Electrohydrodynamically Enhanced Convective Boiling: Relationship Between Electrohydrodynamic Pressure and Momentum Flux Rate

Autor:	J. E. Bryan, Jamal Seyed-Yagoobi
Rok vydání:	1999
Předmět:	Mass flux Pressure drop Momentum (technical analysis) Materials science Mechanical Engineering Heat transfer enhancement Physics::Medical Physics Thermodynamics Heat transfer coefficient Condensed Matter Physics Mechanics of Materials Boiling Heat transfer General Materials Science Nucleate boiling
Zdroj:	Journal of Heat Transfer. 122:266-277
ISSN:	1528-8943 0022-1481
DOI:	10.1115/1.521464
Popis:	The relationship between the mean radial electrohydrodynamic (EHD) pressure and the rate of the axial momentum flux and its influence on heat transfer enhancement and pressure drop in EHD-enhanced convective boiling of R-134a in a horizontal smooth tube was investigated in detail. A simple theory, which included the characteristics of two-phase flow, was developed to determine the mean radial EHD pressure. It was shown that the amount of heat transfer enhancement and the pressure drop penalty were dependent upon the size of the mean radial EHD pressure relative to the rate of the axial momentum flux. The influence of the mass flux, change in quality, and saturation temperature on the mean radial EHD pressure relative to the rate of the axial momentum flux was also studied. This study has provided a greater understanding of EHD enhancement of the convective boiling heat transfer. [S0022-1481(00)01802-8]
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f2253aad6b7c1afbf84eed8e9f114ed https://doi.org/10.1115/1.521464 Zobrazit plný text záznamu