Investigations of energy separation effect in vortex tube for different gases

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Abstract

The paper aims to investigate the energy separation effect of gases such as natural gas to vortex tube. Energy separation phenomena of different gases were investigated by means of three-dimensional Computational Fluid Dynamics (CFD) method. Flow fields of natural gas, air, nitrogen, et al were simulated. The main factors that affect the energy separation were found. With cold mass fraction being 0.7 and pressure drop ratio being 3.90, the results show the effect can be divided into three intervals in terms of the freedom degrees. The first interval is filled with monatomic gas at 50 °C to 60 °C; the second diatomic gas at40 °C to 50 °C; and the third polyatomic gas at 0 °C to 40 °C. In monatomic gas and diatomic gas, the smaller the gas specific heat capacity is, the better effect will be. However, in polyatomic gas, bigger specific heat capacity ensures better energy separation.

Original languageEnglish
Title of host publicationApplied Energy Technology
Pages1227-1233
Number of pages7
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
  • Freedom degree
  • Specific heat capacity
  • Vortex tube
  • Working fluid

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