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Why the vane of pelton turbine is made in double hemispherical shape?
Wiki User
∙ 14y ago
oterwise the returning water stream can abstract the incoming water jet and hence reduces its efficiency
Wiki User
∙ 14y ago
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Applications and uses of pelton wheel turbine?
Pelton wheel could be used to lift water from a lower source (lake or something) to pour into a high place. Another use, it could be used to dig into the earth, the wheel have the shape of a milling cutter, it can open channels in the ground or something. It could also be used to measure the speed of a fluid, if connected to a dynamo meter, the speed of flow could be read via voltage. These are some applications. BY: FAISAL RAFIQUE
The Mach number at inlet of a gas turbine diffuser is 0.3 The shape of thediffuser would be?
converging
What is the DNA twisted structure called?
AnswerThe "twisted ladder" shape of DNA is called a double helix.
How do you create triangle circle and rectangle classes derived from a base class shape with virtual area function in c plus plus?
#include<iostream> struct shape { virtual double area () const = 0; }; struct triangle : shape { triangle (double b, double h): base (b), height (h) {} double base, height; double area () const override { return base * height / 2; } }; struct circle : shape { circle (double r): radius (r) {} double radius; double area () const override { return 4 * atan(1) * radius * radius; } }; struct rectangle : shape { rectangle (double w, double h): width (w), height (h) {} double width, height; double area () const override { return width * height; } }; int main() { triangle t (10, 5); std::cout << "triangle with base " << t.base << " and height " << t.height << " has area " << t.area() << std::endl; circle c (5); std::cout << "circle with radius " << c.radius << " has area " << c.area() << std::endl; rectangle r (10, 5); std::cout << "rectangle with width " << r.width << " and height " << r.height << " has area " << r.area() << std::endl; }
What is the effect of silica on steam turbine blades?
Although several factors influence the formation of deposits on turbine components, the general effect is the same no matter what the cause. Adherent deposits form in the steam passage, distorting the original shape of turbine nozzles and blades. These deposits, often rough or uneven at the surface, increase resistance to the flow of steam. Distortion of steam passages alters steam velocities and pressure drops, reducing the capacity and efficiency of the turbine. Where conditions are severe, deposits can cause excessive rotor thrust. Uneven deposition can unbalance the turbine rotor, causing vibration problems.The nature of silica deposits found on turbine blades varies greatly. lists a number of silica compounds that have been identified in various studies of turbine blade deposition. Of these, amorphous silica (SiO2) is the most prevalent.Localized Silica Saturation. Turbine deposits are also formed where localized silica saturation occurs and silica condenses from the steam in those areas of the turbine. Partial evaporation of the precipitated silica can then occur with only a portion of the silica being dissolved by the continuous steam flow. Deposits remain as a result.Turbine Velocity. Another factor affecting the location of turbine deposits is the velocity in the turbine. Steam flows from the inlet to the outlet of the turbine in only a fraction of a second. Consequently, deposition is shifted downstream from the saturation point by the high steam velocities.Prevention of Silica DepositsThe most significant factor in minimizing turbine silica deposits is the maintenance of low silica concentrations in the boiler water. External treatment equipment must be operated carefully to limit the amount of silica entering with the makeup water, and the condensate must be monitored to minimize contamination. After silica enters the boiler water, the usual corrective action is to increase boiler blowdown (to decrease the boiler water silica to acceptable levels) and then to correct the condition that caused the silica contamination.
What is a hemispherical bowl?
A bowl of half sphere shape.
What shape should the turbine blades be?
what ever shape you want them to be.
What shape should turbine blades be?
what ever shape you want them to be.
Applications and uses of pelton wheel turbine?
Pelton wheel could be used to lift water from a lower source (lake or something) to pour into a high place. Another use, it could be used to dig into the earth, the wheel have the shape of a milling cutter, it can open channels in the ground or something. It could also be used to measure the speed of a fluid, if connected to a dynamo meter, the speed of flow could be read via voltage. These are some applications. BY: FAISAL RAFIQUE
Hemi Engine?
The term "hemi engine" refers to an engine with a hemispherical combustion chamber. The word "hemi" is short for hemispherical, and it describes the shape of the combustion chamber in the cylinder head of the engine. This design is known for its efficiency in allowing air and fuel to flow in and out of the chamber, leading to improved combustion.
What cooked pasta looks the most like a human brain when pressed into a hemispherical shape?
In order to have thick enough gyri, you would probably have to use rolled manicotti.
Why do they call some dodge engines a hemi?
"Hemi" is short for hemispherical, which refers to the shape of the combustion chamber. Instead of flat or wedge shaped they're round at the top.
What does hemi stands for?
Hemi is short for hemispherical. It refers to the heads on an engine that are basicaly domed in shape. It is supposed to provide more compression area allowing more fuel mixture to be ignited at a time thus increasing horsepower. I'm fairly certain I'm remembering the definition correctly.
The Mach number at inlet of a gas turbine diffuser is 0.3 The shape of thediffuser would be?
converging
What is the double shape of DNA called?
double helix
DNA can be described as a double shape?
double helix.
What molecule has the shape of a double strand helix?
DNA, and the shape is also known as a double helix.
