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Heat transfer and pressure drop in corrugated channels

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Title: Heat transfer and pressure drop in corrugated channels
Authors: Elshafei, E.A.M. eelshafei@mans.edu.eg, Awad, M.M.1, El-Negiry, E.1, Ali, A.G.1
Source: Energy. Jan2010, Vol. 35 Issue 1, p101-110. 10p.
Subjects: Heat transfer, Pressure, Reynolds number, Temperature, Friction, Phase shift (Nuclear physics), Nusselt number
Abstract: Abstract: The convective heat transfer and pressure drop characteristics of flow in corrugated channels have been experimentally investigated. Experiments were performed on channels of uniform wall temperature and of fixed corrugation ratio over a range of Reynolds number, 3220≤ Re ≤9420. The effects of channel spacing and phase shift variations on heat transfer and pressure drop are discussed. Results of corrugated channels flow showed a significant heat transfer enhancement accompanied by increased pressure drop penalty. The average heat transfer coefficient and pressure drop enhanced by a factor of 2.6 up to 3.2 and 1.9 to 2.6 relative to those for parallel plate channel, respectively, depending upon the spacing and phase shift. The friction factor increased with increasing channel spacing and its phase shift. The effect of spacing variations on heat transfer and friction factor was more pronounced than that of phase shift variation, especially at high Reynolds number. Comparing results of the tested channels by considering the flow area goodness factor (j/f), it was better for corrugated channel with spacing ratio, ɛ ≤3.0 and of phase shift, Ø ≤90°. Comparisons of the present data with those available in literature are presented and discussed. [Copyright &y& Elsevier]
Copyright of Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 45639150
AccessLevel: 6
PubType: Academic Journal
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  Data: Heat transfer and pressure drop in corrugated channels
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  Data: <searchLink fieldCode="JN" term="%22Energy%22">Energy</searchLink>. Jan2010, Vol. 35 Issue 1, p101-110. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Pressure%22">Pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Reynolds+number%22">Reynolds number</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature%22">Temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Friction%22">Friction</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+shift+%28Nuclear+physics%29%22">Phase shift (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Nusselt+number%22">Nusselt number</searchLink>
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  Data: Abstract: The convective heat transfer and pressure drop characteristics of flow in corrugated channels have been experimentally investigated. Experiments were performed on channels of uniform wall temperature and of fixed corrugation ratio over a range of Reynolds number, 3220≤ Re ≤9420. The effects of channel spacing and phase shift variations on heat transfer and pressure drop are discussed. Results of corrugated channels flow showed a significant heat transfer enhancement accompanied by increased pressure drop penalty. The average heat transfer coefficient and pressure drop enhanced by a factor of 2.6 up to 3.2 and 1.9 to 2.6 relative to those for parallel plate channel, respectively, depending upon the spacing and phase shift. The friction factor increased with increasing channel spacing and its phase shift. The effect of spacing variations on heat transfer and friction factor was more pronounced than that of phase shift variation, especially at high Reynolds number. Comparing results of the tested channels by considering the flow area goodness factor (j/f), it was better for corrugated channel with spacing ratio, ɛ ≤3.0 and of phase shift, Ø ≤90°. Comparisons of the present data with those available in literature are presented and discussed. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.energy.2009.08.031
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        Text: English
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        Type: general
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      – SubjectFull: Reynolds number
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      – SubjectFull: Temperature
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      – SubjectFull: Phase shift (Nuclear physics)
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      – TitleFull: Heat transfer and pressure drop in corrugated channels
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