Results 171 to 180 of about 207,661 (208)

Steam Ejectors for Vacuum Service

1978
High-pressure motive steam passes through the nozzle throat, expands, and leaves it at a high velocity (which entrains the gas or vapor in the suction chamber) and enters the diffuser. In the diffuser, the velocity head is converted to pressure. See Figure 15.1.
Frank Aerstin, Gary Street
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Evaluation of steam jet ejectors

Chemical Engineering and Processing: Process Intensification, 2002
Abstract Steam jet ejectors are an essential part in refrigeration and air conditioning, desalination, petroleum refining, petrochemical and chemical industries. The ejectors form an integral part of distillation columns, condensers and other heat exchange processes.
Hisham El-Dessouky, Hisham Ettouney, Imad Alatiqi, Ghada Al-Nuwaibit   +3 more
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The Fundamental Principles of the Steam Ejector

Proceedings of the Institution of Mechanical Engineers, 1941
The main purpose of this paper has been to express experimental results in a form which reveals the fundamental principles for application to the design of ejectors. Notwithstanding the large losses of work energy in the nozzle, combining cone, and diffuser, the diffuser was found to obey the same laws of discharge as in convergent nozzles, although ...
R. Royds, E. Johnson
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Steam Ejector System For car Conditioning

Transactions of the American Institute of Electrical Engineers, 1934
Steam ejector refrigeration for railroad passenger car air conditioning has been proved to be practicable. Equipment of this type which has been developed and thoroughly tested is described in this article.
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A COMPREHENSIVE VALIDATION OF CFD-BASED WET STEAM APPROACH FOR THE MODELLING OF STEAM EJECTORS

Proceeding of 8th Thermal and Fluids Engineering Conference (TFEC), 2023
Ejector-based system performance is closely related to the complex fluid-dynamic behavior inside ejectors, which is usually optimized through CFD simulations. The rapid expansion in ejector’s primary nozzle leads to the condensation of the working fluid, and since it strongly affects system performance, it has to be properly accounted.
Rafal Fingas, Dario Ghezzi, Riccardo Mereu, Giorgio Besagni   +3 more
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Analysis and Design of a Steam Ejector Structure

2009 International Conference on Energy and Environment Technology, 2009
By adjusting structures of the nozzle and mixing-chamber , effects of the structure on the steam ejector performance were analyzed. An improved CFD program which was proved suitable for simulating flow profile in a steam ejector formerly was used here.
Li Haijun, Li Sufen, Yang Guogang, Yue Danting   +3 more
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Modelling and simulation of steam jet ejectors

Desalination, 1999
Abstract The present study describes a computer simulation model for steam jet ejectors. The model was developed by application of the equations of continuity, momentum and energy to individual operation of nozzle, mixing chamber and diffuser. Two different approaches used to develop two models are presented.
Narmine H. Aly, Aly Karameldin, M.M. Shamloul   +2 more
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Numerical Simulation on the Performance of the Steam Ejector

2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, 2011
In this paper, Fluent 6.2 is employed to investigate the flow structure of the steam ejector used in the steam jet refrigeration system. Effect of the operating pressure on the entrainment ratio of the ejector is discussed. For a given ejector, there exists an optimum primary fluid pressure at which maximum entrainment ratio is obtained.
Yu Wenyan, Tian Rui, Yan Suying, Gao Hong   +3 more
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Numerical assessment of steam nucleation on thermodynamic performance of steam ejectors

Applied Thermal Engineering, 2013
Abstract Steam nucleation is a prevalent phenomenon in supersonic steam flows. It seems to occur to the high-speed flow in steam ejectors. The fundamental approach in evaluating the performance parameters of ejectors is to consider steam as an ideal gas. However, in a supersonic flow of vapor under specific circumstances, nucleation phenomenon occurs
Navid Sharifi, Masoud Boroomand, Majid Sharifi   +2 more
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The Energy-saving Analysis of Steam Ejector in plant Steam System

2010 Asia-Pacific Power and Energy Engineering Conference, 2010
This paper introduces the development trend of steam ejector and the impact of plant steam source's operating mode on the economical efficiency of units. On the basis of the working principle of steam ejector, high-pressure steam is used as a media to inhale and compress the low-pressure steam by the steam ejector, which turns the low-pressure steam ...
Yong Li, Ying-ying Wen
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