Investigations of energy separation effect in vortex tube for real gases

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Abstract

This paper aims to investigate real gases energy separation effect such as real natural gas, CH4 and C2H4 in vortex tube. Energy separation phenomena of real natural gas (RNG) were investigated by means of three-dimensional Computational Fluid Dynamics (CFD) method. Flow fields of ideal natural gas (ING), or RNG in low and high pressure were simulated. The results main factors were found that affect the separation effect. At the same time, this paper has illustrated the effect and tendency of energy separation with real gas in the tube under the same cold mass fraction and pressure ratio. The results show low pressure ideal gas and real gas energy separation effect difference about 3-4°C, the real gas effect is not obvious; High pressure real natural gas (HPRNG) and ideal gas (HPING) effect difference is 13-14°C, the real gas effect is obvious; CH4 (LRCH4)and C2H4 (HRC2H4)energy separation effect is obvious and effect of real gas is generated.

Original languageEnglish
Title of host publicationApplied Energy Technology
Pages1293-1300
Number of pages8
DOIs
StatePublished - 2013
Event2013 2nd International Conference on Energy and Environmental Protection, ICEEP 2013 - Guilin, China
Duration: 19 Apr 201321 Apr 2013

Publication series

NameAdvanced Materials Research
Volume724-725
ISSN (Print)1022-6680

Conference

Conference2013 2nd International Conference on Energy and Environmental Protection, ICEEP 2013
Country/TerritoryChina
CityGuilin
Period19/04/1321/04/13

Keywords

  • Energy separation
  • Real gas
  • Specific heat capacity
  • The acentric factor
  • Vortex tube

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