Optimization of Operating Parameters of a Nitrogen Liquefier Functioning as a Unit of a Liquid Methane Supercooling System.

Autor:	Korobkov, A. A., Kulik, M. V., Sergeev, S. S., Smorodin, A. I.
Předmět:	SUPERCOOLING SCREW compressors NITROGEN LAUNCH vehicles (Astronautics) LIQUIDS
Zdroj:	Chemical & Petroleum Engineering; Jul2022, Vol. 58 Issue 3/4, p285-292, 8p
Abstrakt:	The problem of thermodynamic optimization of the operating parameters of a nitrogen liquefier functioning as a unit of a liquid methane supercooling system is identified and solved. Solution of this problem enabled determination of the following: the specific work required for liquefaction of 1 kg of nitrogen in schemes with oil- and water-filled compressors, characteristics of heat exchange equipment and expansion-compression unit, and operating parameters at all calculation points. It was found that waterfilled screw compressor helps reduce specific liquefaction work by 19%. Direct flow pressure of 1.2 MPa and throttle flow fraction of 0.14 are the optimum parameters for nitrogen liquefaction. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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