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"ABSTRAKPengembangan kawasan minapoitan sering terkendala karena jauh grid dari tambak petani, sehingga petani membutuhkan genset untuk menjalankan aerator dan peralatan lainnya. Potensi daerah minapolitan desa Domas adalah angin biomassa sekam padi dan sinar matahari. Pada penelitian ini sumber daya energy baru terbarukan angin dan biomassa akan dijadikan pembangkit energi terbarukan untuk mejalankan kegiatan ekonomi di tambak. Turbin angin vertika hibrida savonius darrieus dirancang, dimanufaktur, dan di uji untuk mendapatkan performa turbin anginnya, dan sistem termal biomassa di uji untuk dijadikan penyangga dalam sistem ini di sesuaikan dengan potensi alam sekitar. Dari optimasi sistem disimpulkan bahwa dibutuhkan 12 unit turbin angin dan sistem termal biomassa sebesar 4,8 kW.  Turbin angin vertikal hibrida savonius darrieus memiliki performa dengan Cp maksimum sebesar 38.9% pada TSR 0.89, dan power rating sistem termal biomassa sebesar 5.247 kW dengan efisiensi.

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ABSTRACTThe development of the Minapoitan area is constrained due to the far grid of farmers' farms, so farmers need generators to run aerators and other equipment. Potential of the Domas village Minapolitan area is wind rice husk biomass and sunlight. In this study new wind and biomass, renewable energy resources will be used as renewable energy plants to carry out economic activities in the ponds. The hybrid wind turbine savonius darrieus was designed, manufactured, and tested to get the performance of its wind turbines, and the biomass thermal system was tested to be used as a buffer in this system according to the potential of the surrounding environment. From the system optimization, it was concluded that 12 wind turbine units and a biomass thermal system were needed at 4.8 kW. Vertical hybrid wind turbine Savonius Darrieus has a maximum Cp performance of 38.9% at TSR 0.89, and a thermal biomass power rating system of 5.247 kW and efficiency 0.553 kW / kg rice husk.

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"Hasil pertemuan COP 26 (Conference of the Parties 26^th) Konvensi Kerangka Kerja Perserikatan Bangsa-Bangsa berkomitmen untuk menekan laju percepatan perubahan iklim akibat emisi karbon dengan menggantikan energi berbahan baku fosil menjadi energi baru terbarukan (EBT). Indonesia menargetkan pada tahun 2060 phase out batu-bara diganti EBT pada tahun 2056. Sebagai negara tropis yang dialiri banyak sungai dan terdapat banyak danau, Indonesia memiliki potensi energi air sebesar 75.000 MW. Dibeberapa daerah terpencil keperluan daya listrik yang digunakan skala piko (< 5kW). Turbin vortek dipilih karena cocok untuk aliran sungai dengan tinggi jatuh air rendah, biaya pemeliharaan dan konstruksi murah, serta ramah untuk ekosistem dalam air. Studi ini bertujuan mengetahui perbandingan kinerja vortek terhadap perbedaan bentuk sudu skala piko. Studi ini dilakukan dengan variasi bentuk sudu lurus, miring, dan melengkung. Berdasarkan seluruh hasil studi turbin vortek dapat disimpulkan bahwa bentuk sudu terbaik yang diperoleh secara analitik, numerikal dan eksperimenal adalah sudu miring dengan effisiensi hidrolik sebesar 68% untuk analitikal, 36%, untuk numerical, dan 29% untuk eksperimenal. Perbedaan efisiensi antara perhitungan analitikal, numerikal dan eksperimenal terjadi karena adanya beberapa kerugian-kerugian yang tidak dapat dihitung dalam perhitungan metode eksperimenal.

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The results of the COP 26 (Conference of the Parties 26th) meeting of the United Nations Framework Convention are committed to reducing the rate of acceleration of climate change due to carbon emissions by replacing energy made from fossil fuels into new and renewable energy (EBT). Indonesia targets that in 2060 the coal phase out will be replaced by renewable energy in 2056. As a tropical country with many rivers and many lakes, Indonesia has a water energy potential of 75,000 MW. In some remote areas, the need for electrical power is pico scale (< 5kW). The vortex turbine was chosen because it is suitable for river flow with low water fall, relatively low maintenance and construction costs, and friendly to the aquatic ecosystem. This study aims to compare the performance of the vortex to the differences in the shape of the pico scale blade. This study was carried out with variations in the shape of the straight, tilted, and curved blades. Based on all the results of the vortex turbine study, it can be concluded that the best blade shape obtained analytically, numerically and experimentally is an inclined blade with a hydraulic efficiency of 68% for analytical, 36%, for numerical, and 29% for experimental. The difference in efficiency between analytical, numerical and experimental calculations occurs because of some losses that cannot be calculated in the calculation of the experimental method."

"Umumnya, daerah terpencil di Indonesia mengaplikasikan pembangkit listrik tenaga Diesel untuk menyediakan energy listrik dikarenakan mahalnya biaya grid extension. Hal yang menjadi perhatian dari penggunaan standalone generator diesel adalah fluktuasi harga bahan bakar minyak, serta gas emisi yang dihasilkan dari sisa-sisa pembakaran. Dalam upaya mengurangi penggunaan bahan bakar fosil diperlukan penggunaan energy terbarukan yang memiliki potensi untuk dikonfigurasikan secara hibrida dengan generator diesel. Studi ini akan membahas tentang analisis dari segi techno dan economic pada konfigurasi hybrid diesel PV baterai system dan hybrid diesel PV wind baterai system dengan menggunakan perangkat lunak HOMER. Jika dibandingkan dengan system generator diesel existing yang mempunyai nilai COE sebesar $0.1968/kWh, hasil optimasi dari hybrid diesel PV battery system dan hybrid diesel PV wind battery system mendapatkan penurunan cost of energy menjadi $0,1554/kWh dan $0,1555/kWh. Kemudian didapatkan hasil berupa penurunan konsumsi bahan bakar untuk kedua konfigurasi hybrid systems sebesar 53,83% dan 53,58% jika dibandingkan dengan standalone generator diesel existing. Sehingga, kedua hybrid system memiliki nilai Net Present Cost yang lebih rendah 21,04% dan 20,99% apabila dibandingkan dengan standalone diesel generator system existing. Di sisi lain, emisi CO2 yang dihasilkan kedua konfigurasi hybrid system telah mengalami penurunan dibandingkan dengan standalone diesel generator yakni sebesar 53,83% dan 53,57%.

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Generally, remote areas in Indonesia apply diesel power plants to provide electricity due to the high cost of grid extensions. The concern of the use of standalone diesel generators is fluctuations in the price of fuel oil, as well as gas emissions resulting from the remnants of combustion. To reduce the use of fossil fuels, it is necessary to use renewable energy which has the potential to be configured hybrid with a diesel generator. This study will discuss the techno and economic analysis of two different hybrid system configurations using the HOMER software. Those hybrid systems are consisting of diesel-PV-battery system and diesel-PV-wind turbine -battery system. There is a reduction in the cost of energy (COE) as the proposed hybrid system is compared with the existing diesel generator system. The COE of the existing system is $ 0.1968 / kWh, whereas the proposed hybrid diesel-PV-battery system and the hybrid diesel-PV-wind turbine-battery system are $0.1554/kWh and $0.1555/kWh, respectively. These optimized results show a reduction in fuel consumption for both hybrid systems configuration by 53.83% and 53.58% when compared to the existing standalone diesel generators. Thus, both hybrid systems have a lower Net Present Cost value of 21.04% and 20.99% when compared to the current standalone diesel generator system. On the other hand, CO2 emissions generated by the two-hybrid system configurations have decreased compared to standalone diesel generators, which were 53.83% and 53.57%, accordingly."

"Skripsi ini membahas terkait energi terbarukan yang akan menggantikan salah satu energi yang dibutuhkan masyarakat, yaitu Liquiefied Petroleum Gas (LPG). Energi terbarukan yang dibahas dalam skripsi ini adalah Dimethyl Ether (DME). Penelitian ini menggunakan analisa studi numerik melalui software Ansys yang dapat menganalisa suatu fluida, dalam hal ini api yang dihasilkan dari Dimethyl Ether (DME). Terdapat beberapa variabel yang diteliti pada skripsi ini, yaitu temperature pada inlet fuel dan wall nozzle, kecepatan inlet fuel, dan ukuran nozzle yang digunakan pada area api. Hasil penilitian ini menghasilkan karakteristik api Dimethyl Ether (DME) yang baik sehingga dapat diaplikasikan dalam penggunaan Dimethyl Ether (DME) nantinya untuk keperluan masyarakat ataupun industri.

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This thesis discusses about renewable energy which will replace one of the energy needed by the community, namely Liquiefied Petroleum Gas (LPG). The renewable energy discussed in this thesis is Dimethyl Ether (DME). This research uses a numerical study analysis through Ansys software which can analyze a fluid, in this case a fire produced from Dimethyl Ether (DME). There are several variables studied in this thesis, namely the temperature at the fuel inlet and nozzle wall, the fuel inlet velocity, and the size of the nozzle used in the fire area. The results of this research produce good fire characteristics of Dimethyl Ether (DME) so that it can be applied in the use of Dimethyl Ether (DME) later for community or industrial purposes."

"ABSTRAKKrisis energi merupakan salah satu permasalahan serius yang dihadapi saat ini. Sumber energy dari bahan bakar fosil semakin menipis sementara pertumbuhan akan kebutuhan energi sendiri semakihn meningkat. Hal ini berkorelasi langsung dengan masalah lingkungan seperti pemanasan global. Hidrogen merupakan salah satu harapan untuk energi masa depan, namun hal itu masih terkendala dalam proses distribusi dan penyimpanannya. Salah satu cara mengatasi kendala tersebut adalah dengan sistem adsorpsi menggunakan CarbonNanotubes. Carbon Nanotube (CNT) merupakan media penyimpan hidrogen yang baik karena memiliki luas permukaan dan volume pori yang besar. Bagaimana meningkatkan kinerja CNT masih sangat menarik untuk diteliti. Banyak faktor yang mempengaruhi CNT dalam melakukan adsorpsi hidrogen, salah satunya adalah chirality dari CNT. Namun penelitian secara eksperimental banyak terkendala dalam hal biaya, maka perlu didukung metoda lain untuk menunjangnya seperti Simulasi Dinamika Molekular.Tulisan ini membahas mengenai pengaruh dari chirality CNT terhadap kemampuan dalam adsorpsi hidrogen yang dilakukan dengan simulasi dinamika molekular.

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ABSTRACTEnergy crisis is one of the serious problem in the last decade. Energysources from fossil fuels are running low while need of energy is extremely increase. This directly correlates with environment issues such as global warming. Hydrogen is one of hope for energy future, but its have some problems with distribution and storage process. One of many solution on adsorption system is using carbon nano tubes. Carbon Nano tubes is a good hydrogen storage media because it has large surface area and pore volume. How to improve the performance of CNT in adsorption is a interesting study. There are some factorthat affect hydrogen adsorption in CNT, one of them is chirality of CNT. However, many experimental studies have some problem in high cost, so it is necessary other methods to solve this problem such as molecular dynamic simulation. This paper discusses about effect of CNT chirality in hydrogen adsorption by molecular dynamic simulation"

"A new, more assertive and confident Russia is emerging from the ashes of the old Soviet Union. Given its huge oil and gas reserves, energy policy could well be instrumental in the future of Russia's foreign policy. Under a strong leadership of President Vladimir Putin, the new Russia is gaining in influence through a series of strategic moves revolving around in geopolitical assets in energy. Developments Flaming of the Russian [gas and oil] pipelines, laid down in t.he Energy Strategy 2003, are all but indicative of how the Plan served both economic and strategic considerations. Westward, the Plan may widen the wedge between the old and new member of NATO and/ or the European Union. Eastward, the Russian may succeed to grasp the olive branch of japan and the Friendship of China. As an equal partner of the West and a nearly-dominant peer of the East, Russia managed well a balance- exchangeable-relation to shift preference from one to the other and, more importantly, to drive squabble inside the crowds. A Eurasian order is about to emerge, with the Russian Federation at the centre~stage."

"Peramalan konsumsi energi memainkan peranan penting dalam pengambilan kebijakan. Peramalan konsumsi energi yang terlalu rendah berpotensi mengganggu aktifitas ekonomi, sedangkan peramalan konsumsi energi yang terlalu tinggi akan mengakibatkan suplai energi yang berlebihan. Tesis ini meramalkan konsumsi energi primer di Indonesia dengan menggunakan metode ARIMA. Tujuannya adalah untuk meramalkan konsumsi energi primer di Indonesia pada tahun 2025 dan melakukan kajian analisis komparatif tentang bauran energi tahun 2025 antara hasil peramalan dengan menggunakan ARIMA dan target pemerintah. Hasil peramalan menunjukkan konsumsi energi primer di Indonesia pada tahun 2025 sebesar 1802 juta SBM dengan komposisi bauran energi terdiri dari minyak bumi sebesar 39 persen, gas sebesar 17 persen, batubara sebesar 41 persen, energi air dan energi baru dan terbarukan (EBT) sebesar 3 persen.

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Forecasting of energy consumption plays an important role in policy making. Underestimation of the energy consumption would lead to potential disrupt economic activity, whereas overestimation of the energy consumption would lead to excessive energy supply. This thesis forecasts the Indonesia's primary energy consumption using ARIMA method. The goal is forecasting the Indonesia?s primary energy consumption in 2025 and conducting a comparative analysis of the energy mix in 2025 between the forecasting results using ARIMA method and government targets. Forecasting results demonstrate Indonesia's primary energy consumption in 2025 amounted to 1802 million BOE with the composition of the energy mix consists of oil by 39 percent, gas by 17 percent, coal by 41 percent, hydropower and renewable energy (RE) by 3 percent."

"The increasing demands on energy supply especially for natural gas and oil in the European Unions has made the bargaining power of Russia and Turkey stronger. Just before the raising oil prices, these country played a small part in the "giant" EU political-economic game. However, things turn to be interesting when Russia turns to act as the game - director using its superiority as the major supplier of EU energy. As well as Russia, Turkey's geopolitical advantage as the new East-West energy corridor, bridging the east energy producer and the west consumer, will become a key player actor for EU energy security supply. This paper will examine the European Union Energy Challenges and its dilemma in securing their energy supply."