ANALYSIS OF JOULE-THOMSON EFFECT OF CARBON DIOXIDE LEAKAGE THROUGH VERTICAL LEAKY PATHWAYS

Measurements have been made of the amounts of cold and heat produced by a vortex tube operated with methane containing some carbon dioxide, and with Algerian natural gas, which has a high methane content. The effects of gas supply temperature and pressure have been investigated. The contribution of the Joule–Thomson effect to the total cooling has been calculated and allowed for. Vortex effect cooling decreases with lowering of the supply temperature and probably disappears at the gas liquefaction point. It is dependent on the pressure expansion ratio across the tube. The findings are compared with those of other workers and those predicted by vortex tube theories.

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The carbon dioxide leakage from chambers measured using sulfur hexafluoride

Environmental and Experimental Botany ◽

10.1016/s0098-8472(99)00051-9 ◽

2000 ◽

Vol 43 (2) ◽

pp. 101-110 ◽

Cited By ~ 12

Author(s):

David T Tingey ◽

Ronald S Waschmann ◽

Donald L Phillips ◽

David M Olszyk

Keyword(s):

Carbon Dioxide ◽

Sulfur Hexafluoride ◽

Carbon Dioxide Leakage

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The Joule-Thomson Effect for Refrigerants with Dopants of the Fullerenes and Carbon Nanotubes

Refrigeration Engineering and Technology ◽

10.15673/ret.v54i4.1213 ◽

2018 ◽

Vol 54 (4) ◽

pp. 38-44

Author(s):

М. Petrenko ◽

S. Artemenko ◽

D. Nikitin

Keyword(s):

Carbon Dioxide ◽

Carbon Nanotubes ◽

Thermodynamic Properties ◽

Phase Equilibria ◽

Critical Point ◽

Reduced Form ◽

Thomson Effect ◽

Nanoparticle Concentration ◽

Classical Fluids ◽

Working Media

The importance of thermodynamic and phase behavior of working fluids embedded with nanostructured materials is fundamental to new nanotechnology applications. The fullerenes (C60) and carbon nanotubes (CNT) adding to refrigerants change their thermodynamic properties the Joule – Thomson effect such as dislocation of critical point, gas – liquid equilibria shift at alias. Algorithm of refrigerant thermodynamic property calculations based on the NIST (National Institute of Standards and Technologies) equation of state at different carbon nanotube concentrations is proposed. Thermodynamic properties of carbon dioxide in the C60 and CNT presence are given. Considering the extremely large number of different both nanoparticle types and reference fluids, it is obvious that there is need for developing theoretically sound methods of the prompt estimation thermodynamic properties and phase equilibria for emerging working media. The effect of nanoparticles on the critical point shift for classical fluids doped by nanoparticles is examined. The regular and singular parts of thermodynamic surface of reference fluid and nanofluid (volume nanoparticle concentration < 5%) are suggested to coincide in the reduced form. The shift of critical point for nanoliquids of industrial interest is theoretically predicted. Results of calculations of phase equilibria for some nanofluids are described.

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The effects of carbon dioxide leakage on fractures, and water quality of potable aquifers during geological sequestration of CO2

Chinese Journal of Geochemistry ◽

10.1007/bf02839847 ◽

2006 ◽

Vol 25 (S1) ◽

pp. 58-58 ◽

Cited By ~ 1

Author(s):

Wei Zhang ◽

Yilian Li ◽

Tianfu Xu ◽

Wei Qiang ◽

Shangping Xiao

Keyword(s):

Carbon Dioxide ◽

Water Quality ◽

Geological Sequestration ◽

Sequestration Of Co2 ◽

Carbon Dioxide Leakage

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The Evaluation of the Equations of State Used for the Joule-Thomson Effect Analysis in the Dry Gas Seal

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.752-753.391 ◽

2015 ◽

Vol 752-753 ◽

pp. 391-395 ◽

Cited By ~ 1

Author(s):

Cheng Xiang Deng ◽

Peng Yun Song

Keyword(s):

Experimental Data ◽

Carbon Dioxide ◽

Equation Of State ◽

Equations Of State ◽

Gas Flows ◽

Thomson Effect ◽

Effect Analysis ◽

Real Gas ◽

Dry Gas Seal ◽

Thomson Coefficient

The Joule-Thomson (JT) effect will occur when the gas flows through the components of filters, valves, orifices and end faces in the system of the dry gas seal, which may cause the temperature of the seal gas to decrease, and even the emergence of liquid condensation. Generally, the Joule-Thomson effect is reflected by the Joule-Thomson coefficient. As to the hydrogen, nitrogen, carbon dioxide and air, which are often met in the dry gas seal, the corresponding Joule-Thomson (JT) coefficients were calculated by four classical equations of state (EOS) of VDW, RK, SRK and PR, which are compared with the experimental data in the literature. The results show that the JT coefficients calculated by RK equation are most close to the experimental data in the literature, whose relative error is lowest and less than 4%. When the JT effect of real gas in the dry gas seal is analyzed, the RK equation of state is recommend.

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