Results 1 to 10 of about 13,848 (120)

Numerical Investigation of the Effect of Air Leaking into the Working Fluid on the Performance of a Steam Ejector

open access: yesApplied Sciences, 2021
This paper investigated the effect of air leaking into the working fluid on the performance of a steam ejector. A simulation of the mixing of air into the primary and secondary fluids was performed using CFD. The effects of air with a 0, 0.1, 0.3 and 0.5
He Li   +4 more
doaj   +1 more source

Investigation of the Motive Steam Pressure Effect on Performance and Reverse Flows in Sugar Factory Thermo-compressor: Validation and Numerical Study [PDF]

open access: yesJournal of Agricultural Machinery, 2022
IntroductionThermo-compressors or ejectors are used to enhance the vapor enthalpy in the process industry. The low costs of construction and maintenance, and simple structure, have increased by using this equipment in relevant fields of industry and ...
A Rezvanivand fanaei   +2 more
doaj   +1 more source

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   +1 more source

Discussion on Ball Screw Slide–Roll Ratio and Entrainment Velocity Calculation

open access: yesMachines, 2022
The slide–roll ratio and entrainment velocity are critical parameters in ball screw mechanism tribology investigations and are often determined by Chin-Chung Wei’s approach. Their findings indicated that substantial sliding always occurs between the ball
Weike Wang   +3 more
doaj   +1 more source

Numerical Simulation Study of a Swirling Drill Bit Used for Ice Core Drilling

open access: yesJournal of Marine Science and Engineering, 2022
Due to its high mechanical penetration rate and lack of pollution of the environment, air reverse circulation drilling is considered to be a promising method for ice drilling.
Mengke Wang   +4 more
doaj   +1 more source

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

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   +1 more source

Effects of Nozzle Exit Position on Condenser Outlet Split Ejector-Based R600a Household Refrigeration Cycle

open access: yesEnergies, 2020
The objective of this study is to investigate the performance characteristics of a small-sized R600a household refrigeration system that adopts a condenser outlet split (COS) ejector cycle under various operating and ejector geometry conditions.
Yongseok Jeon   +3 more
doaj   +1 more source

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

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   +1 more source

Design and Investigation of a Dynamic Auto-Adjusting Ejector for the MED-TVC Desalination System Driven by Solar Energy

open access: yesEntropy, 2022
Ejectors have been widely used in multi-effect distillation, thermal vapor compression (MED-TVC) desalination systems due to their simple structures and low energy consumption.
Jianbo Ren   +5 more
doaj   +1 more source

Numerical Characterization of the Flow Dynamics and COP Estimation of a Binary Fluid Ejector Ground Source Heat Pump Cooling System

open access: yesFluids, 2022
Ejector-based refrigeration systems can make direct use of many forms of thermal energy, such as solar thermal, waste heat, biogas, or natural gas. The present paper describes the estimation of the thermal coefficient of performance (COP) of a binary ...
Mouhammad El Hassan
doaj   +1 more source

Home - About - Disclaimer - Privacy