TY - GEN
T1 - Flow boiling critical heat flux on small heated regions
AU - Simon, Terrence W.
AU - Wu, Pey Shey
PY - 1993
Y1 - 1993
N2 - Often, in optical and electronic equipment, heating is concentrated in very small regions, and, because of materials constraints, cooled walls must be as thin as possible. Also, for efficiency, many high-flux cooling designs involve forced-convection boiling heat transfer. Though efficient, a design with boiling heat transfer can be difficult for it must properly account for the complexities of the boiling flux-temperature relationship. Of concern is locating the point of incipience to boiling and the point of maximum nucleate boiling heat flux, Critical Heat Flux (CHF), and describing the complex behaviors in the vicinities of these points. Characteristics of boiling near these points are discussed in terms of boundary layer behavior. Changes in either the heater size or the wall thickness affects the boiling curve, particularly the CHF behavior. Results from experiments which were conducted on small, heated regions are discussed in light of their application to the design of high-power optical and electronic devices. The effects of flow velocity, subcooling, pressure, heating length, dissolved gas content, and flow streamline curvature are addressed.
AB - Often, in optical and electronic equipment, heating is concentrated in very small regions, and, because of materials constraints, cooled walls must be as thin as possible. Also, for efficiency, many high-flux cooling designs involve forced-convection boiling heat transfer. Though efficient, a design with boiling heat transfer can be difficult for it must properly account for the complexities of the boiling flux-temperature relationship. Of concern is locating the point of incipience to boiling and the point of maximum nucleate boiling heat flux, Critical Heat Flux (CHF), and describing the complex behaviors in the vicinities of these points. Characteristics of boiling near these points are discussed in terms of boundary layer behavior. Changes in either the heater size or the wall thickness affects the boiling curve, particularly the CHF behavior. Results from experiments which were conducted on small, heated regions are discussed in light of their application to the design of high-power optical and electronic devices. The effects of flow velocity, subcooling, pressure, heating length, dissolved gas content, and flow streamline curvature are addressed.
UR - http://www.scopus.com/inward/record.url?scp=0027883264&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027883264&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0027883264
SN - 0819412465
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 2
EP - 15
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Khounsary, Ali M.
PB - Publ by Society of Photo-Optical Instrumentation Engineers
T2 - High Heat Flux Engineering II
Y2 - 12 July 1993 through 13 July 1993
ER -