Development of a general dynamic pressure based single-phase spray cooling heat transfer correlation / Bahman Abbasi in Journal of heat transfer, Vol. 133 N° 5 (Mai 2011)  

Public ISBD [article]  inJournal of heat transfer > Vol. 133 N° 5 (Mai 2011) . - pp. [052201/1-10] Titre : Development of a general dynamic pressure based single-phase spray cooling heat transfer correlation Type de document : texte imprimé Auteurs : Bahman Abbasi, Auteur ; Jungho Kim, Auteur Année de publication : 2011 Article en page(s) : pp. [052201/1-10] Note générale : Physique Langues : Anglais (eng) Mots-clés : Spray cooling Single-phase heat transfer Local coefficient impingement pressure Microheater array Index. décimale : 536 Chaleur. Thermodynamique Résumé : One of the main challenges of spray cooling technology is the prediction of local and average heat transfer coefficients on the heater surface. It is hypothesized that the local heat transfer coefficient can be predicted from the local normal pressure produced by the spray. In this study, hollow cone, full cone, and flat fan sprays, operated at three standoff distances, five spray pressures, and two nozzle orientations, were used to identify the relation between the impingement pressure and the heat transfer coefficient in the single-phase regime. PF-5060, PAO-2, and PSF-3 were used as test fluids, resulting in Prandtl number variation between 12 and 76. A microheater array operated at constant temperature was used to measure the local heat flux. A separate test rig was used to make impingement pressure measurements for the same geometry and spray pressure. The heat flux data were then compared with the corresponding impingement pressure data to develop a pressure-based correlation for spray cooling heat transfer. The maximum deviation between the experimental data and prediction was within ±25%. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Development of a general dynamic pressure based single-phase spray cooling heat transfer correlation [texte imprimé] / Bahman Abbasi, Auteur ; Jungho Kim, Auteur . - 2011 . - pp. [052201/1-10]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 5 (Mai 2011) . - pp. [052201/1-10] Mots-clés : Spray cooling Single-phase heat transfer Local coefficient impingement pressure Microheater array Index. décimale : 536 Chaleur. Thermodynamique Résumé : One of the main challenges of spray cooling technology is the prediction of local and average heat transfer coefficients on the heater surface. It is hypothesized that the local heat transfer coefficient can be predicted from the local normal pressure produced by the spray. In this study, hollow cone, full cone, and flat fan sprays, operated at three standoff distances, five spray pressures, and two nozzle orientations, were used to identify the relation between the impingement pressure and the heat transfer coefficient in the single-phase regime. PF-5060, PAO-2, and PSF-3 were used as test fluids, resulting in Prandtl number variation between 12 and 76. A microheater array operated at constant temperature was used to measure the local heat flux. A separate test rig was used to make impingement pressure measurements for the same geometry and spray pressure. The heat flux data were then compared with the corresponding impingement pressure data to develop a pressure-based correlation for spray cooling heat transfer. The maximum deviation between the experimental data and prediction was within ±25%. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]

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