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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
Made Mara, Made
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Aerospace Engineering Automotive Engineering Mechanical Engineering Physics

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PENGARUH VARIASI JUMLAH BLADE TURBIN ANGIN TERHADAP OUTPUT DAYA LISTRIK Wiratama, I Kade; Mara, Made; Mulyanto, Arif; Harianhady, Muliadi
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Some area in Indonesia such as southern part of Sumatra to Nusa Tenggara have big enough wind speed to produce electrical energy by using wind turbine. However, the potential resources are not yet fully developed, and only 1.4 GW electrical energy has been generating in the Indonesia region. Most of the wind energy generating equipment is designed to the European wind speed which is   10 - 30 knot. So, it is very important to modify the such equipment to be able to implement in Indonesia area which is have a lower wind speed.The purpose of this research is to know the influence of number of blades and wind speed to electricity generated by horizontal axis wind turbine with blade taper inversed linear.The result showed that the highest electrical output power was 2,02 watt produced by 5 blades and 3,5 m/s wind speed. The lowest electrical output power was 2,347 watt achieved by using 3 blades and 2,5 m/s wind speed.
PERANCANGAN PIPA PESAT, DAN DAYA KELUARAN PEMBANGKIT LISTRIK TENAGA AIR KOKOK PUTIH DESA BILOK PETUNG KECAMATAN SEMBALUN KABUPATEN LOMBOK TIMUR Mahendra, Berlian; Mara, Made; Padang, Yesung Allo
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Inconsequent of decreasing fossil energy, It is necessary to developing an alternative energy source. One of the alternative energy that can be developing in Indonesia especially at Bilok Petung village, district of Sembalun, East Lombok Regency is water power station.This design is to review power station plan in Koko Putih that will have finished. Inputs in this design are flow rate and head which are available in Koko Putih. From this design, it is obtained that the inside penstock diameter  987 mm and the thickness  penstock in head 286.72 m is 15.15 mm, penstock material is carbon steel with specification ASTM A252 Grade 2. Head effective of Koko Putih water power plan is 249.603 m. Output power of turbine is 3.9 MW and output power of generator is 3,6 MW.
Analisa Kualitas dan Kuantitas Biogas dari Kotoran Ternak Mara, Made; Alit, Ida Bagus
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Our life is completely dependent on a reliable and adequate supply of energy. In other to reduce dependence on fossil fuels, the use of animal dung in producing a renewable alternative source of energy has been proved using cow dung. Concerns over the environment and the rising costs for energy and waste water treatment have caused a resurgence of interest in anaerobic treatment and subsequent use of the biogas produced during this treatment of organic wastes as fuel. Biogas from manure wastes has become a potential renewable energy source for both domestic and commercial usage especially in West Nusa Tenggara. This study aims to investagate the quality and quantity of biogas produced from animal dung. The Cows, buffaloes and horses dung were used in this research using anaerobic biotank proses. The animal dungs were digested in ambient temperature and the water composition of degester was also analysed. The result shows that total volume of biogas produced by horse dung is 577.735 liters, and then cow dung is 373.839 liters, and the smallest production generated by buffalo dung which is 352.975 liters. Moreover, biogas from horse dungs generated the highest power of combustion, followed by cow dung, and buffalo dung, 732,425 watt, 556,521 watt 539,759 watt resfectively.
PENGARUH JUMLAH BLADE DAN VARIASI PANJANG CHORD TERHADAP PERFORMANSI TURBIN ANGIN SUMBU HORIZONTAL (TASH) Wiratama, I Kade; Mara, Made; Furqan Prina, L. Edsona
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 4, No 2 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.319 KB) | DOI: 10.29303/dtm.v4i2.60

Abstract

The willingness of electrical energy is one energy system has a very important role in the economic development of a country's survival. As one energy source (wind) can be converted into electrical energy with the use of a horizontal axis wind turbine. Wind Energy Conversion Systems (WECS) that we know are two wind turbines in general, ie the horizontal axis wind turbine and vertical axis wind turbine is one type of renewable energy use wind as an energy generator. The purpose of this study was to determine the effect of the number of blade and the radius chord of rotation (n), Torque (T), Turbine Power (P), Power Coefficient (CP) and Tip Speed Ratio (λ) generated by the horizontal axis wind turbine with form linear taper. The results show that by at the maximum radius of the chord R3 the number blade 4 is at rotation = 302.700 rpm, Pturbine = 7.765 watt, Torque = 0.245 Nm, λ = 3.168 and Cp = 0.403 or 40.3%.
Pengaruh Konfigurasi Tabung Kompresor Terhadap Unjuk Kerja Pompa Hidram Fane, Didin S.; Sutanto, Rudy; Mara, Made
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

