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.
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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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