Design of a Micro-Probe For Direct Measurement of Convection Heat Transfer on a Vertical

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Show simple item record Madadnia, Jafar en_US Dehestani, Davood en_US Mehta, A. en_US Koosha, Homa en_US
dc.contributor.editor Batra, R; Qian, L; He, Y; Li, X; Zhou, D; Dresig, H; Morita, Y; Chuah, K; en_US 2012-10-12T03:36:34Z 2012-10-12T03:36:34Z 2011 en_US
dc.identifier 2010005073 en_US
dc.identifier.citation Madadnia Jafar et al. 2011, 'Design of a Micro-Probe For Direct Measurement of Convection Heat Transfer on a Vertical', , Science Press USA Inc, NJ 08852, USA, , pp. 817-824. en_US
dc.identifier.issn 978-1-933100-40-1 en_US
dc.identifier.other E1 en_US
dc.description.abstract A proximity probe with two k-type thermocouples, 1.5 mm apart, was designed, built to simultaneously measure local surface and air temperatures on the PV and to quantify local convention heat transfer coefficient. Experimental investigations of natural convection on a vertical photovoltaic (PV) panel exposed to solar radiations are presented. The variation of non-isothermal surface temperature of a PV is expressed with a second-order polynomial relation. In the absence of any correlation to predict the natural convection heat transfer coefficient on a PV, experimental results are presented in the form of variations of the local Nusselt numbers (Nuz), and the average Nusselt numbers (Nu), with Rayleigh number (Ra). The variations are best expressed with a power law correlation form of Nu=a*(Ra)^b for the range 10^6 <Ra<10^8 where a and b are determined experimentally. The power-law correlations for photovoltaic were compared with a number of correlations developed from natural convection research in laboratories. The analysis showed that for a given Rayleigh number, the predicted value of Nusselt number by the PV correlations are within the range covered by others. However, the PV correlations overestimate the Nusselt number by 20% in Rayleigh number higher than 10^6 . The work is in progress to further extend the correlation to predict the combined radiation and convection on all PV configurations, as required in the efficient design of building integrated photovoltaic (BIPV) systems. en_US
dc.language English en_US
dc.publisher Science Press USA Inc en_US
dc.relation.isbasedon NA en_US
dc.title Design of a Micro-Probe For Direct Measurement of Convection Heat Transfer on a Vertical en_US
dc.parent Proceedings of the 4th ICMEM en_US
dc.journal.volume en_US
dc.journal.number en_US
dc.publocation NJ 08852, USA en_US
dc.identifier.startpage 817 en_US
dc.identifier.endpage 824 en_US FEIT.School of Elec, Mech and Mechatronic Systems en_US
dc.conference Verified OK en_US
dc.for 091505 en_US
dc.personcode 940739 en_US
dc.personcode 11064793 en_US
dc.personcode 0000070266 en_US
dc.personcode 994321 en_US
dc.percentage 100 en_US Heat and Mass Transfer Operations en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US 20110810 en_US
dc.location.activity Suzhou, China en_US
dc.description.keywords Natural Convection heat transfer, Solar energy, Energy Efficiency, Photovoltaic, Building Integrated Photovoltaic (BIPV), Experimental method, Empirical correlations en_US
dc.staffid en_US
dc.staffid 994321 en_US

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