Experimental measurements in a spray cooling test rig have been carried out for several heat fluxes in the heater and different spray volumetric fluxes with the dielectric refrigerant R134a. Results of the heat transfer and the sprayed refrigerant film thickness measurements are presented. The film thickness measurements have been made with a high speed camera equipped with a long distance microscope. It has been found that there is a relation between the variation in the average Nusselt number and the film thickness along the spray cooling boiling curve. The heat transfer regimes along that curve are related not only with a variation in the average Nusselt number but also with changes in the film thickness. The qualitative analysis of those variations has served to understand better the heat transfer mechanisms occurring during the spray cooling.
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e-mail: emartinez@tecnun.es
e-mail: jcramos@tecnun.es
e-mail: ranton@tecnun.es
e-mail: rahmatollah.khodabandeh@energy.kth.se
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March 2011
Research Papers
Film Thickness and Heat Transfer Measurements in a Spray Cooling System With R134a
Eduardo Martínez-Galván,
Eduardo Martínez-Galván
TECNUN,
e-mail: emartinez@tecnun.es
University of Navarra
, Paseo de Manuel Lardizábal, 13 San Sebastián, Guipúzcoa 20018, Spain
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Juan Carlos Ramos,
Juan Carlos Ramos
TECNUN,
e-mail: jcramos@tecnun.es
University of Navarra
, Paseo de Manuel Lardizábal, 13 San Sebastián, Guipúzcoa 20018, Spain
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Raúl Antón,
Raúl Antón
TECNUN,
e-mail: ranton@tecnun.es
University of Navarra
, Paseo de Manuel Lardizábal, 13 San Sebastián, Guipúzcoa 20018, Spain
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Rahmatollah Khodabandeh
Rahmatollah Khodabandeh
Department of Energy Technology,
e-mail: rahmatollah.khodabandeh@energy.kth.se
Royal Institute of Technology (KTH)
, Brinellvägen 68, Stockholm 10044, Sweden
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Eduardo Martínez-Galván
TECNUN,
University of Navarra
, Paseo de Manuel Lardizábal, 13 San Sebastián, Guipúzcoa 20018, Spaine-mail: emartinez@tecnun.es
Juan Carlos Ramos
TECNUN,
University of Navarra
, Paseo de Manuel Lardizábal, 13 San Sebastián, Guipúzcoa 20018, Spaine-mail: jcramos@tecnun.es
Raúl Antón
TECNUN,
University of Navarra
, Paseo de Manuel Lardizábal, 13 San Sebastián, Guipúzcoa 20018, Spaine-mail: ranton@tecnun.es
Rahmatollah Khodabandeh
Department of Energy Technology,
Royal Institute of Technology (KTH)
, Brinellvägen 68, Stockholm 10044, Swedene-mail: rahmatollah.khodabandeh@energy.kth.se
J. Electron. Packag. Mar 2011, 133(1): 011002 (11 pages)
Published Online: March 3, 2011
Article history
Received:
November 30, 2009
Revised:
April 9, 2010
Online:
March 3, 2011
Published:
March 3, 2011
Citation
Martínez-Galván, E., Ramos, J. C., Antón, R., and Khodabandeh, R. (March 3, 2011). "Film Thickness and Heat Transfer Measurements in a Spray Cooling System With R134a." ASME. J. Electron. Packag. March 2011; 133(1): 011002. https://doi.org/10.1115/1.4001857
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