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All Journal JURNAL PENDIDIKAN TAMBUSAI International Journal of Innovation in Mechanical Engineering and Advanced Materials Greenation International Journal of Engineering Science Greenation International Journal of Engineering Science
Prumanto, Denny
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Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Analisis Kualitas Supply Pressure Kompresor Gas C-100 Pada Booster Compressor Pltg Mpp 100 MW Prumanto, Denny; Kusuma, Hernandito Rahmat; Ariani, Wiga; Suhita, Delphima
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.11237

Abstract

Pengerjaan pengadaan dan pemasangan Gas Compressor System yang berlokasi di PLTG MPP 100 MW Tarahan Lampung, Sumatera Selatan dilakukan oleh PT. Enviromate Technology International, dengan skema BOT (Built, Operate, and Transfer) selama lima tahun sejak COD (Commercial Operation Date). Feed gas dialirkan dari pipa gas melalui Gas Metering milik PT. PGN (Persero) dengan kondisi operasi tekanan antara 6 ~ 8 barg dan temperatur 30 oC. Kondisi gas yang dibutuhkan masuk ke fasilitas pembangkit utama pada tekanan minimum 540 Psig (37,23 barg) dan suhu antara 40 – 45 oC. Namun dari data operasional, kompresor gas C-100 mengalami penurunan kualitas tekanan suplainya menjadi 34 barg. Ini disebabkan oleh kehausan pada silinder kompresor dan batang piston. Pada perhitungan data operasional, daya kompresor C-100 pada stage 1 turun sebesar 22,005% dan pada stage 2 turun sebesar 7,705% dari spesifikasi awal. Efisiensi kompresor C-100 pada stage 1 turun menjadi 21,405% dan pada stage 2 turun menjadi 7,672% dari spesifikasi awal. Jika kendala pada kompresor C-100 dibiarkan, akan ada risiko kehilangan tekanan yang tinggi. Dengan pentingnya aplikasi booster compressor pada PLTG Tarahan MPP 100 MW, diperlukan stabilitas yang tinggi serta kinerja yang prima dan handal.
Impact of Extended Intervals on Diesel Engine Performance with 15W-40 DH1 Lubricant Oil Suprihatiningsih, Wiwit; Priyanto, Arief; Nurato, Nurato; Chairat, Arief Suardi Nur; Prumanto, Denny
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 6, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v6i2.25014

Abstract

Engine lubricant oil is crucial for minimizing friction between moving components within an engine, directly influencing the engine's reliability and lifespan. Determining the appropriate oil replacement intervals is essential, as extending these intervals necessitates more rigorous monitoring of both oil quality and engine condition. This study investigated the performance of SAKAI 15W-40 DH1 engine oil in the SAKAI Vibrating Roller SV526 over varying operational periods: 125 hours, 250 hours, 375 hours, and 500 hours. The research involved analyzing oil samples for viscosity, metal additives, total base number (TBN), and contaminants using Fourier Transform Infrared Spectroscopy (FTIR). Additionally, key engine performance indicators, including fuel consumption, valve clearance, and compression pressure, were measured. The findings revealed a gradual decrease in oil viscosity from 13.48 cSt to 11.56 cSt, approaching the minimum acceptable threshold of 11.45 cSt. Concurrently, the Fe content in the oil increased to 11 ppm, indicating wear, while the valve clearance in cylinder number three expanded to 0.48 mm, and compression pressure dropped from 31 kg/cm² to 28 kg/cm². Despite these changes, the oil remained within the standard operational limits, and the engine continued to perform adequately. However, based on the observed trends, extending the oil replacement interval to 500 hours cannot be conclusively recommended, as the oil's condition and engine performance may begin to decline beyond this point.
Utilization of Heat Compressor in The Air Conditioning of The Ahu Direct Expantion System for Class 100,000 Cleanroom Rooms Laksono, Agung; Prumanto, Denny; Simbolon, Amri; Komarudin, Komarudin
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.692

Abstract

Currently, the demand for cleanrooms is quite high. With the growth of the food industry, medical equipment, and hospitals, the need for these spaces has become increasingly important. Cleanroom classifications are regulated in various literature, such as ISO, SNI, NFPA, and others. In ISO 14644-1, cleanroom classification is divided into several categories: Class 100,000 (ISO 8), Class 10,000 (ISO 7), Class 1,000 (ISO 6), and Class 100 (ISO 5). The differences between these classifications lie in temperature, humidity, air changes per hour, particle quality, and airflow distribution.To maintain humidity, electric heaters are generally used as equipment. The energy requirement is quite high, and in an AHU system, this device creates an additional heat load because it generates the full sensible load. In this study, the use of a heat compressor or heat recovery unit could be an option for maintaining humidity in a room conditioned by an HVAC system. The flow rate of the high-temperature, high-pressure refrigerant will be regulated using a solenoid valve triggered by a humidity sensor. A defrost mechanism will be implemented within the heat recovery coil to prevent freezing within the system. The results of this study state that the energy required for a cleanroom AHU system that uses heat recovery for air humidity conditioning is more efficient than using an electric heater.
Utilization of Heat Compressor in The Air Conditioning of The Ahu Direct Expantion System for Class 100,000 Cleanroom Rooms Laksono, Agung; Prumanto, Denny; Simbolon, Amri; Komarudin, Komarudin
Greenation International Journal of Engineering Science Vol. 3 No. 4 (2025): (GIJES) Greenation International Journal of Engineering Science (December 2025
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v3i4.692

Abstract

Currently, the demand for cleanrooms is quite high. With the growth of the food industry, medical equipment, and hospitals, the need for these spaces has become increasingly important. Cleanroom classifications are regulated in various literature, such as ISO, SNI, NFPA, and others. In ISO 14644-1, cleanroom classification is divided into several categories: Class 100,000 (ISO 8), Class 10,000 (ISO 7), Class 1,000 (ISO 6), and Class 100 (ISO 5). The differences between these classifications lie in temperature, humidity, air changes per hour, particle quality, and airflow distribution.To maintain humidity, electric heaters are generally used as equipment. The energy requirement is quite high, and in an AHU system, this device creates an additional heat load because it generates the full sensible load. In this study, the use of a heat compressor or heat recovery unit could be an option for maintaining humidity in a room conditioned by an HVAC system. The flow rate of the high-temperature, high-pressure refrigerant will be regulated using a solenoid valve triggered by a humidity sensor. A defrost mechanism will be implemented within the heat recovery coil to prevent freezing within the system. The results of this study state that the energy required for a cleanroom AHU system that uses heat recovery for air humidity conditioning is more efficient than using an electric heater.
Co-Authors Chairat, Arief Suardi Nur Komarudin Komarudin Kusuma, Hernandito Rahmat Laksono, Agung Nurato Nurato, Nurato Priyanto, Arief Simbolon, Amri Suhita, Delphima Wiga Ariani Wiwit Suprihatiningsih