What does steam power mainly used to generate steam?
A steam power plant consists of a boiler, steam turbine and generator, and other auxiliaries. The boiler generates steam at high pressure and high temperature. The steam turbine converts the heat energy of steam into mechanical energy. The generator then converts the mechanical energy into electric power.
What kind of energy output is obtained from a steam power plant?
Steam power constitutes an important power source for industrial society. Water is heated to steam in power plants, and the pressurized steam drives turbines that produce electrical current. The thermal energy of steam is thus converted to mechanical energy, which in turn is converted into…
How does a steam power plant work?
Steam is produced in the boiler by utilising the heat of coal combustion. The steam is then expanded in the prime mover (i.e.., steam turbine) and is condensed in a condenser to be fed into the boiler again. The steam turbine drives the alternator which converts mechanical energy of the turbine into electrical energy.
What are the advantages and disadvantages of steam power plant?
Power Generation/Steam Power
| Advantages | Disadvantages |
|---|---|
| Cheap coal is used | Air pollution from smoke fumes |
| Can be installed anywhere near fuel & water supply | Costs more to run compared with other types of power stations |
| Requires less construction space | |
| Cost for Generation is less |
How do you increase steam turbine efficiency?
Three new methods of increasing efficiency of turbine power plants are described: reheating of steam turbine, regenerative feed heating of steam turbine, and by binary vapour cycle of steam turbine.
What is stage efficiency of steam turbine?
Gross or Stage Efficiency Of Steam Turbine:- Gross efficiency of steam turbine or stage efficiency of steam turbine is the ratio of the work done on the blades per kg of steam to the total energy supplied per stage per kg of steam.
What is the principle of steam turbine?
In simple terms, a steam turbine works by using a heat source (gas, coal, nuclear, solar) to heat water to extremely high temperatures until it is converted into steam. As that steam flows past a turbine’s spinning blades, the steam expands and cools.
Where is steam turbine used?
Steam turbines are found everywhere on the planet and are used to turn generators and make electricity or create propulsion for ships, airplanes, missiles. They convert heat energy in the form of vaporized water into motion using pressure on spinning blades.
How many types of steam turbines are there?
Three
Why vacuum is required in steam turbine?
Vacuum applies to steam turbines because the pressure of saturated vapour above available cooling water is well below 1 bar (typically 17 mbar at 15°C ambient).
What are the two types of turbine?
There are two main types of hydro turbines: impulse and reaction. The type of hydropower turbine selected for a project is based on the height of standing water—referred to as “head”—and the flow, or volume of water, at the site. Other deciding factors include how deep the turbine must be set, efficiency, and cost.
What is the difference between turbine and compressor?
The basic difference between both is that : 1 ) Turbine delivers work, while compressor requires work. Turbine extract energy by decreasing the pressure, while compressor increases fluid pressure.
Which turbine is used in low head plants?
propeller turbines
What is the head in low head plant?
Head is the vertical height measured between the hydro intake water level and the water level at the point of discharge. Using only a low head drop in a river or tidal flows to create electricity may provide a renewable energy source that will have a minimal impact on the environment.
Where low head is available is used?
Low Head. Low head dams are usually classified as systems with head differences of around 10 meters or less. These low head hydro turbines are generally used in facilities such as run-of-the-river systems where there is a flowing river with little elevation change.
Which turbine is used for high head in hydroelectric power plant?
Francis turbine
How do you classify large hydro power plant?
According to the extent of water flow regulation available the hydroelectric power plants may be classified into: (1) Run-off river power plants without pondage. ADVERTISEMENTS: (2) Run-off river power plants with pondage.
What type of hydro plant is it if the plant head is above 100m?
1. What type of Hydro plant is it if the Plant head is above 100m? Explanation: If the head of water available is above 100m, the plant is known as a high head plant.
What is the head of water available at turbine inlet in hydroelectric power plant called?
Net Head