Title

Critical Heat Flux In Spray Cooling

Abstract

Similar to other processes involving boiling/evaporation, spray cooling is also characterized by a critical heat flux. Due to the nature of liquid supply in spray cooling, the critical heat flux could be an order of magnitude higher than in pool boiling even for very low liquid flow rates. Hence, spray cooling is one of the best candidates for applications requiring high heat flux removal, e.g., thermal management of high power electronics and electro-optic systems. However, the critical heat flux phenomenon in spray cooling is not well understood. This paper presents a discussion on this topic. A semi-empirical correlation was derived recently for sprays produced by pressure atomizing nozzles based on the macrolayer dry-out theory. With modifications to this correlation, a unified correlation is obtained for critical heat flux in spray cooling with both air atomizing and pressure atomizing nozzles. The data of various past researchers compare very well with the correlation. The effects of some important factors, not included in the correlation, are also discussed.

Publication Date

1-1-1996

Publication Title

34th Aerospace Sciences Meeting and Exhibit

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.1996-727

Socpus ID

85085847423 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85085847423

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