Heat transfer on microstructured surfaces with pool boiling of various liquids

Abstract

Recommendations for predicting heat transfer coefficients and critical heat fluxes are developed on the basis of available experimental data on heat transfer and critical heat fluxes for boiling of different liquids on microstructured surfaces realized by deformed cutting method. Microstructured surfaces allow intensifying heat transfer 1.1 to 6 times. Due to the variable wettability of microstructured surface elements, critical heat fluxes increase over 4 times. The proposed criteria equations allow predicting heat transfer coefficients with an error of 30%, and critical heat fluxes with an error of 30-35%. The equations are of interest for designing cooling systems for microelectronic devices, heat and mass transfer devices, boiling zones of heat pipes and thermosyphons, etc.