Flow boiling in micro-scale channels - Synthesized literature review

Autor(es)

Tibirica, Cristiano Bigonha ; Ribatski, Gherhardt

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID; v. 36, n. 2, p. 24-pg., 2013-03-01.

Resumo

This paper presents a synthesized review on the recent literature concerning micro-scale flow boiling. The topics covered are macro- to micro-scale transition, flow patterns, pressure drop, heat transfer coefficient, critical heat flux, superficial void fraction and liquid entrainment. The analyses revealed some characteristics common to micro-scale two-phase flow, i.e. absence of stratified flow, predominance of annular flow over all saturated region, uniform liquid film thickness during horizontal flows, reduced liquid entrainment, high heat transfer coefficients and pressure drops. Despite the importance of liquid entrainment and void fraction in predictive methods, there is a lack of experimental results for these parameters in the micro-scale literature. Important accomplishments concerning the investigation of micro-scale flow boiling have been obtained over the last two decades, but some aspects, including local physical mechanisms related to heat transfer, onset of dryout and flow boiling instabilities still remain unclear. (C) 2012 Elsevier Ltd and IIR. All rights reserved. (AU)

• Processo FAPESP: 05/60031-0 - Estudo teórico-experimental da ebulição convectiva de refrigerantes halogenados no interior de micro-canais
• Beneficiário: Gherhardt Ribatski
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 11/01372-3 - Investigação de instabilidades durante a ebulição convectiva no interior de microcanais
• Beneficiário: Cristiano Bigonha Tibirica
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 11/50176-2 - Mitigação da emissão de gases de efeito estufa em sistemas de refrigeração mediante a utilização de gases com baixo GWP e a aplicação de micro e nanotecnologias
• Beneficiário: Gherhardt Ribatski
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Regular