Triple-Choking Model for Ejector

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....

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Veröffentlicht in:Journal of thermal science and engineering applications 2010-06, Vol.2 (2)
Hauptverfasser: Sargolzaei, J., Pirzadi Jahromi, M. R., Saljoughi, E.
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container_title Journal of thermal science and engineering applications
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creator Sargolzaei, J.
Pirzadi Jahromi, M. R.
Saljoughi, E.
description 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.
doi_str_mv 10.1115/1.4002752
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subjects Chambers
Computational fluid dynamics
Cross sections
Evaporation
Fluid flow
Mathematical analysis
Mathematical models
Thermodynamic properties
title Triple-Choking Model for Ejector
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