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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Supriadi
Universitas Tjut Nyak Dhien
Energy Industrial & Manufacturing Engineering Mechanical Engineering

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Analisa Perbandingan Kinerja Boiler Tanpa dan Dengan Menggunakan Glasswoll sebagai Isolator Safri Gunawan; Supriadi; Hendra Susilo; Fadhlah Sinurat
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.7396

Abstract

This study discusses the performance of boiler without and with insulation as a parameter that affects the performance of boiler. The purpose of this study is to compare the performance of boiler without using an insulator and with an insulator. The performance of the boiler is seen from the length of time reaches a boiling temperature at a pressure of 5 bar, the decrease in boiler temperature after reaching a pressure of 5 bar, and the duration of the boiler pressure reaching a pressure of 5 bar. The research method used was 14 liters of water and 4 kg of coconut shell. The first research was carried out without using insulation, furthermore it was continued by isolating the boiler using glasswool with the same conditions. The results obtained in boilers without and with glasswool insulation are very significant. Where the duration of boiling water is up to 41 minutes and 25 minutes, respectively. In addition, the final temperatures after 77 minutes and 118 minutes were 88.4 oC and 145 oC, respectively for boilers without and with insulators. The conclusion in this study states that the insulator greatly affects the performance of the boiler.
Comparative study of octane booster variations in pertalite on exhaust gas emissions of the K15B Engine Supriadi; Wahyu Angga Restu; Fadhlah Sinurat
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 13 No 1 (2026): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v13i1.2027

Abstract

The increasing number of vehicles powered by internal combustion engines in Indonesia has led to a corresponding rise in air pollution. This growing pollution poses significant environmental challenges and directly impacts public health. This study aims to reduce emissions produced by combustion engines, particularly the Suzuki K15B engine, through the application of various octane booster types added to Pertalite fuel (octane rating 90) at concentrations of 0.3%, 0.4%, and 0.5%. Exhaust gas emissions were measured using an Engine Gas Analyzer during the use of both pure Pertalite and Pertalite blended with octane boosters. Each composition was tested three times to ensure data accuracy and reliability. The results revealed that the greatest reduction in carbon monoxide (CO) concentration occurred with a 0.4% addition of Octane Prime, where CO levels decreased from 0.5% to 0.013%. Meanwhile, the most significant reduction in hydrocarbon (HC) emissions was observed with a 0.3% Octane Prime addition, lowering HC levels from 265 ppm to 60.7 ppm. Based on these findings, it can be concluded that the appropriate use of octane boosters in Pertalite fuel effectively reduces exhaust gas emissions from combustion engine vehicles
Co-Authors Fadhlah Sinurat Fadhlah Sinurat Safri Gunawan Susilo, Hendra Wahyu Angga Restu