Studi Kelayakan Harga Perolehan Gas CNG Di Pulau Bawean Sebagai Pengganti HSD Untuk Pembangkit Listrik Tenaga Mesin Gas

Magfiroh, Yesty (2015) Studi Kelayakan Harga Perolehan Gas CNG Di Pulau Bawean Sebagai Pengganti HSD Untuk Pembangkit Listrik Tenaga Mesin Gas. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kebutuhan energi listrik di Indonesia terus meningkat seiring meningkatnya pertumbuhan ekonomi. Kebutuhan listrik yang semakin tinggi menjadi tantangan bagi pemerintah serta PLN yang merupakan pemasok listrik dalam negeri.Salah satu defisit ekonomi Indonesia dikarenakan impor negara masih lebih tinggi, terutama untuk minyak. Solusi terbaik untuk menyelesaikan problem ini adalah melakukan diversifikasi energi dari bahan bakar minyak ke bahan bakar gas. Bahan bakar gas terutama CNG sangat cocok diterapkan di Indonesia. Salah satunya Pulau Bawean. Pulau Bawean yang disuplai 4 unit PLTD dengan menggunakan BBM HSD rencananya akan diganti dengan BBG CNG untuk PLTMG.Untuk itu perlu dibangun fasilitas penyediaan gas di pulau Bawean. Pembangunan beberapa fasilitas harus dihitung secara cermat baik dari segi teknik maupun ekonomi. Proses analisa dilakukan secara teknik dan ekonomi. Dimulai dengan perhitungan konsumsi listrik di Pulau Bawean,pertimbangan daya tertinggi untuk pemilihan genset,perhitungan sfc genset, perhitungan kebutuhan gas di Pulau Bawean,perhitungan gas yang akan dibawa ke Bawean, perhitungan spesifikasi spesifikasi peralatan utama seperti compressor, CNG storage, Kapal pengangkut, Skid di Bawean, Pressure Reducing System. Kemudian dilanjutkan dengan analisa secara ekonomi dengan menggunakan kriteria Biaya investasi dan biaya operasi. Dari analisa ini didapatkan spesifikasi peralatan utama PLTMG diantaranya: CNG Kompresor Temperatur masuk 30o c, Tekanan masuk 2Mpa, daya 567,89 kw, kapasitas 4831,6 NCMH, CNG Storage kapasitas berat total 29888 kg, tekanan kerja 25 MPA, temperatur kerja -40oc-60oc, PRU tekanan masuk 250 bar, tekanan keluar 3 bar; spesifikasi kapal LOA 48 meter lebar 9 m, tinggi 3,5 meter, main engine 2x405HP, spesifikasi pipa ke kompresor diameter 3 in dan Schedule 40; spesifikasi pipa dari kompresor ke skid adalah diameter pipa 1 in schedule xxs; spesifikasi pipa dari dermaga ke daughter station adalah diameter pipa 1 in schedule xxs. Harga perolehan gas di Pulau Bawean yakni Rp 10.381,00 lebih murah dibandingkan dengan harga 1 liter HSD yang berkisar Rp 11 060,27. =============================================================================================== Electrical energy in Indonesia continues to increase with increasing economic growth. The higher demand for electricity become a challenge for the government and PLN which is a supplier of electricity in Indonesia.One of the economic defisit in Indonesia because the country imports is still higher , particularly for oil . The best solution to resolve this problem is to diversify energy from fuel oil to gas fuel . Especially CNG fuel gas is very suitable to be applied in Indonesia. Bawean island supplied four diesel power units using HSD fuel planned to be replaced with CNG for PLTMG. It is necessary to build facilities for the supply of gas in Bawean island . Construction of some facilities must be calculated in both technical and economic analysis. The process includes the technical and economic analysis. Starting with the calculation of power consumption in the Bawean island , using the highest power to selection the gas engine, calculate specific fuel consumption of gas engine , calculation of gas which needs in Bawean Island a day , calculation of gas that will be taken to Bawean , calculation of specifications of major equipment such as compressor , CNG storage , transport vessels, Pressure Reducing System. Then proceed with the economic analysis using the criteria of investment costs and operating costs . The results obtained from this analysis are the spesification of CNG Compressor are inlet temperature 30 ° C , Inlet pressure 2Mpa , power 567.89 kw, capacity of 4831.6 NCMH ; CNG storage , total weight of 29 888 kg,working pressure 25 MPA , the working temperature -40oc -60oc; PRU inlet pressure of 250 bar , the outlet pressure 3 bar ; vessel specifications LOA 48 meters width 9 m , height of 3.5 meters , the main engine Yanmar 2x405HP , Pipe diameter specifications, from gas tapping to compressor are 3 in and Schedule 40 ; pipe specifications from the compressor to skid is diameter of the pipe 1 in and schedule XXS ; pipe specification from the skid in vessel to the daughter station is diameter of the pipe 1 in and the schedule XXS . The acquisition price of gas for Bawean Island is Rp 10 381,00. This is cheaper than the price of 1 liter HSD ,Rp 11 060,27

Item Type: Thesis (Undergraduate)
Additional Information: RSM 621.31 Mag s
Uncontrolled Keywords: PLTMG,Gas Alam, CNG, Pulau Bawean
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ778 Gas turbines
Divisions: Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: Yeni Anita Gonti
Date Deposited: 27 Feb 2020 07:48
Last Modified: 27 Feb 2020 07:48
URI: http://repository.its.ac.id/id/eprint/75220

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