Results 201 to 210 of about 301,138 (269)

Numerical Investigation of the nozzle expansion state and its effect on the performance of the steam ejector based on ideal gas model

Applied Thermal Engineering, 2021
Many research works have generally divided the back pressure range of steam ejectors into critical, subcritical and malfunction modes based on the change of the entrainment ratio.
Xiaodong Wang, He Li, Jiuxin Ning, Pengfei Zhang, H. Hu, J. Tu   +5 more
semanticscholar   +1 more source

CFD Simulation of the Supersonic Steam Ejector

ASME 2010 4th International Conference on Energy Sustainability, Volume 1, 2010
The supersonic steam ejector is widely used in many industries which are steam powered such as oil, thermoelectric, refrigeration and so on. Many scholars analyzed the steam ejector by using ideal gas model and they ignored phase change, this may bring some errors for the flowing field of the ejector.
Zhiming Li, Jinli Wang, Hongtao Zheng, null Cailin, Yajun Li   +4 more
openaire   +1 more source

Numerical investigation of spindle position effects on steam ejector performance with a nonequilibrium condensation model

Asia-Pacific Journal of Chemical Engineering
This research studied the performance of a spindle‐controlled steam ejector using models such as ideal gas and wet steam under various operating conditions based on computational fluid dynamics (CFD).
Fareeha Ahmed, Weixiong Chen
semanticscholar   +1 more source

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
openaire   +1 more source

Characteristics of static pre-cyclonic steam ejector

International Journal of Thermal Sciences, 2017
Abstract The thermal vapor recompression (TVR) technology can partially recover condensation latent heat of the secondary steam in the multi-effect evaporation (MEE) process. And the two-dimension of x and r momentum exchange in the key device-steam ejector, makes induction efficiency relatively low and mixing length long.
Shengyang Tao, Yuqiang Dai, Jiupeng Zou, Ding Zhao   +3 more
openaire   +1 more source

Estimation of ejector's main cross sections in steam-ejector refrigeration system

Applied Thermal Engineering, 2004
Abstract This paper describes the calculation of main cross sections of a steam-ejector, operating in a refrigeration system. For the detailed calculation of ejector a method has been developed which employs functions describing the thermodynamic properties of steam.
openaire   +1 more source

Parametric study of low‐temperature solar‐assisted flash evaporation desalination systems using two‐phase water–steam ejector

Heat Transfer
This study aims to investigate a two‐phase subsonic ejector added to a flash evaporation desalination system to increase the system productivity of distilled water. The flash evaporation was of low‐temperature condition that it could be powered by a flat
Mustafa S. Mahdi, A. W. Ezzat, Eric Hu
semanticscholar   +1 more source

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
openaire   +1 more source

4E analysis and multi-objective optimization of a micro poly-generation system based on SOFC/MGT/MED and organic steam ejector refrigerator

Energy, 2020
This paper presents 4E (energy, exergy, economic and environmental) analysis and multi-objective optimization of a micro poly-generation system to produce power, cooling, heating and freshwater, which consists of solid oxide fuel cell (SOFC), micro gas ...
Huailiang You, Jitian Han, Yang Liu, Changnian Chen, Ge Yi   +4 more
semanticscholar   +1 more source

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
openaire   +1 more source