Results 21 to 30 of about 8,043 (204)

Designing Hydrogen Recirculation Ejectors for Proton Exchange Membrane Fuel Cell Systems

open access: yesEnergies, 2023
The proton exchange membrane fuel cell (PEMFC) is a promising device in the fields of power generation, energy storage, aerospace, and public transportation.
Jianmei Feng   +3 more
doaj   +1 more source

Ejector Performance of a Pump-less Ejector Refrigeration System Driven by Solar Thermal Energy [PDF]

open access: yes, 2012
Ejector refrigeration is considered as one of the three main ways of refrigeration and air-conditioning to utilize lowgrade energy. Use of pump-less technology to eliminate the mechanical circulating pump of the working fluid from condenser to generator ...
Huang, Yunzhou   +4 more
core   +1 more source

Performance Analysis on a Power and Ejector-Refrigeration System and the Involved Ejector

open access: yesFrontiers in Energy Research, 2019
In order to make better use of the thermal energy at low and medium temperature and improve the organic Rankine cycle performance, the power, and ejector-refrigeration system has been put forward and a lot of research has been carried out.
Xiaolin Zhang   +5 more
doaj   +1 more source

Proton Exchange Membrane Fuel Cell Ejector Test Platform Design and Ejector Test Analysis

open access: yesWorld Electric Vehicle Journal, 2021
The hydrogen recirculation system is essential to the performance of the fuel cell system; the ejector device plays an important role in the hydrogen recirculation system.
Fengxiang Chen   +4 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 Of An Ejector Refrigeration System [PDF]

open access: yes, 2012
The aim of the present work is to experimentally study the possibility of improving the energy efficiency of a vapour compression refrigeration system where a two-phase ejector replaces the expansion valve.
Reddick, Christopher   +2 more
core   +1 more source

Numerical Investigation on the Effect of Section Width on the Performance of Air Ejector with Rectangular Section

open access: yesEntropy, 2023
Due to its simple structure and lack of moving parts, the supersonic air ejector has been widely applied in the fields of machinery, aerospace, and energy-saving. The performance of the ejector is influenced by the flow channel structure and the velocity
Ying Zhang   +5 more
doaj   +1 more source

Experimental and Analytical Investigation of Automotive Ejector Air-Conditioning Cycles Using Low-Pressure Refrigerants [PDF]

open access: yes, 2012
In recent years, ejectors have received much attention because of their ability to reduce throttling losses and increase the efficiency of stationary and mobile air-conditioning systems.
Lawrence, Neal, Elbel, Stefan
core   +1 more source

Study on Ejector - Vapor Compression Hybrid Air Conditioning System Using Solar Energy [PDF]

open access: yes, 2012
The ejector cycle has been recognized as a promising cycle for the utilization of solar energy for cooling. However, the conventional ejector cycle suffers from low efficiency owing to a low evaporation temperature.
Dang, Chaobin   +2 more
core   +1 more source

Experimental Determination of an Optimal Performance Map of a Steam Ejector Refrigeration System

open access: yesEnergies, 2022
An experimental determination of optimal performance of a steam ejector refrigerator was proposed which aims to indicate the optimal performance under various heat source temperatures.
Kittiwoot Sutthivirode   +1 more
doaj   +1 more source

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