Perancangan Sistem Pengendalian Suplai Udara Bertekanan Ke Combustion Section Menggunakan Logic Solver Pada Combustion Section Gas Turbine Generator (GTG) Di PT. Saka Indonesia Pangkah Limited

Yavianda, Maulana Erryan (2020) Perancangan Sistem Pengendalian Suplai Udara Bertekanan Ke Combustion Section Menggunakan Logic Solver Pada Combustion Section Gas Turbine Generator (GTG) Di PT. Saka Indonesia Pangkah Limited. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Berdasarkan data lapangan Gas Turbin Generator Centaur 40 yang telah didapatkan dari PT. Saka Indonesia Pangkah Limited diketahui bahwa gas turbin generator tersebut memiliki combustion chamber yang menghasilkan temperature pembakaran yang mendekati temperature maksimal yang dapat ditampung di combustion chamber yaitu1573 kelvin dimana untuk kondisi normal temperature maksimal yang dapat dicapai adalah 1211 kelvin. Oleh karena itu perlu diberikan sistem pengendalian laju aliran massa udara dan suplai bahan bakar berdasarkan data aktual yang berada di lapangan sehingga suplai udara dan bahan bakar dikendalikan supaya temperatur di combustion chamber tetap terjaga dibawah 1573 kelvin. Sistem pengendalian laju aliran massa udara menggunakan aktuator berupa control valve FV 7076 dimana pada tugas akhir ini menggunakan pengendalian dengan fungsi sebab akibat yaitu logic solver. Logic solver memberikan sinyal kendali agar aliran massa udara tetap konstan di nilai maksimal yang dihasilkan oleh kompresor 7.783 Kg/s. Logic solver sebagai pembuat keputusan berdasarkan masukan berupa temperature transmitter dimana apabila bacaan pada temperature transmitter berada di rentan 4 mA hingga 20 mA maka pembakaran di combustion chamber masih dalam kondisi yang aman namun apabila bacaan temperature transmitter melebihi itu maka akan di berikan sinyal kendali melalui logic solver agar suplai udara dan bahan bakar tetap di kondisi yang aman agar tempera maksimamaka laju aliran massa bahan bakar akan dikendalikan dengan mode pengendalian proportional integral (PI) agar pembakaran di combustion chamber sesuai set point. Kata Kunci: GTG, combustion chamber, logic solver ==================================================================================================================== Based on field data from the Centaur 40 Gas Turbine Generator that has been obtained from PT. Saka Indonesia Pangkah Limited is known that the gas turbine generator has a combustion chamber that produces a combustion temperature that is close to the maximum temperature that can be accommodated in the combustion chamber which is 1573 kelvin where for normal conditions the maximum temperature that can be achieved is 1 211 kelvin. Therefore it is necessary to provide a system of controlling the flow rate of air mass and fuel supply based on actual data in the field so that the air supply and fuel are controlled so that the temperature in the combustion chamber is maintained below 1573 kelvin. The air mass flow rate control system uses an actuator in the form of a control valve FV 7076 which in this final project uses a control with a cause and effect function that is logic solver. Logic solver provides a control signal so that the mass flow of air remains constant at the maximum value generated by the compressor 7,783 Kg / s. Logic solver as a decision maker based on input in the form of a temperature transmitter where if the reading at the temperature of the transmitter is in the range of 4 mA to 20 mA then combustion chamber combustion is still in a safe condition, but if the transmitter temperature reading exceeds it, it will be given a control signal through the logic solver so that the air supply and fuel remain in safe conditions so that the temperature does not exceed the maximum limit and if the temperature is still below the maximum limit then the mass flow rate of the fuel will be controlled by proportional integral control mode (PI) so that combustion in the combustion chamber matches the set point Keywords: GTG, combustion chamber, air-fuel ratio, logic solver

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: GTG, combustion chamber, logic solver, GTG, combustion chamber, logic solver
Subjects: T Technology > T Technology (General) > T55 Industrial Safety
Divisions: Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Maulana Erryan Yavianda
Date Deposited: 28 Aug 2020 04:42
Last Modified: 28 Aug 2020 04:42
URI: https://repository.its.ac.id/id/eprint/81604

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