Mixed refrigerant cycle with neon, hydrogen, and helium for cooling sc power transmission lines

Kloeppel, S; Dittmar, N.; Haberstroh, Ch.; Quack, H.

doi:10.1088/1757-899x/171/1/012019

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…In previous studies of working systems at a temperature level of 20...50K a neon, helium and hydrogen mixtures were used for cryostatting Kloeppel et al, 2017;Kloeppel et al, 2015;Zhoutuo et al, 2018). In these papers, the work of cryogenic systems on a mixture of neon with helium and hydrogen-based on balance equations was investigated.…”

Section: Innovative Part Of the Workmentioning

confidence: 99%

2H-Ne-He as the Working Fluid Components In Cryogenic Systems

Dalakov¹,

Aleksandra²,

Rozhentsev

et al. 2020

Smart Energ Sustain Env

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Recently with the increasing demand for isotopic materials, the development of customized refrigeration units which allows temperature stabilization, or cryostatting in the temperature range of 30…50 K became necessary. The required temperature stabilization depends on the isotope and process type and need to be performed at different temperatures. Thus, it is obvious that the development of a reliable and efficient refrigeration unit operating in the temperature range of 30…50 K is a relevant objective. This paper presents the result of a preliminary study of the cryogenic system designed for the cold production in the temperature range of 20...50 K. Structurally, the system is designed as a cascade of two refrigeration machines using a mixed refrigerant media as coolant. The Linde-Hampson refrigeration unit, which generates cold at a temperature level of about 90...100 K, is the upper high-temperature stage of the refrigeration cascade. The working fluid of the upper stage is a multicomponent zeotropic mixture of hydrocarbons. The working mixture is compressed in a hermetic lubricated compressor with a moderate compression ratio and a maximum discharge pressure of up to 30 bar. The lower "cryogenic" stage of the system implements the Bell-Coleman cycle. A three-component zeotropic mixture 2H-Ne-He is used as the working fluid of the low-temperature stage, which ensures the operability of the "cryogenic" stage of the system in the temperature range of 20...90 K. The current paper presents the design diagrams and thermodynamic cycles of the system and its elements. The rationale for selection of the refrigerant mixture and a preliminary analysis of the system components are reported.

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Section: Innovative Part Of the Workmentioning

confidence: 99%

2H-Ne-He as the Working Fluid Components In Cryogenic Systems

Dalakov¹,

Aleksandra²,

Rozhentsev

et al. 2020

Smart Energ Sustain Env

View full text Add to dashboard Cite

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“…For instance, as an alternative to kerosene, liquid hydrogen is used for rocket propulsion systems in space applications [71] and for unmanned aeronautic vehicles [72]. Another area is the semiconductor industry [73]. There is no need for liquid hydrogen in this area, but a minimum 99.999 mol.% extremely high purities are required, and this is achieved by a temperature close to liquid hydrogen temperature in pre-purification at ambient conditions and fine purifications at cryogenic conditions.…”

Section: Liquid Hydrogenmentioning

confidence: 99%

Sıvı hidrojenli taşıtlar için yardımcı bir klima sistemi

Uğurlu

2019

International Journal of Advances in Engineering and Pure Sciences

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Current Vehicle Air Conditioning (VAC) systems, which are operated by compressors driven by Internal Combustion Engines (ICEs) or batteries, increase the fuel consumption and emissions depending on the thermal load of the vehicle passenger cabin. Since decreasing the thermal load of the vehicle will decrease the fuel consumption and emissions, studies in this area is very important from the economic and environmental aspects. In this study, an Auxiliary Air Conditioning (AAC) system for Internal Combustion Engine Vehicles (ICEVs) or Fuel Cell Vehicles (FCVs) that store Liquid Hydrogen (LH 2) as a powering source has been proposed to make contribution to the works in this significant area. ICEVs were evaluated as Gasoline Equivalent Hydrogen Internal Combustion Engine Vehicles (GEHICEVs) and Diesel Equivalent Hydrogen Internal Combustion Engine Vehicles (DEHICEVs) considering their average fuel consumption rates according to the New European Driving Cycle (NEDC). According to the analyses, approximate hydrogen consumption values have been found that reach 0.7 g/s for GEHICEVs, 1.6 g/s for DEHICEVs, and 0.6 g/s for FCVs with maximum cooling rates of 326 W, 704 W, and 250 W, respectively.

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