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All Journal Jurnal Edukasi Elektro JDE (Journal of Developing Economies) JTT (Jurnal Teknologi Terapan) Kinetika Journal of Energy and Electrical Engineering (JEEE) Quantum Teknika AMMA : Jurnal Pengabdian Masyarakat Indonesian Journal of Applied Mathematics TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Naimah, Khoirun
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Other

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Financial Analysis of Green Petroleum Coke as A Coal Blend in Steel Industry to Support National Energy Security Naimah, Khoirun; Sasongko, Nugroho Adi; Widayatno, Rudy Laksmono
Journal of Developing Economies Vol. 6 No. 2 (2021)
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jde.v6i2.24825

Abstract

Green Petroleum Coke (GPC), produced by Pertamina RU II Dumai, is the product of refined petroleum, which still has good quality but has not been utilized to its full potential. Such as Sulfur 0.5%; FC 86.03%; Ash 0.10%; VM 13.82%; Moist 10, 52%; and the calorific value of 7500 kcal/kg. Therefore, one effort that can do is diversification, namely the use of GPC as a mixture of other fuels (fossil) to increase the selling value of GPC. This diversification is also in line with the national energy policy in PP. 79/2014 that the program aims to increase the availability of national energy sources. This study aims to determine the feasibility of using GPC as a coal mixture in Industry (Krakatau Steel) with an overview of economic aspects. Data obtained by qualitative methods consisting of interviews, observation, and documentation. Based on the research results from 2 scenarios, both scenario 1 (GPC 4%) and scenario 2 (GPC 18%), it is found that the NPV is positive, IRR is above the discount rate, and BCR> 1. Thus, the use of GPC as a coal mixture is considered feasible to run and can support national energy security. Keywords: Diversification, Feasibility, Petroleum Coke, Investment DecisionJEL: G11, G32
Analysis of Electrical Energy Consumption in Office Buildings of the Institute Technology of Sumatra in Energy Conservation and Efficiency Efforts Naimah, Khoirun; Arirohman, Ilham Dwi; Zen, Muhammad Rizky; Wicaksono, Rihardian Maulana; Soelami, F.X. Nugroho; Rahmatullah, Abri; Purba, Leonardo D.; Gaol, Javeni Eysama L.
Jurnal Edukasi Elektro Vol. 7 No. 2 (2023): Jurnal Edukasi Elektro, Volume 7, Nomor 2, 2023
Publisher : DPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v7i2.65003

Abstract

Electrical energy is one of the basic human needs in carrying out various activities or daily activities, especially in office buildings such as office buildings of state higher education institutions, namely the Sumatra Institute of Technology (ITERA). Office buildings are the third highest consumer of electrical energy after shopping centers and hotels. The high demand for electrical energy requires the user sector to make efficiency in energy use. Before making efficiency, it is necessary to know the profile of electrical energy consumption including energy consumption intensity (ECI) and significant energy users. Therefore, in this study, an analysis of electrical energy consumption in each ITERA office building was carried out, through observation and interviews according to SNI / ISO 50002: 2018 energy audit procedures. The results obtained show that the total energy use of the 6 largest buildings (A, B, C, D, E, and F) in May 2023 is 144768 kWh and from the calculation of the ECI value is in the very efficient category (7.44 kWh/m2/month). From 6 existing buildings, there are 3 buildings that are very efficient, 1 building is efficient, and 2 buildings are quite efficient. Then, significant energy users were found by 83% in building C AC. Recommendations for saving energy in the effort of energy conservation and efficiency that can be done include, making changes in habits / patterns of use of electrical energy user equipment, especially in air conditioners and dispensers, so as to save electricity 2-21%, and retrofitting refrigerant AC types of split ducts and cassettes that still use R-22 with MC-22 which can save electricity 15-25%.
Co-Authors Arirohman, Ilham Dwi Arminda, Wenny Dwi Saputra, Agung Gaol, Javeni Eysama L. Hariyanto, Duwi Hasbiyalloh, Hasbiyalloh Inayati, Dyah Fitri Irawan Rusnadi Kamaruddin, Maqbul Kusuma, Alfajar Puja Madi, Madi Maulana Wicaksono, Rihardian Muhammad Syaukani Muhammad, Ghaffar Nugroho Sasongko Jati, Nugroho Sasongko Purba, Leonardo D. Rafi, Risfihan Rahmadi, Isnaini Rahmatullah, Abri Ridho Hilman, Muhammad Rinaldi Ikhram Rizky Zen, Muhammad Sabar Sabar Soelami, F.X. Nugroho Wicaksono, Rihardian Maulana Widayatno, Rudy Laksmono Yunesti, Putty Zen, Muhammad Rizky