Studi Kelayakan Teknik Penerapan Siklus Cogeneration Regenerative Di PG. Gempolkrep

Budyanto, Gigieh Ramadhan (2016) Studi Kelayakan Teknik Penerapan Siklus Cogeneration Regenerative Di PG. Gempolkrep. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pabrik Gula (PG) Gempolkrep adalah salah satu Pabrik Gula di lingkungan PT PERKEBUNAN X (PERSERO) yang menghasilkan Gula Kristal Putih (GKP). Pabrik gula ini didirikan pada tahun 1849. Saat ini kapasitas giling PG Gempolkrep telah mencapai 6000 Ton Tebu per hari dan menghasilkan kurang lebih 480 Ton gula setiap hari. Hal ini mengakibatkan meningkatnya kebutuhan listrik dalam proses produksi. Untuk memenuhi kebutuhan listrik PG Gempolkrep disuplai oleh pembangkit daya di dalam pabrik dengan kapasitas maksimum 9 MW. Dengan adanya rencana untuk melakukan ekspor listrik, maka untuk saat ini perlu diketahui kondisi eksisting Cogeneration Plant di Pabrik Gula Gempolkrep. Parameter kerja yang dihitung adalah ketersediaan bagasse, efisiensi cogeneration, efisiensi siklus, efisiensi boiler, dan heat rate. Dari penelitian ini akan didapatkan hasil perhitungan kondisi eksisting Cogeneration, yaitu ketersediaan bagasse yang hanya tersisa 27304,74 Ton dalam 5 bulan, efisiensi cogeneration sebesar 77,6 %, efisiensi siklus sebesar 5,78 %, heat rate sebesar 88179,93 kJ/kWh dan efisiensi boiler sebesar 70 %. Kemudian pada siklus Cogeneration Regeneratif variasi 40 bar didapatkan hasil daya turbin utama sebesar 8205,92 kW, efisiensi cogeneration sebesar 80,68 %, efisiensi siklus sebesar 12,83 %, heat rate sebesar 31184,17 kJ/kWh, serta lama operasi 8,59 bulan. Pada variasi 50 bar didapatkan hasil daya turbin utama sebesar 11849,96 kW, efisiensi cogeneration sebesar 8151 %, iii efisiensi siklus sebesar 15,47 %, heat rate sebesar 25860,97 kJ/kWh, serta lama operasi 8,33 bulan. Pada variasi 60 bar didapatkan hasil daya turbin utama sebesar 13045,97 kW, efisiensi cogeneration sebesar 81,65 %, efisiensi siklus sebesar 16,48 %, heat rate sebesar 24272,78 kJ/kWh, efisiensi boiler, serta lama operasi 8,27 bulan. Pada variasi 70 bar didapatkan hasil daya turbin utama sebesar 14762,99 kW, efisiensi cogeneration sebesar 81,96 %, efisiensi siklus sebesar 17,75 %, heat rate sebesar 22534,96 kJ/kWh, serta lama operasi 8,16 bulan. Pada variasi 80 bar didapatkan hasil daya turbin utama sebesar 16331,53 kW, efisiensi cogeneration sebesar 82 %, efisiensi siklus sebesar 18,95 %, heat rate sebesar 21108,26 kJ/kWh, serta lama operasi 7,99 bulan. =========================================================================== Sugar factory of Gempolkrep was one of sugar factory in PT PERKEBUNAN X that producing white crystal sugar. This factory was built in 1849. Currently, the milling capacity was 600 ton cane per day and produced about 480 ton sugar per day. It caused incresing the needed of electricity for production. As for that, there are power generation sistem inside the factory with maximum power 9 MW. There was a plan that in the future, sugar factory will export the electricity outside. So as for that, for now it necessary to know the exsisting condition of the factory. The works parameters that will calculate were availbility of bagasse, cogeneration efficiency, cycle efficiency, boiler efficiency, and heat rate. The outcome from this research were the calculate for availbility bagasse wasonly remain 27304,74 ton in 5 months. Cogeneration efficiency was 77,6 %. Cycle efficiency was 5,78 %, heat rate was 88179,93 kJ/kWh and Boiler efficiency was 70 %. And for Cogeneration Regenerative cycle for variation 40 bar can be obtained power of main turbine was 8205,92 kW, cogeneration efficiency was 80,68 %, cycle efficiency was 12,83 %, heat rate was 31184,17 kJ/kWh, and operational duration was 8,59 months. For variation 50 bar can be obtained power of main turbine was 11849,96 kW, cogeneration efficiency was 81,51 %, cycle efficiency was 15,47 %, heat rate was 25860,97 kJ/kWh, and operational duration was 8,33 months. For variation 50 bar v can be obtained power of main turbine was 13045,97 kW, cogeneration efficiency was 81,65 %, cycle efficiency was 16,48 %, heat rate was 24272,78 kJ/kWh, and operational duration was 8,27 months. For variation 70 bar can be obtained power of main turbine was 14762,99 kW, cogeneration efficiency was 81,96 %, cycle efficiency was 17,75 %, heat rate was 22534,96 kJ/kWh, and operational duration was 8,16 months. For variation 80 bar can be obtained power of main turbine was 16331,53 kW, cogeneration efficiency was 82 %, cycle efficiency was 18,95 %, heat rate was 21108,26 kJ/kWh, and operational duration was 7,99 months.

Item Type: Thesis (Undergraduate)
Additional Information: RSM 621.31 Bud s
Uncontrolled Keywords: Pabrik Gula; Cogeneration; Kondisi Eksisting; Ketersediaan Bagasse; Efisiensi Cogeneration; Efisiensi Siklus; Efisiensi Boiler; Heat Rate; Ekspor Listrik; Sugar Factory; Cogeneration; Existing Condition; Availbility of Bagasse; Cogeneration Efficiency; Cycle Efficiency; Boiler Efficiency; Heat Rate; Exporting Electricity
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Industrial Technology > Mechanical Engineering > (S1) Undergraduate Theses
Depositing User: Mrs Anis Wulandari
Date Deposited: 07 Jun 2017 04:47
Last Modified: 26 Dec 2018 06:57
URI: http://repository.its.ac.id/id/eprint/41520

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