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I Made Adi Sayoga
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PENGARUH VARIASI LETAK SIRIP BERONGGA PADA ALAT DISTILASI SURYA TERHADAP HASIL AIR TAWAR M. Mirmanto; I Made Adi Sayoga; Patar Dayu Guna
Energy, Materials and Product Design Vol. 1 No. 1 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin dan Industri, Fakultas Teknik, Universitas Mataram

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Abstract

For humans, clean water is a basic need in life. All life activities require water such as for bathing, cooking, washing and drinking. As time goes by and the world's population increases, the supply of clean water is decreasing. Some areas in the southern coast of Java, West Nusa Tenggara and East Nusa Tenggara often experience difficulties in obtaining clean water which is repeated every dry season arrives. The purpose of this study was to determine the effect of variations in the location of the hollow fins on the amount of fresh water produced. The data generated is the quantity of fresh water, the intensity of the sun, the speed of the wind around the distillation apparatus, the temperature of the water in the distillation apparatus. Varied are absorbers with flat plates, sleeping fins and standing fins. The research results show that standing fin absorbers produce the fresh water. On the first day, the mass of fresh water was 1.092 kg. On the second day, the fresh water obtained was 1.045 kg and on the third day, the fresh water obtained was 0.798 kg.
STUDY PENGEREMEN PADA MOBIL LISTRIK HASIL MODIFIKASI A.A. Alit Triadi; Achmad Zainuri; I Made Suartika; I Made Adi Sayoga; I Made Mara; I Dewa Ketut Okariawan
Energy, Materials and Product Design Vol. 3 No. 1 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin dan Industri, Fakultas Teknik, Universitas Mataram

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Every three accidents occur every hour in Indonesia, according to the Director of Road Traffic at the Ministry of Land Transportation, with a percentage of over 50-70 percent and 30 percent of accidents occur due to poor performance of the brake system. Accidents occur due to insufficient braking distance and lack of understanding of the braking characteristics of the vehicle being driven. The aim of this research is to analyze the distance, time and braking force required for an electric car to move until it stops with variations in speed and vehicle load. This research was carried out using an experimental method where a prototype electric car was run by varying the speed and load of the vehicle to obtain braking time and distance and analyzing the data obtained. The shortest braking distance at a speed of 20 km/hour with a vehicle load of 950 kg is 4.39 meters. The longest braking distance is 14.78 meters at a speed of 40 km/hour with a vehicle load of 1050kg. The fastest braking time is at a speed of 20 km/hour with a vehicle load of 950 kg, namely 1.97 seconds. The longest braking time was at a speed of 40 km/h with a vehicle load of 1050 kg, namely 2.76 seconds. The smallest braking force is at a speed of 20 km/hour with a vehicle load of 1050 kg, namely 2098.36 N. The largest braking force is at a speed of 40 km/hour with a vehicle load of 950 kg, namely 4132.65 N.
EVALUASI KINERJA TERMAL UNJUK KERJA KOMPOR BERBAHAN BAKAR OLI BEKAS: THERMAL PERFORMANCE EVALUATION OF USED OIL-FUELED STOVES I Made Mara; I Made Adi Sayoga; I Made Nuarsa
Energy, Materials and Product Design Vol. 4 No. 2 (2025): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin dan Industri, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/b0ks5a25

Abstract

The use of used cooking oil and waste oil as fuel—particularly for cooking—is becoming increasingly common among the public in Indonesia. While this practice offers economic advantages, improper management of used oil can lead to environmental problems such as air and soil pollution. To address this issue, alternative methods for processing used oil are needed to minimize its negative impact. One such method is the use of a used oil stove, which utilizes waste oil as fuel. This not only reduces the amount of oil discarded but also provides a cost-effective substitute for more expensive fuels like gas or kerosene. The purpose of this study was to examine the effect of varying air flow velocities on flame temperature, flame color, and the time required to heat water using used oil as fuel in a stove. The stove was tested under different air flow conditions, and flame temperature and color were observed in three stages. Additionally, the time taken to heat water to approximately 90 °C was recorded. At the lowest air flow rate of 15 m/s, the flame temperature reached 251.5 °C, and the water heating time was 187 seconds. At the highest air flow velocity of 29 m/s, the flame temperature increased to 273.7 °C. These results indicate that higher air flow velocity lead to increased flame temperatures and improved heating efficiency, suggesting that optimizing air flow in used oil stoves can enhance their performance while supporting more sustainable fuel practices.
Co-Authors A.A. Alit Triadi Achmad Zainuri I Made Mara I Made Nuarsa I Made Suartika I.D.K. Okariawan M. Mirmanto, M. Patar Dayu Guna