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In thermal power generation part the steam came from turbine condensed and again resend to steam conversionIn this part my doubt is why return steam need to be cooled?
The low pressure steam from the last stage of the steam turbine is condensed so that it can be pumped back to the steam raising units at high pressure, as water. You can't compress steam as it would condense in the compressor. The only way to use steam as a gas in a gas turbine would be if it was supercritical, but this would mean operating at temperatures well above the limits for most engineering materials, and steam at these conditions would be very corrosive. This type of reactor cycle using a gas turbine has been considered using helium as the working fluid, and it may be built as the "pebble bed" reactor, or it may not.
I think you need to understand more of thermodynamics. Read the Wikipedia entry for the "Rankine Cycle", see link below
What else can I help you with?
How does an extraction turbine work?
An extraction turbine is a type of steam turbine that operates by extracting a portion of the steam at intermediate pressure from the turbine for use in heating or other processes. As steam enters the turbine, it passes through various stages, converting thermal energy into mechanical energy to drive the turbine blades. The extracted steam is typically at a lower pressure and temperature, which makes it suitable for applications like district heating or process heating in industrial settings. The remaining steam continues through the turbine to generate additional power before being condensed and returned to the boiler system.
What is absolute expansion of steam turbine?
it's the thermal expansion in the casing of hp or ip turbine can be noticed by journal or thrust bearing when moving <<
Steam turbine and internal combustion gas engine for power generation?
Yes, they are both used for power generation
What is the effect or reheater in the gas turbine?
1.Turbine output is increased for same compressor work. 2.As more heat is supplied,thermal efficiency decreases.
Why the temperature and the pressure of gas are decreasing after flowing out from turbine?
The gas (working fluid) having flown through the turbine does some work on the turbine, converting its thermal energy into mechanical work produced by the turbine and coming out as an expanding gas with lower temperature and pressure.
Thermal barrier coating on gas turbine?
gas turbine's operate at very high temperatures. so a thermal barrier coating is necessary to protect the gas turbine components. TBC's have low thermal conductivity. they also protect against oxidation and hot corrosion.
Why you use cooling towers in thermal power station?
This is to cool the steam turbine condenser, where the steam outlet from the turbine's last stage is condensed before returning to the boiler feed pump inlets. The cooling towers circulate water that passes through tubes inside the condenser, separate from the steam/water in the boilers.
What is the function of condenser in thermal power plant?
In a thermal power plant, the condenser's primary function is to convert exhaust steam from the turbine back into water, allowing it to be reused in the boiler. This process helps maintain a vacuum that enhances turbine efficiency and maximizes electricity generation. Additionally, the condenser facilitates heat rejection to a cooling medium, typically water or air, ensuring the system operates within optimal thermal limits. Overall, it plays a critical role in the efficiency and sustainability of the power generation process.
How does radioactive materials in thermal generation work?
In thermal power generation using radioactive materials, the heat produced by the radioactive decay of the material is used to generate steam. The steam then drives a turbine connected to a generator, producing electricity. This process, known as nuclear fission, releases a large amount of energy from a small amount of fuel, making it an efficient power generation method.
How does an extraction turbine work?
An extraction turbine is a type of steam turbine that operates by extracting a portion of the steam at intermediate pressure from the turbine for use in heating or other processes. As steam enters the turbine, it passes through various stages, converting thermal energy into mechanical energy to drive the turbine blades. The extracted steam is typically at a lower pressure and temperature, which makes it suitable for applications like district heating or process heating in industrial settings. The remaining steam continues through the turbine to generate additional power before being condensed and returned to the boiler system.
What is the difference between combined cycle and cogeneration?
In Cogeneration Plant : The generated steam in boiler is used for both power generation & process heating, thereby reducing the condenstion losses compared to thermal power plant. In combined cycle first is gas turbine , rather than wasting the flue gas from gas turbine, we are sending it into boiler and again generating steam for running steam turbine. Both the ways we are increasing the thermal efficiency of the plant
What the pressure of steam on the turbine blade in any thermal plant?
Its not possible the same pressure in every thermal pp turbines very Pressure each capacity of turbine according to design.kachin panchal
How steam is used for power generation?
Steam is used for power generation primarily in steam turbines, where water is heated to create steam under high pressure. This steam is then directed to spin the blades of a turbine, converting thermal energy into mechanical energy. The turbine is connected to a generator, which converts this mechanical energy into electrical energy. This process is commonly used in fossil fuel, nuclear, and geothermal power plants.
How does coal work to make electricity?
Coal is burned to heat water and produce steam in a boiler. The steam then drives a turbine connected to a generator, which produces electricity. This process is known as thermal power generation.
How can you Discuss and compare between steam and gas turbine power cycles?
Steam and gas turbine power cycles are both used for electricity generation but operate on different thermodynamic principles. The steam turbine cycle typically involves heating water to create steam, which then drives the turbine, while the gas turbine cycle uses combustion gases to turn the turbine directly. Steam cycles generally have a higher thermal efficiency due to the ability to utilize heat recovery, but they require more water and infrastructure. In contrast, gas turbines are more compact, start up quickly, and are often used in peaking power plants, though they typically have lower thermal efficiency compared to advanced steam cycles.
What is absolute expansion of steam turbine?
it's the thermal expansion in the casing of hp or ip turbine can be noticed by journal or thrust bearing when moving <<
Steam turbine and internal combustion gas engine for power generation?
Yes, they are both used for power generation
