Investigation of effective parameters on the performance of the helium liquefaction cycle

Larijani, M. A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.18280/ijht.370410
  3. Publisher: International Information and Engineering Technology Association , 2019
  4. Abstract:
  5. Due to its unique properties, helium has wide application in different industries and scientific fields, which has turned it into a strategic material. Helium liquefaction plants include wide temperature range from 300 k to 4.2 k, so these plants have high energy consumption. A lot of studies have done to optimize the operation of these cycles. In this research, an exergy analysis is performed for a liquid helium production plant. The optimal performance of 3 and 4 stage cycles is extracted using parametric study and the results are compared with those of Collins dual-expander cycle. The results show that by increasing the number of cooling stages, not only the compressor optimum discharge pressure is reduced, but also the cycle efficiency dramatically increases and the power consumption of the cycle decreases. Further, a sensitivity analysis of the exergy efficiency of the 2, 3 and 4 expander cycles is compared to the heat exchangers effectiveness, expander’s efficiency and the input flow rate to the expanders. © 2019 International Information and Engineering Technology Association. All rights reserved
  6. Keywords:
  7. Cold box ; Cryogenic process ; Cycle efficiency ; Helium liquefaction ; Parametric study ; Energy efficiency ; Energy utilization ; Exergy ; Liquefaction ; Liquefied gases ; Sensitivity analysis ; Superfluid helium ; Cold boxes ; Exergy Analysis ; Helium
  8. Source: International Journal of Heat and Technology ; Volume 37, Issue 4 , 2019 , Pages 1009-1018 ; 03928764 (ISSN)
  9. URL: http://www.iieta.org/journals/ijht/paper/10.18280/ijht.370410