Journal ArticleDOI
A 1-D analysis of ejector performance
TLDR
In this paper, a 1D analysis for the prediction of ejector performance at critical-mode operation is carried out, where constant pressure mixing is assumed to occur inside the constant-area section of the ejector and the entrained flow at choking condition is analyzed.Abstract:
A 1-D analysis for the prediction of ejector performance at critical-mode operation is carried out in the present study. Constant-pressure mixing is assumed to occur inside the constant-area section of the ejector and the entrained flow at choking condition is analyzed. We also carried out an experiment using 11 ejectors and R141b as the working fluid to verify the analytical results. The test results are used to determine the coefficients, h p, h s, f p and f m defined in the 1-D model by matching the test data with the analytical results. It is shown that the1-D analysis using the empirical coefficients can accurately predict the performance of the ejectors. q 1999 Elsevier Science Ltd and IIR. All rights reserved.read more
Citations
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Journal ArticleDOI
Enhancement of Entraining Performance on Thermal Vapor Compressor for Multi-Effect Desalination Plants by Swirl Effects of Motive Steam
TL;DR: In this paper, the authors investigate the cases in which the motive steam flows into the primary nozzle with a swirl component and find that there exists an optimum swirl angle that maximizes the entrainment ratio.
Journal ArticleDOI
Investigation of an ejector powered double-effect absorption/recompression refrigeration cycle.
TL;DR: In this paper, the authors investigated the feasibility and eventual improvement in performance of an ejector powered water/lithium bromide double-effect absorption/recompression refrigeration cycle driven by high temperature heat sources.
Journal ArticleDOI
On the validity of a design method for a solar-assisted ejector cooling system
TL;DR: In this article, a solar-assisted ejector cooling system is simulated in order to investigate the validity of a design methodology and an equivalent minimum temperature for the utilizability of the solar system is found, which proves to be different but close to, the vapor generator temperature of the ejector cycle.
Journal ArticleDOI
Artificial neural network model for single-phase real gas ejectors
TL;DR: In this paper, a data-driven artificial neural network (ANN) model was proposed to predict the critical parameters of a supersonic ejector, such as entrainment ratio and operational regime of the ejector.
Journal ArticleDOI
CFD Based Design for Ejector Cooling System Using HFOS (1234ze(E) and 1234yf)
TL;DR: In this article, a 2D axisymmetric supersonic ejector using NIST real gas model integrated in ANSYS Fluent to probe the physical insight and consistent with accurate solutions is presented.
References
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Journal ArticleDOI
An Investigation of Ejector Design by Analysis and Experiment
Journal ArticleDOI
A theoretical and experimental study of a small-scale steam jet refrigerator
TL;DR: In this paper, a small-capacity steam jet refrigerator has been tested with boiler temperatures in the range 120-140°C and the experimental data were found to be within 85% of the theoretical values.
Journal ArticleDOI
A New Ejector Theory Applied to Steam Jet Refrigeration
John T. Munday,David F. Bagster +1 more
Journal ArticleDOI
A small capacity steam-ejector refrigerator: experimental investigation of a system using ejector with movable primary nozzle
Satha Aphornratana,Ian W. Eames +1 more
TL;DR: In this article, an experimental study of a steam-ejector refrigerator using an ejector with a primary nozzle that could be moved axially within the mixing chamber section was performed.
Journal ArticleDOI
Variable geometry ejectors and their applications in ejector refrigeration systems
TL;DR: In this article, the effect of ejector geometries on performance was analyzed for a 5kW steam-jet refrigerator with variable-geometry ejectors, including flow rates, entrainment ratio and ejector geometry.