Steam turbine rotors in thermal power plants are required to be strong enough to endure harsh high-temperature and high-pressure environments (600 ℃, 25 MPa) while rotating at a high speed. The recent increase in power-generation has involved the upsizing of turbine rotors, and higher precision products are required.

Which type of turbine is used in thermal power plant?

steam power plant: Power plant which uses the steam turbine as its only prime mover to generate electricity. GTCC power plant: Gas Turbine Combined Cycle power plant, in which a steam turbine is used in the bottoming cycle for power generation.

Which type of rotors are used in power generation stations?

Salient pole rotor

• Salient pole rotors have large diameter and shorter axial length.
• They are generally used in lower speed electrical machines, say 100 RPM to 1500 RPM.
• As the rotor speed is lower, more number of poles are required to attain the required frequency.

Which of the following is used in thermal power plant?

Traditional thermal power plants: also called combustion power plants, they operate with energy produced by a steam boiler fueled by coal, natural gas, heating oil, as well as by biomass. The steam activates a turbine which, in turn, drives an alternator to produce electricity.

Which type of rotor is used in hydro power plant?

Salient pole rotor is used by Hydro Generators.

Which type of rotor is used in thermal power plants

32 related questions found

Which type of alternators are used in hydro electric power plant?

In hydro-electric plants the type of alternator used is:

• Turbo generator.
• Non salient pole.
• Salient pole.
• Steam turbine generator.

What type of cooling system is used in the large power plants?

What type of cooling system is used in the large power plants? Explanation: In large power plants cooling towers are used in the place of cooling ponds. A cooling tower is a wooden or metallic rectangular structure, with packed baffling devices.

Which cycle is used in thermal power plant?

The Rankine cycle or Rankine Vapor Cycle is the process widely used by power plants such as coal-fired power plants or nuclear reactors. In this mechanism, a fuel is used to produce heat within a boiler, converting water into steam which then expands through a turbine producing useful work.

What are the main parts of thermal power plant?

The main parts of Thermal Power Plant:

• River or Canal.
• Circulating Water Pump.
• Condenser.
• Heater.
• Economizer.
• Boiler.
• Superheater.
• Turbine.

Which coal is used in thermal power plant in India?

Bituminous: It is a medium grade of coal having high heating capacity. It is the most commonly used type of coal for electricity generation in India. Most of bituminous coal is found in Jharkhand, Odisha, West Bengal, Chhattisgarh, and Madhya Pradesh.

What are the different types of rotors?

Let's review the four primary brake rotor types.

• Blank & Smooth. Blank and smooth rotors are the most common rotor type for passenger vehicles, like most standard sedans. ...
• Drilled. Drilled rotors have a series of holes drilled in spiraling patterns across the surface. ...
• Slotted. ...
• Drilled & Slotted.

What is cylindrical rotor?

Non-salient pole or Cylindrical rotors are cylindrical in shape having parallel slots on it to place rotor windings. It is made up of solid steel. Sometimes, they are also called as drum rotor. They are smaller in diameter but having longer axial length.

What is rotor OD?

Rotor Diameter means the diameter of the circle described by the moving rotor blades. ... Rotor Diameter means the cross sectional dimension of the circle swept by the rotating blades of a wind-powered energy generator.

What is Curtis turbine?

The Curtis turbine is a compound impulse turbine, the com- pounding being both for pressure and velocity. ... This is done by compounding the pressure drop, that is, by using several sets of nozzles, thereby reducing the drop in each set, and reducing the exit velocity of the steam accord- ingly.

Why condenser is used in thermal power plant?

In thermal power plants, the purpose of a surface condenser is to condense the exhaust steam from a steam turbine to obtain maximum efficiency, and also to convert the turbine exhaust steam into pure water (referred to as steam condensate) so that it may be reused in the steam generator or boiler as boiler feed water.

Where is turbine used?

Turbines are used in wind power, hydropower, in heat engines, and for propulsion. Turbines are extremely important because of the fact that nearly all electricity is produced by turning mechanical energy from a turbine into electrical energy via a generator.

What is the principle of thermal power plant?

A thermal power station works on the principle that heat is released by burning fuel which produces (working fluid) (steam) from water. The steam so produced runs the turbine coupled to generator which produces electrical energy.

What is cooling tower in thermal power plant?

A cooling tower is a heat rejection device that rejects waste heat to the atmosphere through the cooling of a coolant stream, usually a water stream to a lower temperature.

Which cycle is not used in thermal power plant?

We know that the Carnot cycle is most efficient cycle operating between two specified temperature limits. However; the Carnot cycle is not a suitable model for steam power cycle since: The turbine has to handle steam with low quality which will cause erosion and wear in turbine blades.

Why Generation is 11KV in the power stations?

It is cheaper to generate at a relative lower voltage and then step it up for transmission. Hence, most power generating plants are designed to operate at 11KV. ... Therefore in order to compensate for this, the primary generation voltage would be; the required nominal voltage + transmission losses.

What is the most common cycle used in thermal power generation?

The most common way is coupling a Brayton cycle with a Rankine cycle, as shown in Fig. 5.6. Both power cycles are coupled in such a way that the heat absorption occurs at high temperature in the gas turbine, and the heat transfer occurs at low temperature in the steam cycle.

How water is used in thermal powerplant?

Most of this water is used for cooling processes. These power plants boil water to generate steam which is then used to run the turbines used for generating electricity. As discussed earlier, there are three most basic types of cooling systems – once- through, wet recirculating and dry cooling.

What type of cooling is provided for generator in power plant?

Many power generators over 150 MW in capacity utilize hydrogen as a cooling method to transfer heat from the power generating winding enclosure to the heat exchanges known as H2 coolers. Hydrogen cooled power generators are more efficient and have less mass of materials of construction than their air-cooled cousins.

What is the function of cooling tower in thermal power plant Mcq?

What is the function of a cooling tower in a power plant? Explanation: The cooling water that is passed through the condenser, for condensing steam coming out of the turbine, gets heated and in order to cool that water down, cooling towers are used. So that the water can be reused again. 2.

What alternator is used in thermal station and what alternator is used in hydel plants?

2. ______ alternator is used in thermal stations and ______ alternator is used in hydel plants. Explanation: Due to salient poles, the machine will not run at very large speed and it becomes less rugged. Explanation: Synchronous compensator is a source for the reactive power.