Results 21 to 30 of about 5,041 (207)

Upthrust Problems On Multistage Vertical Turbine Pumps [PDF]

open access: yes, 2005
Lecturepg. 46Vertical turbine pumps are designed to operate with the pump shafts in tension (downthrust). Most pump and motor manufacturers caution users to not operate the vertical turbine pumps at conditions that result in upthrust. upthrust ...
Smith, Donald R., Price, Stephen
core   +1 more source

Optimal parameters of elliptical groove gas film face seal with bidirectional rotational characteristics [PDF]

open access: yesInternational Journal of Fluid Engineering
The performance of gas film face seals is substantially affected by the geometric features of the texture on the seal face. To enhance the design of elliptical groove face seals for efficient bidirectional rotation, a comprehensive theoretical analysis ...
Yuansen Song   +3 more
doaj   +1 more source

Stress Characteristic Analysis of Pump-Turbine Head Cover Bolts during Load Rejection Based on Measurement and Simulation

open access: yesEnergies, 2022
It is not uncommon for pump-turbine units in pumped storage power plants to experience load rejections due to the sudden disconnection of the generator from the power grid.
Xingxing Huang   +7 more
doaj   +1 more source

Leakage flow simulation in a specific pump model [PDF]

open access: yes, 2014
This paper deals with the influence of leakage flow existing in SHF pump model on the analysis of internal flow behaviour inside the vane diffuser of the pump model performance using both experiments and calculations. PIV measurements have been performed
ROUSSETTE, Olivier   +6 more
core   +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

Measuring the Dynamic Characteristics of a Low Specific Speed Pump—Turbine Model

open access: yesEnergies, 2016
This paper presents results from an experiment performed to obtain the dynamic characteristics of a reversible pump-turbine model. The characteristics were measured in an open loop system where the turbine initially was run on low rotational speed before
Eve Cathrin Walseth   +2 more
doaj   +1 more source

High Vibration Problem Resolution in Centrifugal Pump through Design Change [PDF]

open access: yes, 2016
Case StudyCase Study 4: The case study is about single stage API BB2 pump. Pump operates at the temperature of 355 degree C (671 degree F), rated for pumping 442 m3/hr of Hydro-treated VGO (Vacuum Gas Oil) and is driven by a steam turbine.
Singh, Navneet   +2 more
core   +1 more source

Selective hydrometallurgical recovery of gold by using low-cost biomass waste: Kiwi peel

open access: yesAdsorption Science & Technology
Utilization of kiwi peel (KP) is proposed for gold recovery from electronic wastes (e-wastes). KP was simply modified by dehydration pretreatment with concentrated sulfuric acid.
Dan Yu, Xiaomei Guo, Yang Liu
doaj   +1 more source

Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation

open access: yesComplexity, 2020
Energy contributes significantly in almost all aspects of human life as well as economic activities and plays a crucial role in the infrastructural development of a county to alleviate poverty.
Du Jianguo   +4 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

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