia." Proc. Of ISREPA 99. Skudai, Malaysia. Arakawa lunji (2001). "Solar Water Heater." (lP 2001091060). Arakawa Junji (2001). "Solar Water Heater with Floats." (JP 2001091061). Arakawa Junji (2001). "Solar Water Heater and Hot Water Collecting Pipe." (JP 2001091062). American Society of Heating and Air-Conditioning Engineers. 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Journal of Solar Energy. Shalee d/o Ramakrishnan (2000). The Microstructures and Optical Properties of Black Chromium Coating on Solar Panel Materials. Universiti Teknologi Malaysia: BEng. Thesis. Sinson D.A. (1979). "How to Build a Solar Water Heater." Quebec, Canada: Brace Research Institute. Solar Research Design Sdn. Bhd. (Microsolar Malaysia - 2003) http://www.microsolarsystem.com Souka A.F. (1976). "Double Exposure Flat-Plate Collector." Journal of Solar Energy. 9. 11 7 Sukhatme, S. P. (1990). "Solar Energy: Principles of Thermal Collection and Storage." New Delhi: Tata McGraw Hill Publishing Company Limited. Suppah Rao s/o Ramanaidu (2000). The Optical Properties and Microstructures of Black Chromium Coating for Solar Thermal Energy Application. Universiti Teknologi Malaysia: BEng. Thesis. Swartman R.K. and Ogunlade 0. (1966). "An Investigation on Packed-Bed Collectors." Journal of Solar Energy. 10. 106. Teoh, Siang Teik (2000). 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Performance evaluation of compact solar water heater with black chromium coating

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