Steam turbine generator air inlet and outlet

How does steam inlet pressure affect turbine performance?

Turbine steam inlet pressure is a major parameter affecting turbine performance. To retain the design efficiency the steam inlet pressure should be maintained. Lowering steam inlet pressure reduces turbine efficiency and increases steam consumption.

What is the inlet temperature of a steam turbine?

The highest inlet steam temperature currently applied to actual supercritical pressure and USC steam turbines is between 566°C and 620°C. However, a next-generation A-USC pressure steam turbine project is aiming at 700°C-class inlet temperature application, as a national development project.

What are the operating parameters of a steam turbine?

The significant operating parameters of a steam turbine are the steam inlet temperature and pressure, and the exhaust back pressure or the vacuum drawn for condensing steam turbines. The variations in these parameters affect steam consumption and efficiency.

What are steam turbines using extraction and admission?

Steam turbines using extraction and admission are complex turbomachines with complicated control and operation that should simultaneously manage steam turbines (often variable load) with different steam flow controls based on other units and system requirements.

How do steam turbines work?

Modern steam turbines have an electronic governor that uses sensors to monitor the speed by examining the rotor teeth. To design a more efficient steam turbine, a casing with proper nozzles and vanes to confine the steam and valves to control the admission of steam to the nozzles should be used.

How to calculate the steam requirement of a turbine?

The steam requirement of a turbine can be estimated thanks to [Couper] : Depending on the power the Engineer wants to recover, the steam requirement in lb/h can be calculated. Example : ΔHs = H2 - H1 has been calculated and is equal to -172 BTU/lb Then m = -3412/ (0.35* (-172)) = 56.7 lb/kW.h