Heat transfer coefficient and thermal losses of solar collector and Nusselt number correlation for rectangular solar air heater duct with longitudinal fins hold under the absorber plate

被引:16
作者
Chabane F. [1 ]
Moummi N. [1 ]
Bensahal D. [1 ]
Brima A. [1 ]
机构
[1] University of Biskra, Biskra
关键词
Heat Transfer Coefficient; Nusselt Number; Mass Flow Rate; Solar Collector; Global Solar Radiation;
D O I
10.3103/S0003701X14010046
中图分类号
学科分类号
摘要
An experimental investigation has been carried out for a series of system and operating parameters in order to analyze the effect of mass flow rate on heat transfer and Nusselt number characteristics in solar air heater. Experiments are performed at different air mass flow rates; varying from 0.012 to 0.016 kg/s, about hot summer days of Mai 2012. Hourly values of global solar radiation and some meteorological data (temperature, wind speed, relative humidities, etc.) for measuring days are obtained from the Biskra city of Algeria. The experiments encompassed the flow Reynolds number in the range 965.48-1301.4. Longitudinal fins were used inferior the absorber plate for an increase the heat exchange and render the flow fluid in the channel uniform. The effects of mass flow rate of air on the outlet temperature, Nusselt Number, Reynolds Number, Prandtl Number, the heat transfer in the thickness and length of the solar air collector were studied. For this effect was have created a new correlation correspondent of solar air collector with using fins it was written Nu = κ0Re1.36Pr-0.68exp(0.342m)h [-0.018Pr]. © 2014 Allerton Press, Inc.
引用
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页码:19 / 26
页数:7
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