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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Exergoeconomic Assessment of the Ejector-Based Battery Thermal Management System for Electric and Hybrid-Electric Vehicles
TL;DR: In this paper , the authors compared the ejector-based battery thermal management system (BTMS) compared to the basic BTMS system from a thermal and exergo-economic perspective.
Journal ArticleDOI
Performance analysis of an ejector cooling system with a conventional chilled water system
TL;DR: In this article, a central chilled water system servicing one of the academic buildings at the KFUPM campus located in Dhahran has been modeled numerically to combine with the ejector cooling system.
Journal ArticleDOI
Combined effects of fluid selection and flow condensation on ejector operation in an ejector-based chiller
TL;DR: In this paper, the authors investigated the effect of two-phase flow characteristics inside the ejector of an ejector-based chiller using wet R134a and dry R245fa fluids.
Journal ArticleDOI
Optimization study of a two-stage ejector–diffuser system
Fanshi Kong,Heuy Dong Kim +1 more
TL;DR: The major characteristics of a supersonic two-stage ejector–diffuser system have been investigated in detail using numerical methods and provide an insight to achieving optimal performance in terms of mass flux of entrained flow, pressure recovery, total pressure loss and power coefficient.
Journal ArticleDOI
CFD-aided mathematical modeling of thermal vapor compressors in multiple effects distillation units
TL;DR: In this paper, a mathematical investigation for the prediction of thermo-compressor performance in a multi-effect distillation unit (MED) is performed, where the real gas equation is used to calculate the properties of the working fluid.
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.