ISSN Online: 2377-424X
International Heat Transfer Conference 12
Flow Boiling Heat Transfer Coefficient In Minichannels − Correlation and Trends
要約
The flow boiling heat transfer in small diameter passages is being applied in many advanced designs, including electronics cooling, fuel cell heat exchangers, and other high heat flux dissipation applications. A number of studies are available in literature comparing flow patterns in minichannels to those observed in conventional channels. The present study is focused on comparing the flow boiling heat transfer coefficient with the correlations developed for conventional channels. It is found that the Kandlikar (1990) correlation developed for
conventional diameter tubes is applicable for minichannels as well. The trends in the heat transfer coefficient with quality are also found to be similar to the conventional diameter tubes. One notable difference being the use of laminar flow equation for single phase liquid only heat transfer coefficient at Re below 1500-2300 for small diameter tubes.