Results 61 to 70 of about 70,148 (323)
EnergiesIn order to study the influence of split blades on the turbine force characteristics and fluid–structure coupling characteristics of pumps, this paper selected the IS 80-50-315 centrifugal pump, used as a reverse-acting hydraulic turbine, as the research
Fengxia Shi +5 more
doaj +1 more source
Hydraulic Optimization of Two-Way Counter-rotating Axial Flow Pump Turbine
Frontiers in Energy Research, 2020 The two-way counter-rotation technology is mainly applied to the tidal power station. In this paper, the hydrodynamic optimization of the two-way counter-rotating axial-flow pump turbine is carried out.
Wang Xiuli +6 more
doaj +1 more source
Gas turbine engine fuel control [PDF]
, 1973 A variable orifice system is described that is responsive to compressor inlet pressure and temperature, compressor discharge pressure and rotational speed of a gas-turbine engine.
Gold, H. S.
core +1 more source
Research on energy conversion characteristic of pump as turbine [PDF]
Advances in Mechanical Engineering, 2018 Pump as turbine is a device for energy conversion. To master the characteristics of energy transformation, especially within impeller, plays important roles for further optimum design of pump as turbine. In order to analyze the energy-changing features in detail using computational fluid dynamics, the impeller is divided into six regions by the radius.
Senchun Miao +4 more
openaire +2 more sources
Experimental Investigation of Microbubble Evolution in the Liquivac Multiphase Flow Pump
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT This paper aims to experimentally investigate the mechanisms of microbubble characteristics evolution within an axial pump. The findings will aid in assessing the pump performance by identifying the range of bubble sizes and comparing them with the threshold size (< 300 μm). This study also provides evidence supporting the use of such pumps as
Hamad FA +4 more
wiley +1 more source
Calibration of flow differential pressure coefficients on pump-turbine by thermodynamic method
Energy InformaticsOn-line monitoring of flow rate is rather important to evaluate the water consumption of the pump-turbine and the overall efficiency of the pumped storage station.
Wenkui Zhang +4 more
doaj +1 more source
Comparison of Different Approaches to Predict the Performance of Pumps As Turbines (PATs)
Energies, 2018 This paper deals with the comparison of different methods which can be used for the prediction of the performance curves of pumps as turbines (PATs). The considered approaches are four, i.e., one physics-based simulation model (“white box&rdquo ...
Mauro Venturini +3 more
doaj +1 more source
A new design method for the vortex hydrogen circulating pump system
AIP Advances, 2023 Against the backdrop of “carbon peak and carbon neutrality,” the hydrogen and fuel cell vehicle industry are rapidly developing. Within the on-board hydrogen supply system, the hydrogen circulation pump serves as an essential component of the hydrogen ...
Ji-Qiang Li +2 more
doaj +1 more source
Supercharged topping rocket propellant feed system [PDF]
, 1979 A rocket propellant feed system utilizing a bleed turbopump to supercharge a topping turbopump is presented. The bleed turbopump is of a low pressure type to meet the cavitation requirements imposed by the propellant storage tanks.
Ginsburg, A. +2 more
core +1 more source
Thermodynamic analysis of a novel fossil-fuel–free energy storage system with a trans-critical carbon dioxide cycle and heat pump [PDF]
, 2020 This paper presents and analyzes a novel fossil-fuel–free trans-critical energy storage system that uses CO2 as the working fluid in a closed loop shuttled between two saline aquifers or caverns at different depths: one a low-pressure reservoir and the ...
Hao, Y +4 more
core +1 more source