Results 31 to 40 of about 70,148 (323)

Steady state simulation and exergy analysis of supercritical coal-fired power plant with CO₂ capture [PDF]

, 2015
Integrating a power plant with CO₂ capture incurs serious efficiency and energy penalty due to use of energy for solvent regeneration in the capture process.
Kelsall, Greg, Olaleye, Akeem K., Wang, Meihong   +2 more
core   +1 more source

Numerical Analysis on the Hydraulic Thrust and Dynamic Response Characteristics of a Turbine Pump

Energies, 2022
Pumps as turbines are widely used in the world, wherein the hydraulic thrust of a turbine pump is one of the key factors affecting the safe and stable operation of a unit.
Linghua Kong, Jingwei Cao, Xiangyang Li, Xulei Zhou, Haihong Hu, Tao Wang, Shuxin Gui, Wenfa Lai, Zhongfeng Zhu, Zhengwei Wang, Yan Liu   +10 more
doaj   +1 more source

Transient Flow-Induced Stress Investigation on a Prototype Reversible Pump–Turbine Runner

Energies
Pump–turbine units with high heads are subjected to strong pressure pulsations from the unsteady transient flow in fluid channels, which can produce severe vibrations and high stresses on the pump–turbine structural components.
Dehao Zhang, Qiang Quan, Xingxing Huang, Zhengwei Wang, Biao Wang, Yunfeng Xiao   +5 more
doaj   +1 more source

Reverse engineering of impellers to reduce pipe network pressure and enable sustainable power generation using pumps as turbines (PATs)

Results in Engineering
A pump working as a turbine is a hydraulic machine type that can operate as both a pump and a turbine (PAT) by reversing the flow direction. The PAT could be an effective method for meeting global energy demands, particularly in rural and isolated areas.
Ali Abdulshaheed, Faizal Mustapha, Shahrul Sham Dol, Kamarul Ariffin Ahmad, Mazli Mustapha, Mohd Anuar   +5 more
doaj   +1 more source

Numerical Simulation and Computational Flow Characterization Analyses of Centrifugal Pump Operating as Turbine

Complexity, 2021
Using a pump in reverse mode as a hydraulic turbine remains an alternative for hydropower generation in meeting energy needs, especially for the provision of electricity to remote and rural settlements.
Du Jianguo, Guanghui Chang, Daniel Adu, Ransford Darko, Muhammad A. S. Khan, Eric O. Antwi   +5 more
doaj   +1 more source

Research on the Influence of Tip Clearance of Axial-Flow Pump on Energy Characteristics under Pump and Turbine Conditions

Machines, 2022
In order to study the influence of tip clearance on the performance and energy dissipation of the axial-flow pump and the axial-flow pump as a turbine, and find the location of high dissipation rate, this study took an axial-flow pump model as its ...
Yanjun Li, Qixu Lin, Fan Meng, Yunhao Zheng, Xiaotian Xu   +4 more
doaj   +1 more source

Numerical investigation of unsteady pressure pulsation characteristics in an ultra-low specific-speed centrifugal pump as a turbine

Frontiers in Energy Research, 2023
The unsteady flow characteristics of pump as hydraulic turbine play a vital role in its safe and stable operation, while the ultra-low specific-speed centrifugal pump may face more stability problems due to the limitations of its flow conditions under ...
Yangyang Wei, Yuhui Shi, Qing Zhang, Weidong Shi   +3 more
doaj   +1 more source

Design of Pump as Turbine Experimental Test Facility [PDF]

MATEC Web of Conferences, 2017
This paper presents the design process of experimental test facility for pump as turbine hydropower system. Three design possibilities that related to the PAT condition of operation was developed and analyzed by using CFD Software. It is found that the First Variant with a straight flow to the PAT will produce higher velocity, which is needed to ...
Zariatin D. L., Rhakasywi Damora, Ade Fahzul, Setyo Abdi   +3 more
openaire   +2 more sources

Experimental tests of the operating conditions of a micro gas turbine device [PDF]

, 2015
The aim of this work is to analyze the performance of a commercial micro gas turbine, focusing on the analysis of the fuel consumption and the outlet compressor and turbine temperature at various rpm, and to evaluate and compare the efficiency of the ...
CAPATA, Roberto
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source