CHF enhancement partitioning based on surface wettability and porosity on CeO2 nanoparticle coated surface
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- CHF enhancement partitioning based on surface wettability and porosity on CeO2 nanoparticle coated surface
- Kim, J.Y.; Bang, In Cheol
- Issue Date
- American Institute of Physics Inc.
- AIP ADVANCES, v.9, no.9, pp.095040
- The experimental boiling critical heat flux (CHF) behavior of CeO2 nanoparticles coated surface under various deposition condition was experimentally measured. The CHF behavior of CeO2 nanoparticles coated surface was analyzed based on coupled analysis of surface wettability and capillarity. The surface conditions were modulated by changing the volume concentration and deposition time during the nanoparticles coating process. The convex shaped CHF behavior was observed along with the volume concentration of nanofluid. The analysis based on a single parameter such as surface wettability and capillarity couldn't explain the complex CHF behavior. The novel way to explain the complex CHF behaviors of CeO2 nanoparticles coated surface is proposed. The model in this study considered the coupling behavior of surface rewetting and liquid transport by capillary wicking motion through the CHF enhancement partitioning. This efforts for the coupling of different physical phenomena on the boiling crisis condition will be beneficial to precise prediction of boiling CHF values on the engineered heater surface.
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