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Sulaiman
Institut Teknologi Padang
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Preventive Maintenance Study on H-25 Gas Turbine Sulaiman; Fahmirullah
Jurnal Teknik Mesin Vol 10 No 2 (2020): Jurnal Teknik Mesin Vol.10 No.2 October 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i2.141-144

Abstract

This study aims to determine the effect of the time-based maintenance method preventive maintenance, namely major inspection on the efficiency of H-25 gas turbine. The efficiency calculation method based on operating data from the gas turbine. The effect of major inspection can be seen from the compressor efficiency, turbine efficiency and fuel consumption. The results of calculations before the major inspection are 80% of compressor efficiency, 83% of turbine efficiency, and 0.751 kg/kWh of fuel consumption, while after the major inspection, compressor efficiency is 80%, turbine efficiency is 85% and fuel consumption is 0.740 kg/kWh.
Development of Ejector Cooling System for Vegetables Products Vacuum Cooling Sulaiman; Desmi Asriandi
Jurnal Teknik Mesin Vol 6 No 2 (2016): Jurnal Teknik Mesin Vol.6 No.2 October 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i2.93-98

Abstract

Nowadays, the development of refrigeration technology is more rapidly, the adicted of people to refrigeration system from year to year is always rising,start from the simple scale (eg,refrigerator) in order to safe foods until the big scale such as in industry. The ejector designed will change the capillar tube function or TXV to improve the AC mechine performance. Theoritically,the use of ejector in this research will increase the effect of refrigeration and decrease compression performance. The increasing work of the system will decrease the eletrical energy consumption at the time the air conditioner work. The test in the research is designed in such a manner, so that it can be operated in standard or conventional condition (the system operates normally by using capilar tube) and in the condition of using ejector and doing cooling vacuum. Based on the test by using AC in kind of split with 2 HP Compressor capacity,it is concluded that there has been increasing of COP (Coeficient Of Performance) after using ejector in refrigeration system with vacuum cooling about 1,2 % and also there is retrenchment use of electricity about 0,01 %.
Improved Performance of the Vapor Compression Cooling System Using A Combination of Condensers-Evaporative Cooling Arfidian Rachman; Sulaiman
Jurnal Teknik Mesin Vol 8 No 1 (2018): Jurnal Teknik Mesin Vol.8 No.1 April 2018
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2018.v8.i1.22-26

Abstract

Energy use is a major problem in the vapor compression air cooling system, especially in areas with very hot weather conditions. In hot weather conditions, the performance of the system has decreased dramatically and electricity consumption has increased significantly. Combined Condensor with evaporative cooling will increase the heat removal process by using an evaporative cooling effect that will increase the efficiency of energy use. This paper presents the study of the use of evaporative cooling and condenser. This paper mainly calculated energy consumption in steam compression cooling systems and related problems. From the results of this study, the use of condensers with evaporative cooling, power consumption can be reduced to 46% and performance coefficient (COP) can be increased by about 12%, with 1,2 kW cooling capacity.
Efficiency Analysis of NACA 4412 Semi-Inverse Taper Wind Turbine For Power Plant Sulaiman; Asmara Yanto; Ikhsan Febryan
Jurnal Teknik Mesin Vol 10 No 1 (2020): Jurnal Teknik Mesin Vol.10 No.1 April 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i1.46-52

Abstract

In this work, a horizontal axis wind turbine (HAWT) are designed and tested to determine turbine efficiency. The wind turbine is built with 3 blades of semi-inverse taper type. This blade is a modification of a type of inverse paper blade that is called semi-inverse taper. This blade is made for moderate wind speeds considering wind in Indonesia. To analyze turbine efficiency, it is necessary to do turbine design and turbine testing stages. From the blade design, the blade radius is 0.9 m. Based on the results of testing and analysis of wind turbine efficiency it can be concluded that the input power and output power are higher with increasing wind speed. However, for the same wind speed, the output power is always smaller than the input power. The increase in input power due to an increase in wind speed is greater than the increase in output power to an increase in wind speed, so the efficiency is lower. The highest wind turbine efficiency was obtained at 84.97% at the lowest wind speed of 5.9 m/s. Whereas at the highest wind speed of 9.3 m/s, turbine efficiency is the lowest at 37.05%.
Co-Authors Arfidian Rachman Asmara Yanto Desmi Asriandi Fahmirullah Ikhsan Febryan