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
Energy Savings in Air Conditioning System Using Ejector: An Overview
TL;DR: In this article, two ejector configurations were described: ejector refrigeration cycle and ejector as an expansion device, which can be applied in the vapor compression refrigeration system to improve the performance of the system.
Journal ArticleDOI
Extremum analysis based on exergy and economic principle for ejector-absorption cycles combined with regenerative organic-Rankine and gas-turbine cycles
A.D. Bhowmick,Balaram Kundu +1 more
TL;DR: In this article , a combined cooling and power cycle is proposed for the establishment of a new system for the waste heat recovery process, which consists of a gas turbine coupling a heat recovery steam generator with the regenerative organic Rankine cycle and an ejector-absorption refrigeration cycle.
Journal ArticleDOI
An improved thermodynamic model for supersonic real-gas ejectors using the compound-choking theory
TL;DR: In this article, a new state-of-the-art thermodynamic model based on the compound-choking theory is presented, which is able to properly integrate the adequate physics that takes place within the device.
Journal ArticleDOI
Energy and exergy analysis of compact power generation and hybrid solar energy-waste heat-based triple effect ejector-vapor absorption refrigeration cycle
Raj Kumar,Anil Kumar +1 more
TL;DR: In this paper, an NH3-H2O ejector-absorption refrigeration cycle and an R-152a ejector cooling cycle were employed with a renewable energy power generator to make a proposed compact power generation and triple effect ejectorabsorption cooling cycle.
Journal ArticleDOI
One dimensional steam ejector model based on real fluid property
TL;DR: In this article, a one-dimensional ejector model based on real fluid properties is proposed to design the steam ejector geometries and to predict its performance, which can efficiently be used to design ejector geometry and predict the performance in terms of entrainment ratio and critical condenser pressure.
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.