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All Journal Jurnal Informasi dan Teknologi BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan
Nahan, Vontas Alfenny
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Other

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THE ANALYSIS OF IGNATION TIMING ON THE ENGINE PERFORMANCE OF MATIC MOTORCYCLE USING LPG Nahan, Vontas Alfenny; Hermanto, Sogi
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 2 No. 1 (2014): Journal Balanga Edisi Januari-Juni 2014
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.571 KB)

Abstract

Indonesia’s crude oil production has been declining in recent years resulting in Government of Indonesia (GoI) to import more. This import gave more pressure to the financial problem GoI faced as the fuel price, especially premium, has been subsidized which reduced the GoI capability to support other sector of developments. This is actually the background of this research which is to support the policy of the GoI to encourage the use of alternative fuels, one of those is Liquefied Petroleum Gas (LPG). The method used in this research is a true experiment method to analyze the performance of the matic motorcycle engine by comparing fuel that is consumed between 5? and 10? angle of crankshaft for ignition timing on petrol and LPG with various rpm ranged from2000 to 6000 rpm). The result shows that LPG consumption at 10?- angle is lower than that of 5?. Ignition time at 10?- angle for LPG is also more optimal than that of 5?. It is concluded also that at the rpm 6000 is the most effective for engine to run at 10?- angle for LPG.
A REVIEW ON THE ELECTRICITY SUPPLY POLICYON THE PROVINCE OF CENTRAL KALIMANTAN, INDONESIA Nahan, Vontas Alfenny
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 2 No. 2 (2014): Journal Balanga Edisi Juli-Desember 2014
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.575 KB)

Abstract

Recently, blackouts in Palangka Raya, capital city of Central Kalimantan became more and more often. PT. PLN Palangka Raya branch was always put the blame on the dry season that caused the dam in RiamKanan to have dried resulting in the shutdown of their power engine thus to turn off the electricity supply to every area including Palangka Raya. Endowed with rich natural resources including energy resources such as oil and coal, it is unlikely to see that this region was suffered from lack of power. There must be something wrong in the electricity supply policy from central government in the arrangement of energy. This is one of the reasons why this topic is deemed important as the background of the research. This research aims to find electricity supply policy for Central Kalimantan Province by reviewing the current and future electricity supply policy in order to meet the future electricity demand up to 2025. The current electricity consumptions are calculated based on the historical data and future electricity demand for Central Kalimantan. The methodology used in this research is historical analysis to get the trend of the supply and demand and the review of electricity planning of PT. PLN 2006-2025 in order to meet the future electricity demand. The review on the effect of the coal-fired power plant is also discussed to give readers a clear understanding on the effect of coal-fired power plant on human health in long term. Finally, the objective of this research beside to find electricity supply policy for the Central Kalimantan province, is also to give a clear understanding of the consequences our next generation will face by choosing a certain electricity supply policy reflected in the RUPTL made by PT. PLN. Still this research has many limitations which open further research to give more comprehensive electricity supply for Central Kalimantan such as the more accurate data collecting, method used and time constraint.
Evaluation of Thermal Load and Optimization of Energy Requirements for Air Conditioning Wiyogo, Wiyogo; Jaya, Harie Satiyadi; Nahan, Vontas Alfenny; Siswandi, Galfri; Duling, Jhonni Rentas
Jurnal Informasi dan Teknologi 2024, Vol. 6, No. 4
Publisher : SEULANGA SYSTEM PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60083/jidt.v6i4.597

Abstract

This study evaluates air conditioning systems, focusing on addressing two primary types of heat: sensible and latent heat. Sensible heat, which affects temperature without causing a phase change in the material, is the main contributor to the cooling load and originates from human bodies, electronic equipment, and solar radiation penetrating windows. The study identifies that solar radiation significantly contributes to the heat load, particularly from the North and south sides. Peak heat gain on the north side occurs between 11:00 and 13:00, reaching 285,956 kcal/h, while the south side experiences reduced heat load due to natural shading. Meanwhile, latent heat, which relates to phase changes without a temperature increase, plays a minor role in this context. Heat gain from walls, particularly the east wall in Machine Classroom 1, reaching 5263 kcal/h at midnight, also plays a crucial part. Human activity, with a total of 7920 W or 7.92 kJ/h, and electronic equipment, contributing 32.55 watts or 117.18 kJ/h, add to the overall heat load. The total heat load peaks at midnight, with values around 44.235 kJ/h in Room 1 and 38.972 kJ/h in Room 2. Based on these calculations, the required AC capacity is 42,000 BTU/h for Room 1 and 36,000 BTU/h for Room 2. The capacity conversion shows a need for approximately 12.28 kW for Room 1 and 10.82 kW for Room 2. This study underscores the importance of selecting the appropriate AC capacity based on total heat load calculations involving various factors, especially in tropical regions like Palangka Raya, to ensure efficiency and thermal comfort.
Co-Authors Duling, Jhonni Rentas Galfri Siswandi, Galfri Hermanto, Sogi Wiyogo Wiyogo