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GAS TURBINE POWER PLANTS AND ITS SPECIFICATIONS

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   INTRODUCTION:  A combustion turbine, is a type of continuous and internal combustion engine. The basic operation of the gas turbine is a Brayton cycle with air as the working fluid:  The fourth step of the Brayton cycle (cooling of the working fluid) is omitted, as gas turbines are open systems that do not reuse the same air. THE THREE MAIN SECTIONS OF A GAS TURBINE: Figure 1. Gas Turbine The compressor  which draws air into the engine, pressurizes it, and feeds it to the combustion chamber at speeds of hundreds of miles per hour.  The combustion system  typically made up of a ring of fuel injectors that inject a steady stream of fuel into combustion chambers where it mixes with the air. The mixture is burned at temperatures of more than 2000 degrees F. The combustion produces a high temperature, high pressure gas stream that enters and expands through the turbine section.  The turbine  is an intricate array of alternate stationary and rot...
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GAS TURBINE POWER PLANTS AND ITS SPECIFICATIONS

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 INTRODUCTION:  A combustion turbine, is a type of continuous and internal combustion engine. The basic operation of the gas turbine is a Brayton cycle with air as the working fluid:  Atmospheric air flows through the compressor that brings it to higher pressure.  Energy is then added by spraying fuel into the air and igniting it so that the combustion generates a high-temperature flow; this high-temperature pressurized gas enters a turbine, producing a shaft work output in the process, used to drive the compressor.  The unused energy comes out in the exhaust gases that can be repurposed for external work, such as directly producing thrust in a turbojet engine, or rotating a second, power turbine that can be connected to a fan, propeller, or electrical generator.  The purpose of the gas turbine determines the design so that the most desirable split of energy between the thrust and the shaft work is achieved.  The fourth step of the Brayton cycle (cooli...
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Calibration of instruments

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  Instrument calibration is one of the primary processes used to maintain the instrument accuracy.  Calibration  is process of configuring an instrument to provide a result for a sample within an acceptable range. Eliminating factors that cause inaccurate measurements is a fundamental aspect of instrumentation design. Although the exact procedure vary from product to product, the calibration process generally involves using the instrument to test samples of one or more known values called as “calibrators.” The results are used to establish a relationship between the measurement technique used by the instrument and the known values. The process in essence teaches the instrument to produce results that are more accurate than those that would occur otherwise. The instrument can then provide more accurate results when samples of unknown values are tested in the normal usage of the product. Calibrations are performed using only few calibrators to establish the correlation at s...
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