In this study, a 1D analysis has been presented for the prediction of ejector performance at critical mode operation. The new triple-choking model has been developed using the governing equations of the compressible fluids and thermodynamics properties based on the frictional adiabatic fluid study. A new approach has been introduced to consider the frictional effects on the mixing efficiencies by extending the 1D ejector theory. A very good agreement has been reported for the R141b and steam experimental data at critical mode operation. Furthermore, simulated results have been compared with some of the recent theoretical models. In addition, the influence of operation conditions on the ejector performance and the required cross-sectional area of the mixing chamber has been showed. Finally, the influence of the operation conditions (such as generator, condenser, and evaporator temperatures) and the size of ejector on the mixing efficiency have been studied.
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e-mail: sargolzaei@um.ac.ir
e-mail: mr_pj_7@yahoo.com
e-mail: saljoughi@gmail.com
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June 2010
Research Papers
Triple-Choking Model for Ejector
J. Sargolzaei,
J. Sargolzaei
Department of Chemical Engineering,
e-mail: sargolzaei@um.ac.ir
Ferdowsi University of Mashhad
, P.O. Box 9177948944, Mashhad, Iran
Search for other works by this author on:
M. R. Pirzadi Jahromi,
M. R. Pirzadi Jahromi
Department of Chemical Engineering,
e-mail: mr_pj_7@yahoo.com
Ferdowsi University of Mashhad
, P.O. Box 9177948944, Mashhad, Iran
Search for other works by this author on:
E. Saljoughi
E. Saljoughi
Department of Chemical Engineering,
e-mail: saljoughi@gmail.com
Ferdowsi University of Mashhad
, P.O. Box 9177948944, Mashhad, Iran
Search for other works by this author on:
J. Sargolzaei
Department of Chemical Engineering,
Ferdowsi University of Mashhad
, P.O. Box 9177948944, Mashhad, Irane-mail: sargolzaei@um.ac.ir
M. R. Pirzadi Jahromi
Department of Chemical Engineering,
Ferdowsi University of Mashhad
, P.O. Box 9177948944, Mashhad, Irane-mail: mr_pj_7@yahoo.com
E. Saljoughi
Department of Chemical Engineering,
Ferdowsi University of Mashhad
, P.O. Box 9177948944, Mashhad, Irane-mail: saljoughi@gmail.com
J. Thermal Sci. Eng. Appl. Jun 2010, 2(2): 021009 (10 pages)
Published Online: November 8, 2010
Article history
Received:
May 3, 2010
Revised:
October 3, 2010
Online:
November 8, 2010
Published:
November 8, 2010
Citation
Sargolzaei, J., Pirzadi Jahromi, M. R., and Saljoughi, E. (November 8, 2010). "Triple-Choking Model for Ejector." ASME. J. Thermal Sci. Eng. Appl. June 2010; 2(2): 021009. https://doi.org/10.1115/1.4002752
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