AbstractA hydraulic ram pump is a cyclic water pump powered by hydropower. It functions as a hydraulic transformer that takes in water at one pressure and flow rate, and outputs water at a higher hydraulic head and lower flow rate. Hydraulic ram pump uses the water hammer effect to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started. The hydraulic ram pump is used in remote areas, where there is both a source of low-head hydropower and a need for pumping water to a destination higher in elevation than the source.In this research using tube compressor with 3-inch tube diameter and height 25 centimeters. Level of water used is at position 5 meters with 8 meters height of calculate the output discharge. The observed parameters are input pressure, output pressure, the tube compressors pressure; valves waste pressure, water discharge input, output water flow and pump efficiency.The result showed that hydram pump ILK position, with parallel compressor tube configuration have better performance than the configuration of compressor tube series. Which the maximum head 22 meters is achieved. And discharge result at the height calculated (8 meters) of 0.0453 liters / sec and 3.278% efficiency.
ANALISA KELAYAKAN ETANOL KADAR RENDAH SEBAGAI BAHAN BAKAR PADA KOMPOR BERGRAVITASI Wardi Salim, Ahmad; Mara, Made; Padang, Yesung Allo
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Low grade alcohol  is energy that can be renewed. when compared to kerosene and LPG, bioethanol stove is non explossive, does not require a large pressure and easy to manufacture.This study to determine the effect of the height and length of  heating coil burner water heating time, preparation time and fuel consumption. The principle of low grade of ethanol stove is used the position of the fuel tank height and speed up the process of  evaporation. Variations used in this study is the length of the heating coil burner that is 55 cm, 75 cm, 95cm, and height is given by 1.5 m, 1.75 m, and 2 m.The results indicate that the use water heating fastest time obtained at 2 m height variation with of 95 cm burner heating coil of 790 seconds. At the time of preparation reduction obtained at the optimal height variation of 1.5 mand lenghth 95 cm of burner heating coils is 328 sekonds. The lowest fuel consumption obtained when using length variation burner heating coil 55 cm and a height of 1.5 m  at 0.132 ml/sec.
Analisis Penyerapan Gas Karbondioksida (CO2) Dengan Larutan NaOH Terhadap Kualitas Biogas Kotoran Sapi Mara, Made
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 1 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The rising costs for the fossil fuel based energy and concern over the environment have caused a resurgence of interest in anaerobic treatment and subsequent use of the biogas produced during the treatment of organic waste as fuel.  Biogas from cattle dung has become a potential renewable energy source for both domestic and commercial usage especially in Lombok. Unfortunetly, due to the presence of carbon dioxide (CO2) and Hydrogen sulphide (H2S) in biogas, it has become extremely difficult to store and transport it effectively and has lower energy density.This paper presents the study in biogas purification by mean of absorbing the CO2 gas using the NaOH solution. In addition, the biogas production process used in 3 (three) kinds of cattle dung from horses dung, cows dung and buffaloes dung by the composition of 1 kg of manure to 1 Liter of water.                 The results show that generated the largest volume on the composition of C with average volume reached 72.419 liters, then the composition B reached 61.794 liters, and the lowest in the composition of A with an average volume of 51.478 liters. The highest power generated in the treatment composition A with 2.5 N NaOH solution at 108.5 watts and the lowest power generated by the composition of C without treatment of 25.67 Watts. 
PENGARUH KECEPATAN ANGIN DAN VARIASI JUMLAH SUDU TERHADAP UNJUK KERJA TURBIN ANGIN POROS HORIZONTAL Aryanto, Firman; Mara, Made; Nuarsa, Made
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The wind turbine is a device that converts wind energy into mechanical energy and then converted into electrical energy through a generator. Horizontal axis wind turbines can increase the efficiency to get the maximum power coefficient. One was using the blade numerous. Maximum efisiensi system will increase the number of watts (power) generated so as to obtain a certain number of watts by simply using the number of windmills lessThe object of this research is the performance testing horizontal axis wind turbine with wind speed variation and variation in terms of the number of blade Efisiensi system (???? )  and Tip Speed Ratio (TSR). Research conducted with the wind coming from the source to the Wind Tunnel fan to direct wind. Wind speed is used there are three variations of the 3 m/s, 3.5 m/s, and 4 m/s and varying the amount of blade that is 3, 4, 5 and 6 blade.The results showed that the best ????  values obtained at a maximum wind speed of 4 m / s and the number of blade 5 with a value of 3.07% ????, whereas ???? smallest value obtained at wind speeds of 3 m/s and the number of blade 3 that the value of 0.05% ????. For TSR maximum value at a maximum speed of 4 m/s occurred in the number of blade 5 is equal to λ = 2.11, while the lowest value at wind speeds of 3 m/s resulting in blade number 3 is equal to λ = 1.49.
Co-Authors Ahmad Wardi Salim, Ahmad ARIF KURNIAWAN Arif Mulyanto, Arif Berlian Mahendra, Berlian Didin S. Fane, Didin S. Firman Aryanto, Firman I Kade Wiratama Ida Bagus Alit L. Edsona Furqan Prina, L. Edsona Made Nuarsa, Made Muliadi Harianhady, Muliadi Rudy Sutanto Yesung Allo Padang, Yesung Allo