An experimental investigation of heat-transfer and flow in channels with streamwise-periodic flow

We investigate the enhancement of heat transfer and the consequent conservation of energy in channels with segmented baffles. The influence of Reynolds number, baffle spacing, baffle material, and heat flux on local and average heat-transfer coefficients have been studied. Our results show that the...

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Bibliographic Details
Published inEnergy (Oxford) Vol. 17; no. 11; pp. 1049 - 1058
Main Authors Habib, M.A., Mobarak, A.M., Attya, A.M., Aly, A.Z.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.11.1992
Elsevier Science
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat transfer
Theoretical studies. Data and constants. Metering
Improvement
Geometrical parameter
Reynolds number
Thermal conductivity
Heat transfer coefficient
Experimental study
Baffle
Heat transfer
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Summary:We investigate the enhancement of heat transfer and the consequent conservation of energy in channels with segmented baffles. The influence of Reynolds number, baffle spacing, baffle material, and heat flux on local and average heat-transfer coefficients have been studied. Our results show that the flow must pass over three to six baffles before it becomes periodic and fully-developed. Augmentation of heat transfer was obtained with increases in Reynolds number, thermal conductivity of the baffles and decreases in baffle spacing and wall heat flux.
ISSN:0360-5442
DOI:10.1016/0360-5442(92)90021-Q