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Commissioning of the Cryogenic Phase Equilibria Test Stand CryoPHAEQTS

Tamson, J.; Blanck, P.; Grohmann, S.

Abstract (englisch):
Medium-sized cryogenic applications such as local hydrogen liquefaction or HTS power applications require temperatures below 77 K at some kW cooling power. These conditions are efficiently reached by cryogenic mixed refrigerant cycles (CMRC). The CMRC development relies on physical property data of cryogenic fluid mixtures that is not available for most binary and multi-component systems. The cryogenic phase equilibria test stand CryoPHAEQTS provides precise physical property data of cryogenic fluid mixtures at temperatures from 15 K to 300 K and at pressures up to 150 bar. It also allows flammable mixtures (e.g. containing hydrogen) or oxidizing mixtures (e.g. containing oxygen). Vapor-liquid equilibria (VLE), vapor-liquid-liquid equilibria (VLLE) and the liquidus line of solid-liquid equilibria (SLE) are obtained by direct sampling from the equilibrium cell and analysis by gas chromatography. The equilibrium cell offers optical access by 4 windows to identify the coexisting phases. The cell temperature is set by a pulse-tube cryocooler and a counter-heater. As a unique feature, the specific heat capacity of the vapor phase in equilibrium is measured by the combination of a novel thermal and a Coriolis type flow meter. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000121283
Veröffentlicht am 15.07.2020
DOI: 10.1088/1757-899x/755/1/012150
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Thermodynamik und Kältetechnik (ITTK)
Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1757-899X
KITopen-ID: 1000121283
HGF-Programm 37.06.02 (POF III, LK 01)
New Power Network Technology
Erschienen in IOP conference series / Materials science and engineering
Band 755
Seiten 012150
Bemerkung zur Veröffentlichung Advances in Cryogenic Engineering: Proceedings of the Cryogenic Engineering Conference (CEC) 2019, 21-25 July 2019, Hartford, Connecticut, USA
Vorab online veröffentlicht am 30.06.2020
Nachgewiesen in Scopus
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