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Effect of the spray cone angle in the spray cooling with R134a
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
2013 (English)In: Experimental Thermal and Fluid Science, ISSN 0894-1777, Vol. 50, 127-138 p.Article in journal (Refereed) Published
Abstract [en]

Spray cooling experiments were performed to study the effect of the spray cone angle on heat transfer and film thickness. The experiments were carried out for three different types of nozzles. Results for heat transfer and film thickness for different flow rates are presented working with the dielectric refrigerant R134a and on a heater with low surface roughness. The behavior of the heat transfer with respect to the spray cone angle shows that as the spray cone angle decreases, there is a delay in the onset of the nucleated boiling regime. As a result, thermal performance worsens as the spray cone angle decreases. On the other hand, in the nucleate boiling regime film thickness increases as the spray cone angle decreases. The qualitative analysis of these variations serves to better understand the heat transfer mechanisms that occur during the spray cooling technique.

Place, publisher, year, edition, pages
2013. Vol. 50, 127-138 p.
Keyword [en]
Spray cone angle, Spray cooling, Thermal measurements
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-126038DOI: 10.1016/j.expthermflusci.2013.05.012ISI: 000323092500015ScopusID: 2-s2.0-84880741608OAI: diva2:641735

QC 20130819

Available from: 2013-08-19 Created: 2013-08-19 Last updated: 2013-09-12Bibliographically approved

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Khodabandeh, Rahmatollah
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