The maximum coefficient of performance (COP) of vortex tubes

Autor:	Anthony G. Straatman, Jeliazko G. Polihronov
Rok vydání:	2015
Předmět:	Physics Work (thermodynamics) Vortex tube Vortex theory Fluid dynamics General Physics and Astronomy Thermodynamics Inflow Mechanics Coefficient of performance
Zdroj:	Canadian Journal of Physics. 93:1279-1282
ISSN:	1208-6045 0008-4204
DOI:	10.1139/cjp-2015-0089
Popis:	In a number of recent publications, it has been shown that the vortex tube effect occurs as a result of the extraction of work from a radial inflow of rotating gas. The delivered energy and its corresponding temperature drop have been derived from first principles. This work studies the cycle of rotational cooling by also considering the process of gas compression and arrives at the maximum theoretical value of the coefficient of performance (COP). For air, the maximum COP of the vortex tube effect is 2.5; it can reach over 15.0 for common refrigerants (e.g., R-218) and 20.0 or higher for other gases (e.g., n-heptane).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48f04dd7a695624276aebc97d5e4f7dc https://doi.org/10.1139/cjp-2015-0089 Zobrazit plný text záznamu Plný text ve formátu PDF