Local heat/mass transfer measurement on the effusion plate in impingment/effusion cooling system

Hyung Hee Cho, Dong Ho Rhee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The present study is conducted to investigate the local heat/mass transfer characteristics for flow through perforated plates. A naphthalene sublimation method is employed to determine the local heat/mass transfer coefficients on the effusion plate. Two parallel perforated plates are arranged in two different configurations: staggered and shifted in one direction. The experiments are conducted for hole pitch-to-diameter ratios of 6.0, for gap distance between the perforated plates of 0.33 to 10 hole diameters, and for Reynolds numbers of 5,000 to 12,000. The result shows that the high transfer region is formed at stagnation region and at the mid-line of the adjacent impinging jets due to secondary vortices and flow acceleration to the effusion hole. For flows through the perforated plates, the mass transfer rates on the surface of the effusion plate are about six to ten times higher than for effusion cooling alone (single perforated plate). In general, higher heat/mass transfer is obtained with smaller gap distance between two perforated plates.

Original languageEnglish
Title of host publicationHeat Transfer; Electric Power; Industrial and Cogeneration
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791878569, 9780791878569
DOIs
Publication statusPublished - 2000 Jan 1
EventASME Turbo Expo 2000: Power for Land, Sea, and Air, GT 2000 - Munich, Germany
Duration: 2000 May 82000 May 11

Publication series

NameProceedings of the ASME Turbo Expo
Volume3

Other

OtherASME Turbo Expo 2000: Power for Land, Sea, and Air, GT 2000
CountryGermany
CityMunich
Period00/5/800/5/11

Fingerprint

Perforated plates
Cooling systems
Mass transfer
Sublimation
Naphthalene
Hot Temperature
Vortex flow
Reynolds number
Cooling

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Cho, H. H., & Rhee, D. H. (2000). Local heat/mass transfer measurement on the effusion plate in impingment/effusion cooling system. In Heat Transfer; Electric Power; Industrial and Cogeneration (Proceedings of the ASME Turbo Expo; Vol. 3). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/2000-GT-0252
Cho, Hyung Hee ; Rhee, Dong Ho. / Local heat/mass transfer measurement on the effusion plate in impingment/effusion cooling system. Heat Transfer; Electric Power; Industrial and Cogeneration. American Society of Mechanical Engineers (ASME), 2000. (Proceedings of the ASME Turbo Expo).
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Cho, HH & Rhee, DH 2000, Local heat/mass transfer measurement on the effusion plate in impingment/effusion cooling system. in Heat Transfer; Electric Power; Industrial and Cogeneration. Proceedings of the ASME Turbo Expo, vol. 3, American Society of Mechanical Engineers (ASME), ASME Turbo Expo 2000: Power for Land, Sea, and Air, GT 2000, Munich, Germany, 00/5/8. https://doi.org/10.1115/2000-GT-0252

Local heat/mass transfer measurement on the effusion plate in impingment/effusion cooling system. / Cho, Hyung Hee; Rhee, Dong Ho.

Heat Transfer; Electric Power; Industrial and Cogeneration. American Society of Mechanical Engineers (ASME), 2000. (Proceedings of the ASME Turbo Expo; Vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - The present study is conducted to investigate the local heat/mass transfer characteristics for flow through perforated plates. A naphthalene sublimation method is employed to determine the local heat/mass transfer coefficients on the effusion plate. Two parallel perforated plates are arranged in two different configurations: staggered and shifted in one direction. The experiments are conducted for hole pitch-to-diameter ratios of 6.0, for gap distance between the perforated plates of 0.33 to 10 hole diameters, and for Reynolds numbers of 5,000 to 12,000. The result shows that the high transfer region is formed at stagnation region and at the mid-line of the adjacent impinging jets due to secondary vortices and flow acceleration to the effusion hole. For flows through the perforated plates, the mass transfer rates on the surface of the effusion plate are about six to ten times higher than for effusion cooling alone (single perforated plate). In general, higher heat/mass transfer is obtained with smaller gap distance between two perforated plates.

AB - The present study is conducted to investigate the local heat/mass transfer characteristics for flow through perforated plates. A naphthalene sublimation method is employed to determine the local heat/mass transfer coefficients on the effusion plate. Two parallel perforated plates are arranged in two different configurations: staggered and shifted in one direction. The experiments are conducted for hole pitch-to-diameter ratios of 6.0, for gap distance between the perforated plates of 0.33 to 10 hole diameters, and for Reynolds numbers of 5,000 to 12,000. The result shows that the high transfer region is formed at stagnation region and at the mid-line of the adjacent impinging jets due to secondary vortices and flow acceleration to the effusion hole. For flows through the perforated plates, the mass transfer rates on the surface of the effusion plate are about six to ten times higher than for effusion cooling alone (single perforated plate). In general, higher heat/mass transfer is obtained with smaller gap distance between two perforated plates.

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Cho HH, Rhee DH. Local heat/mass transfer measurement on the effusion plate in impingment/effusion cooling system. In Heat Transfer; Electric Power; Industrial and Cogeneration. American Society of Mechanical Engineers (ASME). 2000. (Proceedings of the ASME Turbo Expo). https://doi.org/10.1115/2000-GT-0252