Abstract
This paper aims at discussing the hydrodynamics and heat transfer in gas-liquid microscale systems. A new approach for the determination of the flow pattern, based on measuring the statistical characteristics of gas-liquid flow is proposed that can be used for flow pattern map design. The characteristics of heat transfer during upflow boiling in microchannel heat exchangers that operate at low wall superheat are discussed. A novel method for prediction of the flow boiling heat transfer which accounts the heat transfer enhancement due to formation of the thin curved liquid film and surface waves is presented. The characteristics of heat transfer during subcooled flow boiling in microchannel heat sink designed for high heat flux removal are discussed and method for heat transfer prediction is proposed.
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