Performance enhancement of centrally finned twist inserted solar collector using corrugated booster reflectors
Performance enhancement of centrally finned twist (CFT) inserted solar collector using corrugated booster reflectors (CBR) have been approached experimentally. The experimental trials have been made with two different twist ratios (Y = 3 and 6) for typical twist (TT) and centrally finned twist (CFT)...
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| Veröffentlicht in: | Energy (Oxford) 2019-02, Vol.168, p.858-869 |
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| creator | Murugan, M. Vijayan, R. Saravanan, A. Jaisankar, S. |
| description | Performance enhancement of centrally finned twist (CFT) inserted solar collector using corrugated booster reflectors (CBR) have been approached experimentally. The experimental trials have been made with two different twist ratios (Y = 3 and 6) for typical twist (TT) and centrally finned twist (CFT) under same working conditions. The results were compared with the plain tube solar thermal collector (SC) with CBR and also with the plain tube SC with flat booster reflectors (FBR). The experimental result of the plain tube CBR SC has been verified with the standard equations and found the deviations within ±10.32% for Nusselt number and ±9.14% for friction factor. The CBR has 1.6% higher effective reflector area than the FBR. Hence, the CBR augmented the Nusselt number around 8.25% over the FBR. When compared to the plain tube CBR SC, the CFT of minimum twist ratio (Y = 3) offered 11.08% higher thermal efficiency. In addition, empirical correlations have been derived for predicting the Nusselt number and friction factor. The deviations of the predicted value from the experiment value fall within ±11.02% for Nusselt number and ±10.88% for friction factor.
•Use of corrugated booster reflectors in solar collector fields is proposed.•Effective reflector area of CBR is 1.6% higher than FBR.•CBR with CFT of twist ratio 3 offered higher thermal efficiency than CBR with plain tube.•Empirical correlations are developed for Nusselt number and friction factor. |
| doi_str_mv | 10.1016/j.energy.2018.11.134 |
| format | Article |
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•Use of corrugated booster reflectors in solar collector fields is proposed.•Effective reflector area of CBR is 1.6% higher than FBR.•CBR with CFT of twist ratio 3 offered higher thermal efficiency than CBR with plain tube.•Empirical correlations are developed for Nusselt number and friction factor.</description><identifier>ISSN: 0360-5442</identifier><identifier>EISSN: 1873-6785</identifier><identifier>DOI: 10.1016/j.energy.2018.11.134</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Centrally finned twist ; Corrugated booster reflectors ; Flat booster reflectors ; Fluid flow ; Friction ; Friction factor ; Nusselt number ; Performance enhancement ; Reflectors ; Solar collectors ; Solar heating ; Solar thermal collector ; Thermodynamic efficiency ; Typical twist ; Viscosity ; Working conditions</subject><ispartof>Energy (Oxford), 2019-02, Vol.168, p.858-869</ispartof><rights>2018 Elsevier Ltd</rights><rights>Copyright Elsevier BV Feb 1, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c373t-314fca0170096dea0c98dfcc704040cf874fbfca32432c075ea6f4b7d906bc923</citedby><cites>FETCH-LOGICAL-c373t-314fca0170096dea0c98dfcc704040cf874fbfca32432c075ea6f4b7d906bc923</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0360544218323454$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Murugan, M.</creatorcontrib><creatorcontrib>Vijayan, R.</creatorcontrib><creatorcontrib>Saravanan, A.</creatorcontrib><creatorcontrib>Jaisankar, S.</creatorcontrib><title>Performance enhancement of centrally finned twist inserted solar collector using corrugated booster reflectors</title><title>Energy (Oxford)</title><description>Performance enhancement of centrally finned twist (CFT) inserted solar collector using corrugated booster reflectors (CBR) have been approached experimentally. The experimental trials have been made with two different twist ratios (Y = 3 and 6) for typical twist (TT) and centrally finned twist (CFT) under same working conditions. The results were compared with the plain tube solar thermal collector (SC) with CBR and also with the plain tube SC with flat booster reflectors (FBR). The experimental result of the plain tube CBR SC has been verified with the standard equations and found the deviations within ±10.32% for Nusselt number and ±9.14% for friction factor. The CBR has 1.6% higher effective reflector area than the FBR. Hence, the CBR augmented the Nusselt number around 8.25% over the FBR. When compared to the plain tube CBR SC, the CFT of minimum twist ratio (Y = 3) offered 11.08% higher thermal efficiency. In addition, empirical correlations have been derived for predicting the Nusselt number and friction factor. The deviations of the predicted value from the experiment value fall within ±11.02% for Nusselt number and ±10.88% for friction factor.
