Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar Collector
In this paper, the heat transfer in a flat-plate solar collector with water tubes spreading across its width was analyzed. The performances of the system both theoretically and experimentally were evaluated and compared. The theoretical results obtained agreed well with the experimental results, exc...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Walailak University
2012-03-01
|
| Series: | Walailak Journal of Science and Technology |
| Subjects: | |
| Online Access: | http://wjst.wu.ac.th/index.php/wjst/article/view/227 |
| _version_ | 1818759203184967680 |
|---|---|
| author | Bukola Olalekan BOLAJI Israel O. ABIALA |
| author_facet | Bukola Olalekan BOLAJI Israel O. ABIALA |
| author_sort | Bukola Olalekan BOLAJI |
| collection | DOAJ |
| description | In this paper, the heat transfer in a flat-plate solar collector with water tubes spreading across its width was analyzed. The performances of the system both theoretically and experimentally were evaluated and compared. The theoretical results obtained agreed well with the experimental results, except that a slight higher deviation of heat loss was obtained in the experimental analysis and low solar radiation in the morning and late afternoon affects the system. An average heat loss coefficient of 0.68 W/m2.°C was obtained in the experimental analysis, while 0.65 W/m2.°C was obtained in the theoretical analysis. The collector efficiency was high around the mid-day when the collector receives the highest energy and the useful heat rate was at its maximum. The results also reveal that the performance of the solar collector depends much on the heat rate. The collector efficiency increases as the heat rate increases until a maximum efficiency of 72.2 % was reached at optimum heat rate of 785 W. |
| first_indexed | 2024-12-18T06:38:59Z |
| format | Article |
| id | doaj.art-9c59b76cd35e4ed7ac0d520597e66840 |
| institution | Directory Open Access Journal |
| issn | 1686-3933 2228-835X |
| language | English |
| last_indexed | 2024-12-18T06:38:59Z |
| publishDate | 2012-03-01 |
| publisher | Walailak University |
| record_format | Article |
| series | Walailak Journal of Science and Technology |
| spelling | doaj.art-9c59b76cd35e4ed7ac0d520597e668402022-12-21T21:17:41ZengWalailak UniversityWalailak Journal of Science and Technology1686-39332228-835X2012-03-019310.2004/wjst.v9i3.227220Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar CollectorBukola Olalekan BOLAJI0Israel O. ABIALA1Department of Mechanical Engineering, College of Engineering, Federal University of Agriculture, AbeokuaDepartment of Mathematics, College of Natural sciences, Federal University of Agriculture, AbeokuaIn this paper, the heat transfer in a flat-plate solar collector with water tubes spreading across its width was analyzed. The performances of the system both theoretically and experimentally were evaluated and compared. The theoretical results obtained agreed well with the experimental results, except that a slight higher deviation of heat loss was obtained in the experimental analysis and low solar radiation in the morning and late afternoon affects the system. An average heat loss coefficient of 0.68 W/m2.°C was obtained in the experimental analysis, while 0.65 W/m2.°C was obtained in the theoretical analysis. The collector efficiency was high around the mid-day when the collector receives the highest energy and the useful heat rate was at its maximum. The results also reveal that the performance of the solar collector depends much on the heat rate. The collector efficiency increases as the heat rate increases until a maximum efficiency of 72.2 % was reached at optimum heat rate of 785 W.http://wjst.wu.ac.th/index.php/wjst/article/view/227Experimentalflat-plateheat transferperformancesolar collector |
| spellingShingle | Bukola Olalekan BOLAJI Israel O. ABIALA Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar Collector Walailak Journal of Science and Technology Experimental flat-plate heat transfer performance solar collector |
| title | Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar Collector |
| title_full | Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar Collector |
| title_fullStr | Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar Collector |
| title_full_unstemmed | Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar Collector |
| title_short | Theoretical and Experimental Analyses of Heat Transfer in a Flat-Plate Solar Collector |
| title_sort | theoretical and experimental analyses of heat transfer in a flat plate solar collector |
| topic | Experimental flat-plate heat transfer performance solar collector |
| url | http://wjst.wu.ac.th/index.php/wjst/article/view/227 |
| work_keys_str_mv | AT bukolaolalekanbolaji theoreticalandexperimentalanalysesofheattransferinaflatplatesolarcollector AT israeloabiala theoreticalandexperimentalanalysesofheattransferinaflatplatesolarcollector |