ShareBOILING HEAT TRANSFER FROM SURFACES WITH POROUS LAYERS.
Author(s) : AFGAN N. H.
Type of article: Article
Summary
HEAT TRANSFER DURING THE BOILING OF WATER, ETHANOL AND R113 FROM A 30-70% POROUS LAYER AT ATMOSPHERIC PRESSURE WAS INVESTIGATED. BUBBLE BOILING ON A POROUS LAYER COMMENCED AT SMALL TEMPERATURE DIFFERENCES OF 1-1.5 K. AT HIGH HEAT FLUXES, A VAPOUR FILM APPEARS AT THE BASE OF THE POROUS LAYER, THUS A QUALITATIVE CHANGE IN THE MECHANISM OF BUBBLE BOILING OCCURS. IN RELATIVELY THICK POROUS LAYERS, THE TRANSITION TO THIS NEW MODE OF BOILING OCCURS AT CRITICAL HEAT FLUX VALUES 2 TO 3 TIMES GREATER THAN FOR SMOOTH SURFACES.
Details
- Original title: BOILING HEAT TRANSFER FROM SURFACES WITH POROUS LAYERS.
- Record ID : 1986-0078
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 28 - n. 2
- Publication date: 1985
Links
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Indexing
- Themes: Mass transfer
- Keywords: Heat transfer; R113; Porous medium; Evaporation; Ethanol; Water
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