Two-phase Flow Characteristics of Refrigerant Flows in a Microchannel Heat Exchanger

摘要

Microchannel surfaces have been shown to be effective in thermal managemetn of electronic components. Such channels are often 20 to 200 μm in width and depth. The large number of channels per unit width of the surface offers a signficantly higher heat transfer area. A large number of variables, however, control the two-phase flow heat transfer coefficient. Specifically, the phenomenon surrounding the bubble generation plays a very important role in tow-phase flow heat transport.