Wall temperature experimental investigation in a thermally driven channel

P.H. Nguyen, P. Yerro, J.L. Bernard, P. Sellitto and M. Dupont

Renewable Energy, 2000, vol. 19, issue 3, 443-456

Abstract: Direct local wall temperature has been measured, in a steady state, along a vertical air channel asymmetrically heated with uniform fluxes. In the range of high Grashof numbers that was investigated, the flow regime probably remained laminar. A radiative part has been analysed with two extreme values of internal surface emissivity corresponding to unpainted metal and black painted wall. A correlation has been proposed for the calculation of a characteristic channel outlet value of the Nusselt number referred to air spacing. A local Nusselt number over the height has been developed in a power law scheme.

Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:19:y:2000:i:3:p:443-456

DOI: 10.1016/S0960-1481(99)00008-7

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