Enhancement of Subcooled Flow Boiling Heat Transfer with High Porosity Sintered Fiber Metal
| Autor: | Koji Enoki, Edgar Santiago Galicia, Yusuke Otomo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Mass flux
Materials science high porosity 020209 energy subcooled flow boiling Flux 02 engineering and technology boiling heat transfer lcsh:Technology lcsh:Chemistry 0202 electrical engineering electronic engineering information engineering General Materials Science Hydraulic diameter Composite material Porosity Instrumentation lcsh:QH301-705.5 Fluid Flow and Transfer Processes Critical heat flux lcsh:T porous Process Chemistry and Technology fiber metal General Engineering 021001 nanoscience & nanotechnology lcsh:QC1-999 Computer Science Applications Subcooling Superheating Heat flux lcsh:Biology (General) lcsh:QD1-999 sintered fiber metal lcsh:TA1-2040 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) CHF lcsh:Physics |
| Zdroj: | Applied Sciences Volume 11 Issue 3 Applied Sciences, Vol 11, Iss 1237, p 1237 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11031237 |
| Popis: | We conducted experimental research using high-porosity sintered fiber attached on the surface, as a passive method to increase the heat flux for subcooled flow boiling. Two different porous thicknesses (1 and 0.5 mm) and one bare surface (0 mm) were compared under three different inlet subcooling temperatures (30, 50 and 70 K) and low mass flux (150&ndash 600 kg· m&minus 2· s&minus 1) using deionized water as the working fluid under atmospheric pressure. The test section was a rectangular channel, and the hydraulic diameter was 10 mm. The results showed that the heat flux on porous surfaces with a thickness of 1 and 0.5 mm increased by 60% and 40%, respectively, compared to bare surfaces at &Delta Tsat = 40 K at a subcooled temperature of 50 K and mass flux of 300 kg· 1. An abrupt increase in the wall superheat was avoided, and critical heat flux (CHF) was not reached on the porous surfaces. The flow pattern and bubble were recorded with a high-speed camera, and the bubble dynamics are discussed. |
| Databáze: | OpenAIRE |
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