The bio reactors with high efficiency using ejector are widely used in gas-liquid system, This is also due to the high efficiency in gas dispersion resulting in high mass transfer rate and low power requirements. Thus, the new liquid fertilizer manufacturing equipment composed with aeration tank, cycling tank and circulation pump using an ejector was developed. The aim of this study is to investigate the effect of an ejector on the liquid fertilizer manufacturing equipment and to design the optimal ejector for actual application using CFD analysis and experimental method. The results show that the suction air mass flow rate is increased, as the diameter of driving ejector nozzle is smaller and the position of nozzle is toward the exit of an ejector.

Abstract
 1. 서론
 2. 수치해석
  2.1 해석조건 및 변수
  2.2 해석결과 및 고찰
 3. 실험장치 및 실험결과
  3.1 실험장치 및 실험방법
  3.2 실험결과
 4. 결론
 후기
 References

• 안국찬(경남과학기술대학교 자동차공학과) | Kook-Chan Ahn
• 김봉환(경남과학기술대학교 자동차공학과) | Bong-Hwan Kim Corresponding Author
• 강혁재(경남과학기술대학교 일반대학원 자동차공학과) | Hyuk-Jae Kang
• 서재규(에코씨엔피(주)) | Jae-Ku Seo