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 ...
The measured turbine efficiency curve is then compared with the curve provided by the manufacturer. The CFD calculations including the spiral case are then used to analyze the influence with the coefficient and index in the Winter Kennedy flow rate formula on the flow rate measurement. The ...
The measured turbine efficiency curve is then compared with the curve provided by the manufacturer. The CFD calculations including the spiral case are then used to analyze the influence with the coefficient K and index n in the Winter Kennedy flow rate formula on the flow rate measurement. The ...
The minimum level would be governed by operating requirements and by the economic balance between the value of the developed head at the site and at the downstream places.The relation between draw down and minimum head should be such that a reasonable turbine efficiency will be maintained through...
The turbine part of the turbo captures exhaust energy of the engine which would otherwise be wasted as heat and sound, and stores it as electrical energy. When extra power is required, the motor- generator powers the compressor to allow an increased mass of fuel/air mixture to be supplied ...
A hydraulic fluid comprises from 10 to 99% by weight of an ester or mixture of esters, having the general formula: ##EQU1## and/or WHEREIN R is a straight or branched chain alkylene group containing at least 2 carbon atoms, each R 1 is the same or different and is an alkyl radical...
Although the rotor of a wind turbine rotates at very low speeds (1) it can be turned into a FW with noteworthy energy storage capacity, due to the tremendous dimensions of modern wind turbine rotors (3) [24]. The paper at hand proposes a hydraulic variable inertia FW, whose design [25...
the flow rate does not quickly decrease to 0. This is because the working principle of the turbine flow sensor relies on the fluid to drive the turbine to rotate, thereby generating a signal to measure the flow rate. When the cylinder suddenly stops, the fluid in the pipeline will maintain...
Since there are a variety of electric actuators, electro-hydraulic control valves show better driving characteristics and various forms for different applicants with a lower cost and a greater efficiency. The flow rate, pressure, forces, or other system variables can be controlled with different close...
The above and other objects of the present invention can be accomplished by a steplessly variable power transmission comprising a torque converter provided with a pump device having an input member connected with an engine output member of an engine and a turbine device having an output member. ...