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All Journal Jurnal Nasional Pengelolaan Energi MigasZoom Interdisciplinary Social Studies
Fahlevi, Oktasio
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Environmental Science Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences

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A Analisis Termodinamika Pemanfaatan Fluida Brine Panas Bumi Menggunakan Siklus Rankine Organik 125 kW: THE ANALYSIS OF THERMODYNAMICS GEOTHERMAL BRINE FLUID USING ORGANIC RANKINE CYCLE 125 KW Fahlevi, Oktasio
Jurnal Nasional Pengelolaan Energi MigasZoom Vol. 5 No. 2 (2023): Jurnal Nasional Pengelolaan Energi MigasZoom
Publisher : Pusat Pengembangan Sumber Daya Manusia Minyak dan Gas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37525/mz/2023-2/544

Abstract

Salah satu output dari Pembangkit Listrik Tenaga Panas Bumi yang karakteristik reservoirnya dominasi cair adalah fluida brine yang akan diinjeksi lagi menuju reservoir. Namun temperature fluida brine masih cukup tinggi dan dapat digunakan sebagai sumber panas pada sistem SRO / siklus rankine organik. Disamping itu, fluida brine mempunyai kandungan silika yang dapat mempengaruhi proses scaling sehingga penurunan temperature fluida brine haruslah dijaga agara tidak terjadi proses scaling. GE Clean Cycle 125 kW merupakan teknologi yang dapat digunakan untuk pemanfaatan waste heat recovery fluida brine. Pada fluida brine, temperature masuk evaporator pada sistem siklus rankine organic sebesar 150°C dengan laju massa alir 63 kg/s, akan keluar melalui pre heater sebesar146,39°C. Sedangkan Fluida kerja R-245fa mempunyai laju massa alir sebesar 4,3 kg/s bekerja secara sistem tertutup. Potensi energi termal yang dapat diberikan ke dalam sistem SRO sebesar 138,26 kW dengan  temperature reservoir 250°C dan net efisiensi sistem SRO GE Clean cycle 125 kW dapat menghasilkan 11,65%.
Harvesting Energy Saving Through Energy Audit : A Case Study of Local Government Building in Jakarta Fahlevi, Oktasio; Simarmata, Todo Hotma T; Hadiyanto, Didik
Jurnal Nasional Pengelolaan Energi MigasZoom Vol. 6 No. 2 (2024): Jurnal Nasional Pengelolaan Energi MigasZoom
Publisher : Pusat Pengembangan Sumber Daya Manusia Minyak dan Gas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37525/mz/2024-2/701

Abstract

Electrical energy is a very important requirement to support regional government office activities. Excessive energy use can certainly cause energy waste, so to prevent excessive energy use it is necessary to take energy efficiency measurement. Energy Audit is the one method to measure how efficient the energy usage. Based on SNI ISO 50002 : 2018 regarding energy audit guidance, We conduct the energy audit at the one of local government building in Jakarta City. In doing so, the scope and objective of this energy audit project are to review and evaluate the energy consumption 3 years ago particular for electric, cooling and lighting system saving opportunities. The result from this project are the Enpi's value are 184 kWh/m2 per year. it can be indicated that the building inefficient in energy usage. The Power Quality Analyzer showing inefficient from electrical system because the cosh phi value is 0,75 and automatically get the penalty from PLN. The lighting system still in non LED technology. The Cooling system need improvement to make the energy consumption more efficient. There is a Solar pV rooftop potential installation  that could give the contribution in energy saving around 134.963 kWh/Year. All of summary and recommendation that can be proposed in energy saving potential is 244.169 kWh/Year or 53% cost energy saving from existing cost energy consumption.
Fostering Energy Saving Potential Through Preliminary Energy Audit in Fuel Terminal: A Case Study Fahlevi, Oktasio; Simarmata, Todo Hotma T; Maulana, Ginanjar Indra
Interdisciplinary Social Studies Vol. 5 No. 2 (2026): Interdisciplinary Social Studies
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/iss.v5i2.1044

Abstract

The energy audit is a method for analyzing energy use patterns in a facility and identifying potential efficiency improvement opportunities. In this study, level 2 of the energy audit was conducted at one of Indonesia's fuel terminals. The energy performance indicator (ENPI) was calculated over three years. The ENPI of the fuel terminal increased from 2022 to 2024, indicating that energy consumption per unit of production (kL) rose year by year. The increase from 2022 to 2023 was 27%, while that from 2023 to 2024 was 14%. A higher ENPI value indicates greater energy consumption to produce each kiloliter of product. The implementation of energy conservation opportunities is expected to reduce energy consumption by an average of 5–10% per month, equivalent to approximately 35,784–48,585 kWh per month, and can also reduce CO? emissions by 298.14 TonCO?Eq using an emission factor of 0.83. In order to implement an energy management system, the organization must establish a supporting system, particularly an energy policy that defines the company’s general energy-related policies.
Co-Authors Hadiyanto, Didik Maulana, Ginanjar Indra Simarmata, Todo Hotma T