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10006609
Experimental Study on Dehumidification Performance of Supersonic Nozzle
Authors:
Abstract:
Supersonic nozzles are commonly used to purify natural gas in gas processing technology. As an innovated technology, it is employed to overcome the deficit of the traditional method, related to gas dynamics, thermodynamics and fluid dynamics theory. An indoor test rig is built to study the dehumidification process of moisture fluid. Humid air was chosen for the study. The working fluid was circulating in an open loop, which had provision for filtering, metering, and humidifying. A stainless steel supersonic separator is constructed together with the C-D nozzle system. The result shows that dehumidification enhances as NPR increases. This is due to the high intensity in the turbulence caused by the shock formation in the divergent section. Such disturbance strengthens the centrifugal force, pushing more particles toward the near-wall region. In return return, the pressure recovery factor, defined as the ratio of the outlet static pressure of the fluid to its inlet value, decreases with NPR.
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References:

[1] Gas, N. (2005) ‘Supersonic nozzle efficiently separates natural gas components’, Oil & Gas Journal, Vol. 53.
[2] Ashtiani, A.J.; Haghnejat, A.; Sharif, M. and Fazli, A. (2015). Investigation on New Innovation in Natural Gas Dehydration Based on Supersonic Nozzle Technology. Indian Journal of Science and Technology, 8 (S9): 450–454.
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[6] Xingwei, L.; Zhongliang, L. and Yanxia, L. (2015). Numerical Study of the High Speed Compressible Flow with Non-Equilibrium Condensation in a Supersonic Separator. Journal of Clean Energy Technologies. 3 (5): 360-366.
[7] Abdi, M. A.; Jassim, E.; Haghighi, M. and Muzychka, Y. (2010). Applications of CFD in Natural Gas Processing and Transportation. Computational Fluid Dynamics, Book edited by: Hyoung Woo OH. 420. INTECH, Croatia.
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