•Use of corrugated booster reflectors in solar collector fields is proposed.•Effective reflector area of CBR is 1.6% higher than FBR.•CBR with CFT of twist ratio 3 offered higher thermal efficiency than CBR with plain tube.•Empirical correlations are developed for Nusselt number and friction factor.</description><subject>Centrally finned twist</subject><subject>Corrugated booster reflectors</subject><subject>Flat booster reflectors</subject><subject>Fluid flow</subject><subject>Friction</subject><subject>Friction factor</subject><subject>Nusselt number</subject><subject>Performance enhancement</subject><subject>Reflectors</subject><subject>Solar collectors</subject><subject>Solar heating</subject><subject>Solar thermal collector</subject><subject>Thermodynamic efficiency</subject><subject>Typical twist</subject><subject>Viscosity</subject><subject>Working conditions</subject><issn>0360-5442</issn><issn>1873-6785</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kE1r3DAQhkVJoZtt_0EPgpztjiz56xIoS5oEFpJDexZaebTV4pW2Iztl_31l3HPQ4WXgmdHMw9hXAaUA0Xw7lRiQjteyAtGVQpRCqg9sI7pWFk3b1TdsA7KBolaq-sRuUzoBQN31_YaFVyQX6WyCRY7h95JnDBOPjtucZMbxyp0PAQc-_fVp4j4kpCmXKY6GuI3jiHaKxOfkwzHXRPPRLMAhxjQhcUK3Iukz--jMmPDL_9yyXz8efu6eiv3L4_Pu-76wspVTIYVy1oBoAfpmQAO27wZnbQsqP-u6VrlDJmSlZGWhrdE0Th3aoYfmYPtKbtndOvdC8c-MadKnOFPIX-pK9FLUUFcLpVbKUkwpb6kv5M-GrlqAXszqk17N6sWsFkJns7ntfm3DfMGbR9LJesziBk_5TD1E__6Af6UAht4</recordid><startdate>20190201</startdate><enddate>20190201</enddate><creator>Murugan, M.</creator><creator>Vijayan, R.</creator><creator>Saravanan, A.</creator><creator>Jaisankar, S.</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20190201</creationdate><title>Performance enhancement of centrally finned twist inserted solar collector using corrugated booster reflectors</title><author>Murugan, M. ; Vijayan, R. ; Saravanan, A. ; Jaisankar, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c373t-314fca0170096dea0c98dfcc704040cf874fbfca32432c075ea6f4b7d906bc923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Centrally finned twist</topic><topic>Corrugated booster reflectors</topic><topic>Flat booster reflectors</topic><topic>Fluid flow</topic><topic>Friction</topic><topic>Friction factor</topic><topic>Nusselt number</topic><topic>Performance enhancement</topic><topic>Reflectors</topic><topic>Solar collectors</topic><topic>Solar heating</topic><topic>Solar thermal collector</topic><topic>Thermodynamic efficiency</topic><topic>Typical twist</topic><topic>Viscosity</topic><topic>Working conditions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Murugan, M.</creatorcontrib><creatorcontrib>Vijayan, R.</creatorcontrib><creatorcontrib>Saravanan, A.</creatorcontrib><creatorcontrib>Jaisankar, S.</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Energy (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Murugan, M.</au><au>Vijayan, R.</au><au>Saravanan, A.</au><au>Jaisankar, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Performance enhancement of centrally finned twist inserted solar collector using corrugated booster reflectors</atitle><jtitle>Energy (Oxford)</jtitle><date>2019-02-01</date><risdate>2019</risdate><volume>168</volume><spage>858</spage><epage>869</epage><pages>858-869</pages><issn>0360-5442</issn><eissn>1873-6785</eissn><abstract>Performance enhancement of centrally finned twist (CFT) inserted solar collector using corrugated booster reflectors (CBR) have been approached experimentally. The experimental trials have been made with two different twist ratios (Y = 3 and 6) for typical twist (TT) and centrally finned twist (CFT) under same working conditions. The results were compared with the plain tube solar thermal collector (SC) with CBR and also with the plain tube SC with flat booster reflectors (FBR). The experimental result of the plain tube CBR SC has been verified with the standard equations and found the deviations within ±10.32% for Nusselt number and ±9.14% for friction factor. The CBR has 1.6% higher effective reflector area than the FBR. Hence, the CBR augmented the Nusselt number around 8.25% over the FBR. When compared to the plain tube CBR SC, the CFT of minimum twist ratio (Y = 3) offered 11.08% higher thermal efficiency. In addition, empirical correlations have been derived for predicting the Nusselt number and friction factor. The deviations of the predicted value from the experiment value fall within ±11.02% for Nusselt number and ±10.88% for friction factor.
•Use of corrugated booster reflectors in solar collector fields is proposed.•Effective reflector area of CBR is 1.6% higher than FBR.•CBR with CFT of twist ratio 3 offered higher thermal efficiency than CBR with plain tube.•Empirical correlations are developed for Nusselt number and friction factor.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.energy.2018.11.134</doi><tpages>12</tpages></addata></record> |
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| subjects | Centrally finned twist Corrugated booster reflectors Flat booster reflectors Fluid flow Friction Friction factor Nusselt number Performance enhancement Reflectors Solar collectors Solar heating Solar thermal collector Thermodynamic efficiency Typical twist Viscosity Working conditions |
| title | Performance enhancement of centrally finned twist inserted solar collector using corrugated booster reflectors |
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