Advanced SearchSearch Tips
Design of partial emission type liquid nitrogen pump
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Design of partial emission type liquid nitrogen pump
Lee, Jinwoo; Kwon, Yonghyun; Lee, Changhyeong; Choi, Jungdong; Kim, Seokho;
  PDF(new window)
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.
Cryogenic Pump;Partial Emission Pump;Cryogenic Turbomachine;
 Cited by
Jae-Ho Kim, Minwon Park, In-Keun Yu, "Development of Real Time Protective Coordination Algorithm for HTS Power Cable," IEEE Trans. Appl. Supercond., vol. 25, no. 3, pp. 1-4, 2015.

Masuda, T., Yumura, H., Watanabe, M., "Recent progress of HTS cable project," Physica. C, vol. 468, no. 15/20, pp. 2014-2017, 2008. crossref(new window)

Chang-Hyeong Lee, Dong-Min Kim, Hyung-Suk Yang, Seok-Ho Kim, "Conceptual design of cryogenic turbo expander for 10 kW class reverse Brayton refrigerator," Progress in Superconductivity and Cryogenics, vol. 17, no. 3, pp. 41-46, 2015.

O. E. Balje, Turbomachines, JOHN WILEY & SONS, pp. 3-436, 1981.

Design & Manufacture of Specialty Turbomachinery, Barber Nichols

A. T. Sayers, Hydraulic and Compressible Flow Turbomachines, McGraw-Hill, pp. 1-70, 1992.

U. M. Barske, "Development of some unconventional centrifugal pumps." Proceedings of the Institution of Mechanical Engineers, vol. 174, no. 1, pp. 437-461, 1960. crossref(new window)

Frank M. White, Fluid Mechanics 7th Edition in SI units, McGraw-Hill, pp. 423-483, 2012.