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Optimum Efficiency of a Steam Ejector for Fire Suppression Based on the Variable Mixing Section Diameter [PDF]

open access: yesEntropy, 2022
The steam ejector is valuable and efficient in the fire suppression field due to its strong fluid-carrying capacity and mixing ability. It utilizes pressurized steam droplets generated at the exit to extinguish the fire quickly and the steam droplet ...
Yu Han   +4 more
doaj   +2 more sources

Numerical Analysis of Steam Ejector Performance with Non-Equilibrium Condensation for Refrigeration Applications

open access: yesBuildings, 2023
In recent years, there has been great interest in developing cooling systems with humidity- and temperature-independent control capabilities that can operate efficiently at varying temperatures.
Yu Lei   +5 more
doaj   +2 more sources

Effect of Superheat Steam on Ejector in Distilled Water Preparation System for Medical Injection [PDF]

open access: yesEntropy, 2022
In this study, a wet steam model was used to investigate the effect of steam superheat on ejector performance and non-equilibrium condensation phenomena. The simulation data for the ejector were validated with experimental data. The simulations show that
Bin Yang   +5 more
doaj   +2 more sources

Investigation of Fluid Characteristic and Performance of an Ejector by a Wet Steam Model [PDF]

open access: yesEntropy, 2022
In this paper, a wet steam model is utilized to study the fluid characteristic and performance of a supersonic ejector. The condensation process, which has been ignored by most researchers, is analyzed in detail.
Chen Wang, Lei Wang
doaj   +2 more sources

Turbulence Model Comparative Study for Complex Phenomena in Supersonic Steam Ejectors with Double Choking Mode [PDF]

open access: yesEntropy, 2022
Scholars usually ignore the non-equilibrium condensing effects in turbulence-model comparative studies on supersonic steam ejectors. In this study, a non-equilibrium condensation model considering real physical properties was coupled respectively with ...
Yiqiao Li   +4 more
doaj   +2 more sources

Performance Evaluation of a Steam Ejector Considering Non-Equilibrium Condensation in Supersonic Flows

open access: yesEnergies, 2023
The present study established an experimental system of steam ejector refrigeration to evaluate the effect of the operating parameters, such as pressure on the diffuser wall and primary and secondary fluid, on the performance and efficiency of the ...
Youhao Xie   +4 more
doaj   +2 more sources

Numerical Investigation of Transonic Flow-Induced Spontaneous Condensation in Micro-Ejector Nozzles [PDF]

open access: yesMicromachines, 2023
Micro-cooling systems are compact refrigeration systems widely applicable in microchemical analysis, biomedicine, and microelectromechanical systems (MEMS).
Yu Han   +4 more
doaj   +2 more sources

Experience in multistage steam-driven ejectors [PDF]

open access: yesE3S Web of Conferences, 2020
The article presents some trends of multistage steam-driven ejectors improvement and examples of its implementation. Three relevant directions were picked out: increasing of reliability, profitability and efficiency. Regarding the reliability increasing,
Murmanskii Ilia   +5 more
doaj   +3 more sources

Performance analysis and optimization of a steam ejector through streamlining of the primary nozzle

open access: yesCase Studies in Thermal Engineering, 2021
A steam ejector uses high-pressure vapor as the power for operating in steam cycles. The ejector geometry and pressure of the motive flow significantly influence its performance.
Wenxu Sun   +4 more
doaj   +2 more sources

Analysis of Supersonic Flows inside a Steam Ejector with Liquid–Vapor Phase Change Using CFD Simulations

open access: yesThermo
In this work, different CFD models to compute flows inside a steam ejector were investigated. The results were compared to the analytical models as well as the experimental results from the literature.
Hugues Charton   +2 more
doaj   +2 more sources

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