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
Solar ejector cooling systems: A review
TL;DR: The most important aspects of the design, operation and performance of ejector devices and solar ejector cooling cycles are discussed and the most important conclusions are outlined.
Journal ArticleDOI
Thermodynamic analysis of a combined power/refrigeration cycle: Combination of Kalina cycle and ejector refrigeration cycle
TL;DR: In this paper, a new power and refrigeration cycle is investigated which is a combination of a Kalina cycle and an ejector refrigeration Cycle (ERC) and the results show that thermal efficiency of the combined cycle increases with increasing turbine inlet temperature and concentration of ammonia-water solution but decreases with rising condenser outlet temperature and heat exchanger pressure.
Journal ArticleDOI
An investigation of thermo-compressor design by analysis and experiment: Part 1. Validation of the numerical method
Navid Sharifi,Masoud Boroomand +1 more
TL;DR: In this paper, two numerical schemes on the basis of axisymmetric and three dimensional assumptions are implemented to analyze the performance parameters of a conventional TVC and compared with the experimental measurements obtained from an industrial desalination unit.
Journal ArticleDOI
Experimental study of a low grade heat driven ejector cooling system using the working fluid R245fa
TL;DR: In this paper, an operation and performance evaluation of an ejector-based refrigeration system subjected to external constraints and allowing for components interactions to be accounted for is presented, relying on the identified most influential parameters, effects of generator conditions in terms of superheat, pressure and flow rate resulting from the imposed heat source temperature constraints on the condenser and evaporator conditions are shown to affect ejector operation efficiency as well as overall system performance.
Journal ArticleDOI
Parametric study on interaction of blower and back pressure control valve for a 80-kW class PEM fuel cell vehicle
TL;DR: In this paper, a numerical study on the performance of the polymer electrolyte membrane (PEM) fuel cell vehicle with variable operating pressure was conducted to investigate the effect of blower and backpressure control valve.
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.