Results 31 to 40 of about 5,415 (258)

CFD Modelling of Pump as Turbine with Various Number of Blade for Microhydro System

open access: yesJournal of Applied Science & Process Engineering, 2016
Pump as Turbine is an electromechanically component that is largely used in microhydro system. The main advantages of pump as turbine compared to commercially available turbines are lower cost, easier to maintain and readily available. These key features
Mohd Azlan Ismail Ismail   +3 more
doaj   +1 more source

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

open access: yesComplexity, 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   +5 more
doaj   +1 more source

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

open access: yesFrontiers 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   +3 more
doaj   +1 more source

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

open access: yesEnergies, 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   +10 more
doaj   +1 more source

Development Of An Advanced Gas Turbine Driven High-Speed Centrifugal Pump For Injection Services

open access: yes, 1986
Lecturepg. 77The high-speed centrifugal pump dealt with herein has been designed principally for applications in high-pressure injection for enhanced oil recovery.
Ross, Robert T., Benvenuti, Erio
core   +1 more source

An integrated study for solving high vibration problem of a deep well turbine pump

open access: yes, 2023
Mechanical vibrations are a common problem encountered in many machines, especially for vertical turbine pumps. These pumps are generally difficult to stiffen or damp, but the effective diagnosis must begin with an understanding of the underlying ...
El-Gazzar, Dalia M., Dalia M. El- Gazzar
core   +1 more source

An Improved Autoencoder and Partial Least Squares Regression-Based Extreme Learning Machine Model for Pump Turbine Characteristics

open access: yesApplied Sciences, 2019
Complete characteristic curves of a pump turbine are fundamental for improving the modeling accuracy of the pump turbine in a pump turbine governing system.
Chu Zhang   +4 more
doaj   +1 more source

Flow-Induced Vibration of Non-Rotating Structures of a High-Head Pump-Turbine during Start-Up in Turbine Mode

open access: yesEnergies, 2022
Pumped storage-power plants play an extremely important role in the modern smart grid due to their irreplaceable advantages in load peak-valley regulation, frequency modulation, and phase modulation.
Mengqi Yang   +6 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Simultaneous efficiency improvement of pump and turbine modes for a counter-rotating type pump-turbine

open access: yesAdvances in Mechanical Engineering, 2016
This article presents a multi-objective optimization to improve the hydrodynamic performance of a counter-rotating type pump-turbine operated in pump and turbine modes.
Jin-Woo Kim   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy