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Ketut Astawa
Program Studi Teknik Mesin, Fakultas Teknik Universitas Udayana
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Physics Public Health Social Sciences

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Pengaruh variasi jenis pasir sebagai media penyimpan panas terhadap performansi kolektor suya tubular dengan pipa penyerap disusun secara seri Ketut Astawa; Nengah Suarnadwipa
Jurnal Energi Dan Manufaktur Vol 9 No 2 (2016): Oktober 2016
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak:Kolektor surya tubular dengan pipa penyerap yang disusun secara seri dengan menggunakan variasi jenis pasir sebagaimedia penyimpanan panas dimana fluida kerja yang mengalir pada susunan kolektor surya tubular secara seri mendapatpemanasan yang berulang sepanjang pipa penyerap sehingga diharapkan panas yang diserap oleh fluida lebih maksimal.Rancangan alat uji ini terdiri dari 3 kolektor surya dimana kolektor pertama dengan variasi jenis pasir pantai warna hitam,kolektor kedua dengan variasi jenis pasir pantai warna putih, kolektor ketiga dengan variasi jenis pasir pantai warna hitammengkilap. Secara keseluruhan kolektor surya ini terdiri dari masing-masing tiga buah modul, dimana setiap modul darimasing-masing kolektor terdiri dari satu buah pipa penyerap. Metode pengujian yang digunakan adalah pengujianexperimental terhadap rancang bangun kolektor surya tersebut untuk mendapatkan performansi terbaik dari variasi jenispasir sebagai media penyimpan panas.Efisiensi aktual (?a) kolektor surya tubular dengan pipa penyerap yang disusunsecara seri dengan menggunakan variasi jenis pasir sebagai media penyimpanan panas paling tinggi diperoleh pada kolektorsurya tubular dengan variasi jenis pasir pantai warna hitam mengkilap dibandingkan dengan efisiensi aktual (?a) kolektorsurya tubular dengan variasi jenis pasir pantai warna hitam dan kolektor surya tubular dengan variasi jenis pasir pantai warnaputih.Kata kunci: Kolektor surya tubular yang disusun seri, variasi jenis pasir, efisiensi aktual kolektorAbstract:Tubular solar collectors with absorber pipes arranged in series using variations of type of sand as a heat storage medium inwhich the working fluid flowing in the composition of tubular solar collectors in series get repetitive heating along the pipelineso hopefully absorbing the heat absorbed by the fluid more leverage. The design of this test equipment consists of three solarcollectors, the first collector with variations black sand beaches, the second collector with variations white sand beaches, thethird collector with variations shiny black sand beaches. Overall solar collector consists of three pieces each of the modules,the module of each collector consists of an absorber pipes. Testing method used was experimental testing of the solarcollector design is to get the best performance from variations of type of sand as a heat storage medium. The actualefficiency (?a) tubular solar collectors with absorber pipes arranged in series using variations of type of sand as a heatstorage medium highest obtained in tubular solar collectors with variations shiny black sand beaches compared to the actualefficiency (?a) tubular solar collectors with variations black sand beaches and tubular solar collectors with variations whitesand beaches.Keywords: Tubular solar collectors arranged in series, variations of type of sand, the actual efficiency of the collector
Study Experimental Distance to Pressure Coefficient Double Cylinders Positioned Alined Ketut Astawa; Sukadana -; Karnata -
Jurnal Energi Dan Manufaktur Vol 3, No.2 Oktober 2009
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Factors affecting of coefficient of pressure are fluid velocity, fluid density, fluid viscosity and geometry of surface which is pasted by fluid. This research is conducted by variation of some factors affecting value of pressure coefficient that are surface geometry including cylindrical shape and bluff body, and variation of free stream. The pressure to be measured is based by change of oil column length (r, mm) at incline manometer which is connected to pressure tap located on cylindrical surface. Pressure data collected based on three types of space tube variation, there are 1.2D, 1.7D, and 2.2D, and three types of cylindrical diameter variation there are 2”, 2.5” and 3”, and free stream is kept to be constant at 6 m/s. The results of research show that, the higher space tube affecting on the value and position of maximum pressure on the back cylindrical. Value and position of separation point is more to be back direction as increasing of free stream. Pressure drop happen on back cylindrical at high free stream.
Analisis performansi kolektor surya pelat datar dengan diameter lubang sirip berbeda sebagai impinging jet Ketut Astawa; I Gusti Ngurah Putu Tenaya
Jurnal Energi Dan Manufaktur Vol 14 No 2 (2021)
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2021.v14.i02.p03

Abstract

Solar collector is a device that is able to absorb and transfer heat from solar energy to the working fluid. Solar collectors in general, use a mass flow rate of air that is parallel to the absorbent plate, the air entering the inlet will pass through the absorbent plate and exit directly through the outlet. To improve the performance of the solar collector, modifications were made, namely by adding perforated fins with various hole diameters. The hollow fin is intended as a place for hot fluid to flow in the collector. The solar collector used in this study is a flat plate solar collector. The workings of the solar collector itself is that solar radiation is absorbed by the absorber plate and then transferred to the fluid flowing in the pipe above the absorber plate. The intended diameter modification is to make the hole diameters vary from a large diameter near the inlet to a small diameter near the outlet and from a small diameter near the inlet to a large diameter near the outlet which is installed in parallel. Variations in the diameter of the fin holes are 90mm, 70mm, 50mm, 30mm and 10mm while the placement of the perforated fins is done alternately, from large to small diameter and vice versa. The performance obtained is for useful energy from large to small diameter of 108.71 W while from small to large fin diameter 62.23 W. For efficiency it is obtained 22.62% for variations from large to small diameter and 12.38% for small to large variations.
Pengaruh Penempatan Sirip Berbentuk Segitiga Yang Dipasang Secara Aligned Dan Staggered Terhadap Performansi Kolektor Surya Pelat Datar Ketut Astawa; I Nengah Suarnadwipa
Jurnal Energi Dan Manufaktur Vol 8 No 2 (2015): Oktober 2015
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak:Energi surya adalah jenis energi terbarukan yang umum digunakan karena ketersediaannya yang sangat besar. Teknologi pengolah energi surya, salah satunya adalah kolektor surya. Kolektor surya pada umumnya, menggunakan laju aliran massa udara yang secara parallel melewati pelat penyerap. Udara yang masuk inlet akan melewati pelat penyerap dan langsung keluar melalui outlet. Penelitian ini dilakukan untuk membandingkan pengaruh penempatan sirip berbentuk segitiga yang dipasang secara alignedyang mengarah ke atas pada bagian atas pelat penyerap dan staggeredyang mengarah ke bawah pada bagian bawah dari pelat penyerap sehingga akan terjadi aliran udara secara turbulen di dalam kolektor dan dengan penambahan sirip segitiga ini juga dapat memperluas daerah penyerapan panas pada pelat penyerap kolektor surya yang secara langsung memperluas permukaan perpindahan panas dari pelat penyerap ke fluida kerja yang nantinya diharapkan mampu menghasilkan temperatur keluar kolektor yang lebih tinggi dan meningkatkan performansi kolektor surya pelat datar.Penelitian ini dilakukan secara eksperimen, sebagai variable bebas dalam penelitian ini adalah intensitas radiasi matahari dan variabel terikatnya adalah energi berguna dan efisiensi kolektor surya pelat datar.Dari hasil pembahasan penempatan sirip berbentuk segitiga pada kolektor surya pelat datar yang dipasang secara staggered menghasilkan energi berguna dan efisiensi yang lebih besar dibandingkan dengan kolektor surya yang dipasang secara aligned. Dilihat dari rata-rata hariannya energi berguna untuk kolektor bersirip aligned adalah 153.01 Watt dan untuk kolektor bersirip staggered sebesar 157.42 Watt, sedangkan untuk efesiensinya pada kolektor surya bersirip aligned adalah 37.94% dan untuk kolektor bersirip staggered42.12 %.Kata kunci : Performansi kolektor surya pelat datar, sirip segitiga aligned, sirip segitiga staggeredAbstract:Solar energy is a type of renewable energy that is commonly used because of its availability is very large. Processing technology of solar energy, one of which is a solar collector. Solar collectors in general, using the mass flow rate of air which passes parallel absorber plates. Incoming air inlet will pass through the absorber plate and directly out through the outlet. This study was conducted to compare the effect of the placement of a triangular fin mounted aligned that leads upward to the top of the absorber plate and staggered downward at the bottom of the absorber plate so that it will occur in the turbulent air flow in the collector and with the addition of a triangular fin This can also extend the area of heat absorption in the absorber plate solar collector that directly expand the surface area of heat transfer from the working fluid to the absorber plate which hopefully will be able to produce out collector temperature is higher and improve performance of flat plate solar collector.This research was carried out experimentally, as the independent variable in this study is the intensity of solar radiation and the dependent variable is useful energy and efficiency flat plate solar collector.From the discussion, a triangular fin placement on flat plate solar collectors are mounted in staggered generate useful energy and greater efficiency than the solar collectors are biggest aligned. Judging from the average daily useful energy for finned aligned collector is 153.01 Watt and for collectors finned staggered at 157.42 Watt, while for its efficiency in solar collector finned aligned is 37.94% and for the collector finned staggered 42.12%.Keywords: Performance flat plate solar collectors, triangular fins aligned, triangular finsstaggered
Analisa Performansi Destilasi Air Laut Tenaga Surya Menggunakan Penyerap Radiasi Surya Tipe Bergelombang Berbahan Dasar Beton Ketut Astawa; Made Sucipta; I Putu Gede Artha Negara
Jurnal Energi Dan Manufaktur Vol 5, No.1 April 2011
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

In principle, the distillation is a way to get clean water through desalination process dirty. In the refining processthere is a process of heat transfer, evaporation, and condensation. Heat transfer occurs from the heat source to the dirtywater. If water continues - it will happen again heated evaporation process. This steam on contact with cold surfaces it willbe a process of condensation on cold surfaces. In the distillation process condensate water is captured, germs and bacteriawill die by the heating process, and dirt will settle to the bottom basin One can use the sun's energy.In the system of solar distillation of sea water, absorber plate very important role because it serves as an absorberof solar radiation and convert light into heat energy that will heat the sea water above it. Based on the initial hypothesis ofthe authors that the type of flat-plate absorber is less than optimal, I will attempt to create a design and compare theperformance of sea water distillation appliance that uses a flat type absorber, absorber types of wavy, and wavy-coatedabsorbent type gravel. On the premise that type absorber has a broad corrugated heat absorption field is greater than theflat type absorber.Tests conducted from 09:00 am until 17:00 pm. The volume of sea water in the test as much as 30 liters. Testresults show the type of radiation absorber coated corrugated gravel produces more condensate is equal to 1295 grams withan average efficiency reaches 12.33%, and the type of radiation absorbent corrugated produce condensate for 1250 gramswith an average efficiency reaches 12.84% . While the radiation absorber can only produce a flat type of 795 ml with anaverage efficiency reaches 8.48%.
Kinerja Termal Pipa Kalor Tembaga pada Fluida Kerja Air David Febraldo; Wayan Nata Septiadi; Ketut Astawa
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 5 No 1 (2019)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2019.v05.i01.p07

Abstract

Pipa kalor (Heat pipe) merupakan salah satu teknologi penukar kalor dua fase sistem pasif, pipa kalor itu sendiri memiliki struktur dengan konduktivitas termal tinggi, hal ini memungkinkan transportasi panas dengan mempertahankan perbedaan suhu sehingga seragam di sepanjang bagian yang dipanaskan dan didinginkan. Kinerja termal pipa kalor dapat ditentukan dari nilai hambatan panas. Ketika hambatan panas bernilai kecil, maka laju perpindahan kalor meningkat begitu pula sebaliknya. Pengujian kinerja termal pipa kalor tembaga pada fluida kerja air telah dilakukan. Kinerja termal dapat diamati dari hasil pengambilan data temperatur dan pengolahan data. Hasil dari penelitian ini menunjukkan perbedaan temperatur antara temperatur pemanas dan dan temperatur fluida terus meningkat dengan kenaikan laju perpindahan panas dari variasi beban pemanasan 70 volt, 90 volt, 110 vot, 130 volt, dan 150 volt. Heat pipe is a passive two-phase heat exchanger technology, heat pipe itself has a structure with high thermal conductivity, this allows heat transportation by maintaining a uniform temperature difference along the heated and cooled part. Thermal performance of heat pipes can be determined from the value of heat resistance. When heat resistance is small, the heat transfer rate increases and vice versa. Testing the thermal performance of copper heat pipes on the working fluid of water has been carried out. Thermal performance can be observed from the results of temperature data collection and data processing. The results of this study indicate the temperature difference between heating temperature and fluid temperature continues to increase with increasing heat transfer rates from variations in heating loads of 70 volts, 90 volts, 110 vot, 130 volts, and 150 volts.
Koefisien Perpindahan Panas Sumbu Kapiler Pipa Kalor berbasis Sintered Powder Tembaga pada Fluida Kerja Hybrid Nanofluida Al2O3 – TiO2 – H2O dengan Komposisi Ratio 50% : 50% Ferdy Yonathan Maxwell Tamba; Wayan Nata Septiadi; Ketut Astawa
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 5 No 1 (2019)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2019.v05.i01.p03

Abstract

Pipa kalor memiliki konduktivitas termal tinggi dimana memindahkan panas dengan mempertahankan perbedaan suhu menjadi sama dibagian yang dipanaskan dan didinginkan. Kinerja termal pipa kalor dapat ditentukan dari nilai hambatan panas, dimana jika hambatan panas besar maka laju perpindahan kalor menurun dan begitu juga sebaliknya. Faktor yang mempengaruhi nilai hambatan panas adalah fluida kerja sebagai media penghantar kalor dan wick sebagai media fluida cair yang bersikulasi dengan prinsip kerja kapilaritas. Kapilaritas wick berbentuk rongga sehingga wick disebut juga porous media. Penelitian dilakukan dengan tujuan untuk mendapatkan nilai koefisien perpindahan panas menggunakan sumbu kapiler pipa kalor jenis sintered wick dengan Fluida kerja hybrid nanofluida Al2O3 – TiO2 – H2O dengan rasio perbandingan 50% : 50%. Berdasarkan hasil penelitian dapat disimpulkan nilai koefisien perpindahan panas pada pengujian didih kolam sumbu kapiler pipa kalor berbasis sintered wick menggunakan fluida kerja hybrid nanofluida Al2O3 – TiO2 – H2O dengan komposisi rasio perbandingan 50% : 50% adalah 20,8 kW/m2.K. Heat pipes have high thermal conductivity which transfers heat by keeping the temperature difference to be the same in the heated and cooled part. Thermal performance of heat pipes can be determined from the value of heat resistance, where if the heat resistance is large then the heat transfer rate decreases and vice versa. Factors that influence the value of heat resistance are the working fluid as a medium for conducting heat and wick as a liquid fluid medium that is circulating with the working principle of capillary. Capillary wick takes the form of a cavity so that wick is also called porous media. The research was conducted to obtain the heat transfer coefficient using capillary axes of sintered wick type heat pipe with a working fluid hybrid nanofluid Al2O3 - TiO2 - H2O with a ratio of 50%: 50%. Based on the results of the study it can be concluded that the value of heat transfer coefficient on boiling-pool capillary heat test based on sintered wick using hybrid working fluid of nanofluid Al2O3 - TiO2 - H2O with composition ratio of 50%: 50% is 20,8 kW/m2.K.
Pengaruh Temperatur Double Dan Single Kondensor Cascade Straight Heat Pipe Pendingin CPU Kadek odik Widiantara; Wayan Nata Septiadi; Ketut Astawa
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 5 No 2 (2019)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2019.v05.i02.p05

Abstract

Kebutuhan masyarakat akan komputer sangat tinggi. Komputer dapat diartikan sebagai alat yang dipakai untuk mengolah data menurut prosedur yang telah dirumuskan. Komputer itu sendiri terdiri dari perangkat keras (Hardware) dan perangkat lunak (Software). Salah satu komponen penting dalam komputer ialah Central Processing Unit (CPU) yang merupakan perangkat keras. Kondisi komputer yang dibebani kerja tentunya akan mengakibatkan CPU bekerja lebih keras dan menyebabkan CPU lebih cepat panas. Panas inilah yang dapat mengganggu kinerja dari CPU tersebut, oleh karena itu panas ini harus dibuang. Era sekarang ini, sistem pendinginan untuk CPU mulai mengarah pada penggunaan heat pipe sebagai pendingin. Heat pipe ini dapat mengatasi panas yang ditimbulkan oleh CPU yang nantinya akan membantu mengembalikan performa dari CPU tersebut. Untuk membantu menurunkan temperatur CPU digunakan heat pipe dengan desain single dan double kondensor cascade straight heat pipe. Perlakuan yang diberikan dalam pengujian cascade straight heat pipe dengan pemberian kalor masing-masing besarnya idle 10 (watt), 20 (watt), 30 (watt), 40 (watt) dan maksimal 48 (watt). Dari percobaan yang telah dilakukan menunjukkan hasil yang diberikan oleh cascade straight heat pipe untuk double kondensor menghasilkan temperatur lebih rendah dibandingkan single kondensor dimana temperatur mengalami penurunan sebesar 1,169°C pada pemberian kalor 20 watt, 0,437°C pada pemberian kalor 30 watt, 2,657°C pada pemberian kalor 40 watt dan 3,565°C pada pemberian kalor 48 watt. Computers needs in comunity is very high. Computers can be interpreted as a tool used to process data according to procedures that have been formulated. The computer consists of hardware (Hardware) and software (Software). One important component in a computer is the Central Processing Unit (CPU) which is the hardware. The condition of a computer that is burdened with work will require the CPU to work faster and cause the CPU to heat up faster. The heat must be removed from the CPU, because of the heat that must be removed. In this current era, the system supports CPUs. Starting to use heat pipes as a cooler. This heat pipe can overcome the heat generated by the CPU that is needed will help restore the performance of the CPU. To help reduce CPU temperature, a single and double cascade condenser heat pipe is used. The treatment given in the straight heat pipe cascade test by giving each value is idle 10 (watts), 20 (watts), 30 (watts), 40 (watts) and a maximum of 48 (watts). From the experiments conducted the results given by the straight cascade of heat pipes for multiple condensers produce lower temperatures than single condensers while the temperature requires a decrease of 1.169 ° C for the provision of 20 watts of heat, 0.437 ° C for 30 watt heat assistance, 2.657 ° C at the provision of heat of 40 watts and 3.565 ° C in the provision of heat of 48 watts.
Performansi Sistem Pendingin Dengan Staggered Solid Dry Pad Pendingin Awal Udara Evaporator I Gede Biyan Mulyana; Hendra Wijaksana; Ketut Astawa
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 5 No 2 (2019)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2019.v05.i02.p01

Abstract

Performansi sistem pendingin dengan penggunaan SDP yang tersusun staggered sebagai pendingin awal udara masuk evaporator dengan memvariasikan kecepatan laju aliran massa udara diharapkan dapat memperingan kerja pada kompressor. Metode pengujian dilakukan dengan cara menguji kinerja mesin dan performan sistem pendingin dengan SDP dan tanpa SDP. Variabel yang diukur saat pengujian adalah evaporator, SDP, COP, dan daya compressor. Dari hasil penelitian didapat bahwa Performansi sistem pendingin dengan penggunaan SDP yang tersusun staggered sebagai pendingin awal udara masuk evaporator dengan menvarasikan kecepatan laju aliran massa udara, bahwa penggunaan SDP sangat berpengaruh dengan baik dalam menurunkan temperatur udara masuk sampai 17 °C dibandingkan tanpa menggunakan SDP. Pada pemakaian SDP konsumsi daya kompresor pendinginan masing – masing mencapai 0,330 kW, 0,313 kW dan 0,297 kW lebih efektif daripada tanpa menggunakan SDP sebesar 0,363 kW. Lalu pada kapasitas pendinginan yang terbaik juga dengan penggunaan SDP sebesar 3,044 kW, 1,664 kW dan 0,879 kW, hal ini berdampak pada hasil COP yang terbaik dengan penggunaan SDP ialah 11,6. Pada sifat udara yang dihasilkan yaitu pendinginan dan dehumidifikasi dimana udara tersebut akan didinginkan dan dikeringkan. The performance of the cooling system with the use of SDP arranged staggered as the initial cooling of the air entering the evaporator by varying the speed of the air mass flow rate is expected to reduce the work on the compressor. The testing method is done by testing the engine performance and performance of the cooling system with SDP and without SDP. Variables measured during testing are evaporator, SDP, COP, and compressor power. From the results of the study, it was found that the performance of the cooling system with the use of SDP arranged staggered as the initial cooling of the air entering the evaporator by varying the speed of air mass flow, that the use of SDP is very influential in reducing the air temperature to 17 ° C compared without using SDP. The use of SDP for cooling compressor power consumption reaches 0.330 kW, 0.313 kW and 0.297 kW more effectively than without using SDP of 0.363 kW. Then at the best cooling capacity also with the use of SDP of 3.044 kW, 1.664 kW and 0.879 kW, this has an impact on the COP results the best with SDP use is 11.6. In the nature of the air produced is cooling and dehumidification where the air will be cooled and dried.
Analisa Unjuk Kerja Sistem PLTG di PT Indonesia Power Unit Pembangkitan Bali Musa Aleksander Partogi; I Gusti Bagus Wijaya Kusuma; Ketut Astawa
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 4 No 1 (2018)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2018.v04.i01.p03

Abstract

Pembangkit Listrik Tenaga Gas (PLTG) merupakan salah satu mesin pembangkit yang digunakan PT. Indonesia Power UP Bali dalam kegiatan industri pembangkit di Indonesia. Dalam pengoperasiannya mulai tahun 1994 hingga sekarang mesin PLTG masih menggunakan minyak solar/HSD sebagai bahan bakar pembangkit.Penelitian ini dimaksudkan untuk menganalisa unjuk kerja sistem PLTG khususnya analisa keekonomian dengan membandingkan penggunaan bahan bakar minyak solar dan gas pada mesin pembangkit. Spesific Fuel Consumption (SFC) adalah rasio perbandingan total konsumsi bahan bakar terhadap daya listrik yang dibangkitkan, SFC digunakan sebagai salah satu cara untuk mengetahui seberapa efisien sebuah mesin pembangkit dan salah satu penentu biaya produksi khususnya biaya bahan bakar yang diperlukan dalam pembangkit.Berdasarkan hasil penelitian dengan harga minyak solar/HSD Rp 7300,- /liter dan gas US $ 11 /mmBTU, didapatkan biaya produksi listrik bahan bakar HSD secara aktual sebesar Rp 2541,86 /kWh, secara teoritis Rp 2336,00 /kWh dan gas secara teoritis Rp 1714,3 /kWh. Jika penjualan listrik Rp 1352,- /kWh, maka dengan menggunakan bahan bakar HSD akan berpotensi rugi sebesar Rp 1189,86 /kWh secara akutal, Rp 984,00 /kWh secara teoritis, dan Rp 362,00 /kWh dengan menggunakan bahan bakar gas. Gas Power Plant (PLTG) is one of the power plant used by PT. Indonesia Power UP Bali in the power plant industry in Indonesia. In operation from 1994 until now the PLTG engine is still using diesel oil / HSD as fuel generator. This research is intended to analyze the performance of PLTG system, especially economic analysis by comparing the use of diesel fuel and gas in generating machine. Specific Fuel Consumption (SFC) is the ratio of total fuel consumption to electric power generated, SFC is used as one way to find out how efficient a generating machine and one determinant of production cost, especially fuel cost required in generating. Based on research results with the price of diesel oil / HSD Rp 7300, - / liter and gas US $ 11 / mm BTU, the actual cost of producing HSD fuel electricity is Rp 2541,86 / kWh, theoretically Rp 2336,00 / kWh and gas theoretically Rp 1714.3 / kWh. If the sale of electricity is Rp 1352, - / kWh, then using HSD fuel will potentially loss as much as Rp 1189.86 / kWh on a theoretical basis, Rp 984.00 / kWh theoretically, and Rp 362.00 / kWh using gas fuel .
Co-Authors A.A. Kade Argha Dharmawan Ainul Ghurri Alin Kosasih David Febraldo Embang Herlambang Ferdy Yonathan Maxwell Tamba Gunawan, I Gede Nengah Wika Hendra Wijaksana I Gede Biyan Mulyana I Gede Teddy Prananda Surya I Gusti Bagus Wijaya Kusuma I Gusti Ngurah Nitya Santhiarsa I Gusti Ngurah Priambadi I Gusti Ngurah Putu Tenaya I Gusti Ngurah Putu Tenaya I Ketut Adi Sugita I Made Suardamana I Nengah Suarnadwipa I Nyoman Suprapta Winaya I Putu Gede Artha Negara I Wayan Hendra Saputra, I Wayan Hendra Ida Bagus Oka Jeve Imam Budi Santoso Kadek odik Widiantara Karnata - Ketut Budiarta Made Sucipta Musa Aleksander Partogi Negara, Komang Metty Trisna Petr Zamazal Rasmini, Ni Wayan Si Putu Gede Gunawan Tista Sukadana - Suryawan, Anak Agung Adhi tri setiady Wayan Nata Septiadi