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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Physically based dynamic modeling of planar anode-supported sofc cogeneration systems
TL;DR: In this paper, the authors identify the required level of fidelity necessary for a dynamic SOFC system-level simulation tool and present the channel-level steady-state simulation and dynamic response to step changes in current density for a one-dimensional and quasi-two-dimensional model.
Journal ArticleDOI
Performance assessment of a novel combined heating mode integrated greenhouse and closed drying system with a dual-temperature steam jet heat pump
TL;DR: In this article , the authors proposed a novel combined heating mode (CHM) integrated with a dual-temperature steam jet heat pump (DTJP) system with greenhouse (GH) and closed drying system (CDS) used in agricultural drying.
Journal ArticleDOI
Effect of temperature and mole fraction on viscosity and thermal conductivity of water and ethanol mixture
TL;DR: In this article, a mixture of water and ethanol is used as the research object and the viscosity and thermal conductivity of gas and liquid are calculated by various methods, combined with the experimental data, the variation law with temperature and mole fraction is analyzed, and the difference of different calculation methods is compared.
Journal ArticleDOI
Exergetic performance evaluation of ejector cooling system
TL;DR: In this article, an ejector-cooling model was developed to calculate the entrainment ratio and the area ratio representing the throat to nozzle area of a generator and an evaporator.
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.