New formulae for efficiency scaling-up from model to prototype of a hydraulic turbine are presented based on the theoretical analysis that considers the only friction losses through the turbine. Two formulae are presented; one is the precise conversion formula, and the other the simplified ...
In this work, we theoretically analyzed the main factors affecting performance of multistage energy recovery hydraulic turbine (MERHT), and found that the arc radius (r) of the edge at the outlet section of the runner guide vane is the determining factor of the hydraulic efficiency of hydraulic...
The flow rate measurements are the most difficult part of efficiency tests on prototype hydraulic turbines. Among the numerous flow rate measurement methods, the Winter Kennedy method is preferred for measuring turbine flow rates, since it is convenient, practical and economical. This paper describes ...
The flow rate measurements are the most difficult part of efficiency tests on prototype hydraulic turbines. Among the numerous flow rate measurement methods, the Winter Kennedy method is preferred for measuring turbine flow rates, since it is convenient, practical and economical. This paper describes ...
Hard sediment particles, which are carried by rivers and reach the turbine, erode the surface in contact. This causes the change in runner profile with unevenly reduced mass, which causes loss in efficiency, vibrations and reduced life of turbine. Financial loss associated with this problem is ...
The special control control equipment driving this kind of power plant makes that it does at high efficiency possible.收藏 引用 批量引用 报错 分享 文库来源 求助全文 Hydraulic turbine turbine of hydroelectric power p 优质文献 相似文献Basic Modeling and Simulation Tool for Analysis of Hydraulic ...
So the hydraulic design of Pelton turbine was mainly based on the know-how. The homologous turbine model was the only way to verify its performance in the past. Although an efficiency scale-up equation for Pelton turbines had established in the IEC 60193 code, researches had shown different ...
The invention provides a method of operating an energy extraction device such as a wind turbine comprising a hydraulic pump driven by and applying torque to a rotating shaft, a hydraulic motor driving a load, a high pressure manifold in ... R William 被引量: 0发表: 2011年 Efficiency Analysi...
The tedious calculating, finding in table and deciding of parameters all will consume the valuable labor of engineers. This paper will discuss an intelligent large-scale hydraulic turbine type design system, which has raised the engineers' design efficiency.关键词: hydraulic turbine type design expert...
Above all, the hydraulic efficiency especially at part load and for low head is considerably improved. This improvement can be achieved for Pelton turbines as well. As an example, a power frequency control for a pump turbine is presented using adjustable speed....