This report investigates the effect that hydrodynamic cavitation has on heat transfer. The fluid medium is refrigerant R-123 flowing through 227 μm hydraulic diameter microchannels. The cavitation is instigated by the inlet orifice. Adiabatic tests were conducted to study the two-phase cavitating flow morphologies and hydrodynamic characteristics of the flow. Diabatic experiments were performed resulting in surface temperatures under heat fluxes up to 213 W/cm2 and mass velocities from 622 kg/m2s to 1368 kg/m2s. Results were compared to non-cavitating flows at the same mass velocities. It was found that the cavitating flows can significantly enhance the heat transfer. The heat transfer coefficient of the cavitating flows was larger than the non-cavitating flows by as much as 84%.
- Nanotechnology Institute
Hydrodynamic Cavitation and Boiling in Refrigerant (R-123) Flow Inside Microchannels
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Peles, Y, & Schneider, B. "Hydrodynamic Cavitation and Boiling in Refrigerant (R-123) Flow Inside Microchannels." Proceedings of the ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B. Limerick, Ireland. June 19–21, 2006. pp. 1323-1332. ASME. https://doi.org/10.1115/ICNMM2006-96030
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