Some varieties of gas turbine engines (e.g. RR Trent and RB211) have 3 concentric rotating shafts. Each shaft connects a compressor with a turbine. The low pressure compressor, or fan, is driven by the low pressure turbine. The high pressure compressor is driven by the high pressure turbine. Between the low and high pressure compressors there is an intermediate pressure compressor and, guess what... it's driven by the intermediate pressure turbine.
Resistance offered by turbine to the steam
A condensing turbine uses all the energy from the steam going from high pressure turbine to secondary turbine to condensing turbine then sends the condensate back for reheating. where a non condensing turbine just uses the high pressure aspect of the steam then returns the low pressure stream back to be reheated. Condensng turbines utilises the entire available drop from high pressure to the vacuum in the condenser; a back pressure turbine only utilises only the top part, whereas an exhaust steam turbine utilises only th bottom part of the pressure drop. Hope that helps.
when increase the turbine pressure it s add to the rapture disc and it s will be broken and reduce the pressure.
it is used balance axial thrust on turbine rotor due to admitting of high pressure steam in to turbine. it basic purpose is to save thrust bearing.
The main uses for packing steam in a turbine are to produce electricity and power. The steam creates pressure when in turn spins a turbine at very high rates of speed.
The ans is with respect to Thermal Power plants: the basic difference between a 500MW plant and 600MW palnt is in the turbine design. the 600MM turbine has 1 HPT, 1IPT and 2 LPTs, 2 Condensors and a generator. the 500MW turnbine has 1 HPT, 1IPT and 1 LPT, 1 condensor and a generator. HPT: high pressure turbine IPT: intermediate pressure turbine LPT: low pressure turbine
mix-pressure turbine
I can't answer for fossil (high pressure) cycles, but for the Nuclear Steam Supply Cycle (intermediate pressure) the efficiency is about 33%.
Resistance offered by turbine to the steam
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.
Draft tube is used to increase the pressure from the low turbine exit pressure to the pressure of the surrounding to which the fluid is rejected.Only reaction turbines require a draft tube as there is low pressure at the exit of the turbine,where as in an impulse turbine the pressure at the inlet and the exit is essentially the same, which is above the pressure to which the fluid is rejected and thus it require no draft tube.
Steam is redirected back into the boiler from the high-pressure turbine for reheating, but the steam from the low-pressure turbine enters into a condenser to become water again.
A condensing turbine uses all the energy from the steam going from high pressure turbine to secondary turbine to condensing turbine then sends the condensate back for reheating. where a non condensing turbine just uses the high pressure aspect of the steam then returns the low pressure stream back to be reheated. Condensng turbines utilises the entire available drop from high pressure to the vacuum in the condenser; a back pressure turbine only utilises only the top part, whereas an exhaust steam turbine utilises only th bottom part of the pressure drop. Hope that helps.
Essentially its the pressure prior to entering the turbine chamber via the MSV (main stop valve)
when increase the turbine pressure it s add to the rapture disc and it s will be broken and reduce the pressure.
To obtain as much mechanical energy from the steam produced in the plant's steam raising units as possible, it is expanded through increasing sized turbine wheels, eventually expanding into a vacuum in the turbine condenser before condensing and returning to the steam cycle.
a generator