How to design a cryogenic Joule-Thomson cooling system: case study of small hydrogen lique er
Publish place: Iranian Journal of Hydrogen & Fuel، Vol: 3، Issue: 2
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJHFC-3-2_003
تاریخ نمایه سازی: 21 فروردین 1397
Abstract:
Heat exchangers are the critical components of refrigeration and liquefaction processes. Selection of appropriate operational conditions for the cryogenic recuperative heat exchanger and expansion valve operating in a Joule-Thomsoncooling system results in improving the performance and ef ciency. In the current study, a straightforward procedure is introduced to design an ef cient Joule- Thomson cooling system. Determining the appropriate operational conditions and con guration of streams within the recuperative heat exchanger are discussed comprehensively. A Joule-Thomson cooling system including a helically coiled tube in the tube heat exchanger and expansion valve was considered as a case study. Simulation was performed by a procedure different from the conventional nite element method and the results were validated versus data obtained from a small laboratory hydrogen lique er. In accordance with mathematical modeling performed on the recuperative heat exchanger, it is better to ow low pressure hydrogen inside the inner tube and high pressure hydrogen within the annulus. This arrangement results in needing shorter length heat exchanger tubes as compared with the reverse arrangement.
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Authors
Ali Saberimoghaddam
Department of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan, Tehran, Iran
Mohammad Mahdi Bahri Rasht Abadi
Department of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan, Tehran, Iran