Earticle

초록

영어

High Temperature Superconductor power cable systems are being developed actively to solve the problem of increasing power demand. With increases in the unit length of the High Temperature Superconductor power cable, it is necessary to develop highly efficient and reliable cryogenic pumps to transport the coolant over long distances. Generally, to obtain a high degree of efficiency, the cryogenic pump requires a high pressure rise with a low flow rate, and a partial emission type pump is appropriate considering its low specific speed, which is different from the conventional centrifugal type, full emission type. This paper describes the design of a partial emission pump to circulate subcooled liquid nitrogen. It consists of an impeller, a circular case and a diffuser. The conventional pump and the partial emission pump have different features in the impeller and the discharge flow passage. The partial emission pump uses an impeller with straight radial blades. The emission of working fluid does not occur continuously from all of the impeller channels, and the diffuser allows the flow only from a part of the impeller channels. As the area of the diffuser increases gradually, it converts the dynamic pressure into static pressure while minimizing the loss of total pressure. We used the known numerical method for the optimum design process and made a CFD analysis to verify the theoretical performance.

목차

Abstract
 1. INTRODUCTION
 2. DESIGN OF THE PARTIAL EMISSION PUMP
  2.1. Selection of pump type
  2.2. Design specifications
  2.3 Shape design
  2.4 Flow simulation
 3. ANALYSIS RESULT
 4. CONCLUSION
 REFERENCES

키워드

저자

• Jinwoo Lee [ Changwon National University, Changwon, Korea ]
• Yonghyun Kwon [ Changwon National University, Changwon, Korea ]
• Changhyeong Lee [ Changwon National University, Changwon, Korea ]
• Jungdong Choi [ Changwon National University, Hi-tech, Changwon, Korea ]
• Seokho Kim [ Changwon National University, Changwon, Korea ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537