Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Effect of Mixed Jet with Primary Nozzle Area Ratio of Ejector on Oxygen Transfer Characteristics

산소 전달 특성에 미치는 이젝터 구동 노즐 면적비에 따른 혼합 분류의 영향

  • 박상규 (전남대학교 기계설계공학부) ;
  • 양희천 (전남대학교 기계설계공학부)
  • Received : 2022.06.28
  • Accepted : 2022.08.08
  • Published : 2022.09.30
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Abstract

The objective of this is to experimentally investigate the effect of mixed jet on the oxygen transfer characteristics with the primary nozzle area ratio of an annular nozzle ejector for the application of a microbial fuel cell. A direct visualization method with a high speed camera system was used to capture the horizontal mixed jet images, and a binarization technique was used to analyze the images. The clean water unsteady state technique was used for the oxygen transfer measurement. The air-water mixed jet discharging into a water tank behaved similar to a buoyancy or horizontal jet with the primary nozzle area ratio. It was found that an optimum primary nozzle area ratio was observed where the oxygen transfer performance reached its maximum value due to the decrease of air volume fraction and the increase of jet length and air bubble dispersion.

Keywords

Acknowledgement

이 논문은 2019년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임(NRF-2019R111A3A01057227).

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