Plate-fin Heat-exchangers for a 10 kW Brayton Cryocooler and a 1 km HTS Cable

Autor:	Kyung Hyun Gwak, Si-Dole Hwang, Se-Yong Jung, Hyung Suk Yang, Ho-Myung Chang
Rok vydání:	2015
Předmět:	Thermal efficiency Materials science Nuclear engineering Thermodynamics Physics and Astronomy(all) Brayton cryocooler Cryocooler Liquid nitrogen Brayton cycle Fin (extended surface) superconducing cable Refrigerant Heat exchanger Water cooling anti-freeaing plate-fin
Zdroj:	Physics Procedia. 67:221-226
ISSN:	1875-3892
DOI:	10.1016/j.phpro.2015.06.038
Popis:	Plate-fin heat exchangers (PFHX) are designed and fabricated for a cryogenic cooling system, serving for a 10 kW Brayton cryocooler and a 1 km HTS transmission cable under development in Korea. To achieve compactness and thermal efficiency at the same time, a recuperative HX for Brayton cycle and a sub-cooling HX of liquid nitrogen for HTS cable are designed as integrated parts. A key design feature is focused on the coldest part of sub-cooling HX, where the streams of liquid nitrogen and refrigerant (helium gas) are arranged as two-pass cross-flow so that the risk of freeze-out of liquid nitrogen can be reduced. Details of hardware PFHX design are presented and discussed towards its immediate application to the HTS cable system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f98a0a86d3c293bd4535fcf142c8a142 https://doi.org/10.1016/j.phpro.2015.06.038 Zobrazit plný text záznamu