Dynamic simulation of the helium refrigerator/liquefier for LHD

Autor:	Minoru Nobutoki, Toshiyuki Mito, K. Ooba, Ryuji Maekawa
Rok vydání:	2005
Předmět:	Liquid helium Computer science Nuclear engineering Turboexpander Refrigerator car General Physics and Astronomy Helium-3 refrigerator law.invention Dynamic simulation law Heat exchanger General Materials Science Gas compressor Cryogenic processor
Zdroj:	Cryogenics. 45:199-211
ISSN:	0011-2275
DOI:	10.1016/j.cryogenics.2004.10.001
Popis:	A real-time dynamic simulation has been carried out for the 10 kW class helium refrigerator/liquefier of Large Helical Device (LHD) at National Institute for Fusion Science (NIFS). The refrigerator consists of eight screw compressors, seven expansion turbines, fourteen heat exchangers and a 20 m 3 liquid helium reservoir. A simulation model was implemented to Cryogenic Process REal-time SimulaTor (C-PREST), developed as a platform for the plant process study and optimization. Validity of the simulation model has been confirmed based on the design values as well as the results of commissioning tests. This paper describes the cooldown process and expansion turbine trips during the operation. Difficulties of dynamic simulation for the large cryoplant are also discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9cc9e4086de64ee4037d16e71e99ecb4 https://doi.org/10.1016/j.cryogenics.2004.10.001 Zobrazit plný text záznamu Full Text from ScienceDirect