Results 1 to 10 of about 795 (114)

Optimization of Two-Phase Ejector Mixing Chamber Length under Varied Liquid Volume Fraction [PDF]

open access: yesEntropy, 2022
The ejector performance varies with the mixing chamber length which is largely dependent on the fluid liquid volume fraction at the inlet. In this study, numerical simulations are conducted to optimize two mixing chamber lengths of a two-phase ejector ...
Jia Yan   +3 more
doaj   +2 more sources

Experimental Investigation of the Improvement Potential of a Heat Pump Equipped with a Two-Phase Ejector

open access: yesEnergies, 2023
In this paper, an experimental investigation of the performance improvement of a heat pump equipped with a two-phase ejector, called an “ejector–expansion heat pump (EEHP)”, is proposed. The system performance of the EEHP is compared with that of a vapor-
Wichean Singmai   +2 more
doaj   +3 more sources

Experimental investigation of a two-phase ejector installed into the refrigeration system for performance enhancement

open access: yesEnergy Reports, 2022
In this paper, the performance enhancement of the two-phase ejector installed into the refrigeration system called an ejector-expansion refrigeration system (EERS) is investigated experimentally.
Kittiwoot Sutthivirode   +1 more
doaj   +1 more source

A Simple Design Approach of Two-Phase Ejectors for CO2 Transcritical Heat Pumps [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
Integrating a two-phase ejector in mechanical vapor compression heat pumps is a practical and low-cost solution for improving performance and reducing energy consumption.
K. Ameur, Z. Aidoun
doaj   +1 more source

Preliminary Design of the Two-Phase Ejector under Constant Area Mixing Assumption for 5 kW Experimental System [PDF]

open access: yesE3S Web of Conferences, 2019
Ejector expansion refrigeration cycle is the modification of the vapour compression refrigeration cycle with the implementation of a two-phase ejector and a vapour-liquid separator to improve the cycle performance.
Atmaca Ayşe Uğurcan   +2 more
doaj   +1 more source

Numerical modeling and experimental research of a two-phase liquid- gas ejector with a profiled supersonic nozzle

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
A two-phase liquid-gas ejector with a supersonic nozzle is described in the article. The results of numerical modeling of the processes occurring in it and forming a two-phase jet are presented. The structure of a two-phase flow formed by the ejector and
I. A. Lepeshinsky   +2 more
doaj   +1 more source

Experimental and numerical investigation of two phase ejector performance with the water injected into the induced flow

open access: yesInternational Journal of Advanced Nuclear Reactor Design and Technology, 2020
When injectors are used in petroleum industries or sea water desalination system, it is a special case that the induced gas is accompanied by water, the ejector is in two-phase operation. In the present study, the ejector performance at two phase flow is
WeiXiong Chen   +5 more
doaj   +1 more source

An Object-Oriented R744 Two-Phase Ejector Reduced-Order Model for Dynamic Simulations

open access: yesEnergies, 2019
The object-oriented two-phase ejector hybrid reduced-order model (ROM) was developed for dynamic simulation of the R744 refrigeration system. OpenModelica software was used to evaluate the system’s performance. Moreover, the hybrid ROM results were
Michal Haida   +6 more
doaj   +1 more source

Experimental study on the oblique shock waves and expansion waves in the supersonic carbon dioxide two-phase flow

open access: yesMechanical Engineering Journal, 2016
Recently, with the appearance of the two-phase flow ejector in refrigeration air conditioning and heat pump systems, the efficiency of the cycle has largely been improved in comparison with that of conventional cooling and heating systems.
Yosuke KAWAMURA, Masafumi NAKAGAWA
doaj   +1 more source

Experimental Investigation of the Performance and Spray Characteristics of a Supersonic Two-Phase Flow Ejector with Different Structures

open access: yesEnergies, 2020
A two-phase flow ejector is an important part of a water mist fire suppression system, and these devices have become a popular research topic in recent years. This paper proposes a supersonic ejector that aims to improve the efficiency of water mist fire
Shizhen Li   +4 more
doaj   +1 more source

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