The majority of the electricity generated in the United States is produced by steamdriven turbine-generators. A very important step in this power generation process is the condensation of exhaust steam from the final, low-pressure turbine. When the steam condenses, the rapid decrease in vapor-to-liquid specific volumes creates a vacuum at the turbine outlet (monitored as turbine backpressure) t...

In power station practice, work is extracted from expanding steam in three stages namely High Pressure(HP), Intermediate Pressure(IP) and Low Pressure(LP) turbines. During the expansion process in the LP turbine, the steam cools down and at some stages, it nucleates to become a two-phase mixture. It is well-acknowledged in the literature that the nucleating and wet stages in steam turbines are ...

an industrial gas turbine has the characteristic of decreasing output power on hot summer days while electricity demand peaks. steam injection in gas turbines has been used for many years to prevent the loss of performance of gas turbines caused by high ambient temperature. vodoley system is a closed steam injection gas turbine cycle (csigtc), which is known as a self-sufficient in steam produc...

This paper introduces a concept applied for a new PLM-supported process in steam turbine service business. The concept has been developed and instantiated in an industrial case: The paper starts with an analysis of engineering processes and the IT landscape in a globally acting company offering MRO (Maintenance, Repair and Overhaul) services for steam turbines. Illustrations show how digital pr...

Stress Concentration Factors are significant in machine design as it gives rise to localized stress when any change in the design of surface or abrupt change in the cross section occurs. Almost all machine components and structural members contain some form of geometrical or microstructural discontinuities. These discontinuities are very dangerous and lead to failure. So, it is very much essent...

The gas-steam turbine combined cycle (GTCC) is the preferred power plant type because of its high efficiency and its use of cheap and clean natural gas as fuel. It is also the preferred type in the Arab Gulf countries where it is used as cogeneration power-desalting plant (CPDP). In this chapter, descriptions and analysis of the GTCC components are presented, namely, the gas turbine cycle (comp...

PT. Kurnia Batang Hari is a palm oil processing factory into oil. At PT KBHB there tool called “Steam Turbine Generator Type RB5” which functions as power generator. This study aims to determine the effect of load on mass flow rate, turbine generator power, and efficiency steam The research method take boiler data directly for 1 week. Get enthalpy value from table can calculate based objective....

A fifth-order turbine-governor and a third-order oil-firing boiler model for a steam power plant are developed and combined into a complete plant model. A classical PID controller and an Optimal Integral Controller are applied to the plant model, and the results are compared for two different load levels and different kinds of disturbances. Special attention is given to the turbine throttle pre...

To achieve higher efficiency target of the advanced turbine systems, the closed-loop steam cooling scheme is employed to cool the airfoil. It is proven from the experimental results at laboratory working conditions that injecting mist into steam can significantly augment the heat transfer in the turbine blades with several fundamental studies. The mist cooling technique has to be tested at gas ...

In this work, two different approaches – an iterative thermodynamic method and a neural network model – are proposed and compared for the modeling of steam turbines. The iterative thermodynamic model can predict steam mass flow, pressure, temperature, enthalpy and power on each turbine drum. The NN model can predict the generated mechanical power. Both models have been trained and validated on ...