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Performance of large-scale helium refrigerators subjected to pulsed heat load from fusion devices

Abstract

The immediate effect of pulsed heat load from fusion devices in helium refrigerators is wide variation in mass flow rate of low pressure stream returning to the cold-box. In this paper, a four expander based modified Claude cycle has been analyzed in quasi steady and dynamic simulations using Aspen HYSYS to identify critical equipment that may be affected due to such flow rate fluctuations at the return stream and their transient performance. Additional constraints on process parameters over steady state design have been identified. Suitable techniques for mitigation of fluctuation of return stream have also been explored. (author)
Authors:
Dutta, R.; Ghosh, P.; Chowdhury, K. [1] 
  1. Cryogenic Engineering Centre, Indian Institute of Technology, Kharagpur (India)
Publication Date:
Jul 01, 2012
Product Type:
Conference
Resource Relation:
Conference: ICEC 24: 24. international cryogenic engineering conference, Fukuoka (Japan), 14-18 May 2012, ICMC 2012: International cryogenic materials conference 2012, Fukuoka (Japan), 14-18 May 2012; Other Information: 5 refs., 3 figs., 2 tabs.; Related Information: In: ICEC 24 - ICMC 2012: Proceedings of 24th international cryogenic engineering conference and international cryogenic materials conference 2012| 932 p.
Subject:
42 ENGINEERING; CLOSED PLASMA DEVICES; DESIGN; HEAT EXCHANGERS; HEATING LOAD; HELIUM; LIMITING VALUES; PARAMETRIC ANALYSIS; PULSE TECHNIQUES; REFRIGERATORS; SUPERCONDUCTING MAGNETS; TURBINES
OSTI ID:
22359277
Research Organizations:
Cryogenics and Superconductivity Society of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
TRN: JP1501827064454
Availability:
Available from Cryogenics and Superconductivity Society of Japan, 6-12-8-302 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. Also available from the Internet at URL http://www.csj.or.jp/en/index.html
Submitting Site:
INIS
Size:
page(s) 625-628
Announcement Date:
Jul 22, 2015

Citation Formats

Dutta, R., Ghosh, P., and Chowdhury, K. Performance of large-scale helium refrigerators subjected to pulsed heat load from fusion devices. Japan: N. p., 2012. Web.
Dutta, R., Ghosh, P., & Chowdhury, K. Performance of large-scale helium refrigerators subjected to pulsed heat load from fusion devices. Japan.
Dutta, R., Ghosh, P., and Chowdhury, K. 2012. "Performance of large-scale helium refrigerators subjected to pulsed heat load from fusion devices." Japan.
@misc{etde_22359277,
title = {Performance of large-scale helium refrigerators subjected to pulsed heat load from fusion devices}
author = {Dutta, R., Ghosh, P., and Chowdhury, K.}
abstractNote = {The immediate effect of pulsed heat load from fusion devices in helium refrigerators is wide variation in mass flow rate of low pressure stream returning to the cold-box. In this paper, a four expander based modified Claude cycle has been analyzed in quasi steady and dynamic simulations using Aspen HYSYS to identify critical equipment that may be affected due to such flow rate fluctuations at the return stream and their transient performance. Additional constraints on process parameters over steady state design have been identified. Suitable techniques for mitigation of fluctuation of return stream have also been explored. (author)}
place = {Japan}
year = {2012}
month = {Jul}
}