Abstract
Flow boiling experiments are conducted in oblique-finned microchannels with different oblique angles to investigate its effects on two-phase heat transfer, pressure drop and instabilities. These studies are carried out with FC-72 dielectric fluid at three different oblique angles of 10°, 30° and 50°. Three mass fluxes ranging from 194kg/m2s to 386kg/m2s, and effective heat fluxes from 14.9W/cm2 to 70.0W/cm2 are tested with high-speed flow visualisations to explore the physical boiling phenomenon in the microchannels. Results show that heat transfer performance increases with oblique angles from 10° to 50° due to the increase in secondary channels which promote flow mixing. This causes an increase in pressure drop from 10° to 30° oblique angles due to the increase in flow separation and flow diversion. Pressure drop, however, is almost negligible when the oblique angles are increased from 30° to 50°. As a result, the 50° oblique-finned microchannels presents an attractive option for further parametric studies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
