Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/4452
DC FieldValueLanguage
dc.contributor.authorKalogirou, Soteris A.-
dc.contributor.illustratorΚαλογήρου, Σωτήρης Α.-
dc.date.accessioned2014-07-09T07:56:59Z-
dc.date.accessioned2015-12-09T12:22:54Z-
dc.date.available2014-07-09T07:56:59Z-
dc.date.available2015-12-09T12:22:54Z-
dc.date.issued2012-06-
dc.identifier.citation25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes, 2012, 26-29 June, Perugia, Italyen_US
dc.identifier.urihttps://hdl.handle.net/20.500.14279/4452-
dc.description.abstractThis paper employs exergy analysis to derive a general equation for the exergy efficiency of flat plate collectors and thus optimize its design and operation. Exergy analysis of a flat-plate solar collector is a more effective method of finding the optimum relationship between flow rate and the collector area. The fixed parameters in this optimization are the collector inlet temperature, available solar radiation, the collector transmittance-absorptance product and the ambient temperature. The collector heat loss coefficient is estimated according to the collector plate temperature, wind convection loss, number of glass covers, collector inclination, ambient temperature and emittance of collector plate and glass cover. In order to find the optimum value of this multivariable problem genetic algorithms are used which are based on the principles of genetics and survival of the fittest. The optimization parameter is exergy efficiency and the objective is to maximize this parameter. Genetic algorithms proved suitable and very quick in obtaining the required results. These results prove that the exergy efficiency of a flat-plate solar collector is maximized for small distances between the riser tubes and for very small diameter of these tubes. By using a more practical distance of 10 centimetres between the tubes, and excluding this parameter from the optimization procedure, very small differences are observed in maximum exergy efficiency and if the cost of the materials is accounted this is a more cost-effective solution. Other findings are that the exergy efficiency increases considerably at higher solar radiation and that the transmittance absorptance product affects to a great extent the exergy efficiency.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.subjectCostsen_US
dc.subjectEfficiencyen_US
dc.subjectEnergy conversionen_US
dc.subjectExergyen_US
dc.subjectGlassen_US
dc.subjectOptimizationen_US
dc.subjectSolar collectorsen_US
dc.subjectSolar radiationen_US
dc.subjectSunen_US
dc.subjectTemperatureen_US
dc.subjectTubes (components)en_US
dc.subjectCost-effective solutionsen_US
dc.subjectExergy Analysisen_US
dc.subjectFlat-plate collectoren_US
dc.subjectFlat-plate solar collectorsen_US
dc.subjectOptimisationsen_US
dc.subjectOptimization parameteren_US
dc.subjectOptimization proceduresen_US
dc.subjectSurvival-of-the-Fittesten_US
dc.subjectGenetic algorithmsen_US
dc.titleExergy analysis and genetic algorithms for the optimization of flat-plate solar collectorsen_US
dc.typeConference Papersen_US
dc.collaborationCyprus University of Technologyen_US
dc.subject.categoryEnvironmental Engineeringen_US
dc.countryCyprusen_US
dc.subject.fieldEngineering and Technologyen_US
dc.publicationPeer Revieweden_US
dc.relation.conference25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processesen_US
dc.dept.handle123456789/141en
cut.common.academicyear2011-2012en_US
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_c94f-
item.cerifentitytypePublications-
item.openairetypeconferenceObject-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.orcid0000-0002-4497-0602-
crisitem.author.parentorgFaculty of Engineering and Technology-
Appears in Collections:Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation
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