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All Journal Jurnal Ilmiah Teknik Mesin "MEKANIK" Security Intelligence Terrorism Journal (SITJ)
PASARIBU, NAEK TUA
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Automotive Engineering Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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EFESIENSI KOMPRESOR TERHADAP MODIFIKASI SUSUNAN PIPA EVAPORATOR REFRIGERATOR SIREGAR, BARITA; ESWANTO, ESWANTO; PASARIBU, NAEK TUA
MEKANIK: Jurnal Ilmiah Teknik Mesin Vol 1 No 1 (2015): Mei 2015
Publisher : Jurusan Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Medan (ITM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (893.671 KB)

Abstract

Kompresor dengan pembebanan yang sama dalam keadaan modifikasi ataupun standart sangatlah berbeda efesiensinya dan Coefisien prestasi dalam suatu mesin pendingin,dalam hal ini pengujian dalam keadaan standart lalu modifikasi evaporator berbentuk segitiga tanpa sirip(plat) dan pengujian setelah dimodifikasi sangatlah memperjelas perbedaan efesiensi kompresor yang terjadi dalam suatu sistem pendingin. Dari hasil pengujian kompresor pada Refrigerator merk Samsung model DA99-01516R dengan pembebanan yang sama, nilai efesiensi tertinggi 99,51% dengan Coefisien prestasi 2,58 di dapat pada keadaan standart dan nilai efesiensi tertinggi 98,86 dengan Coefisien prestasi 2,47 dalam keadaan modifikasi susunan pipa evaporator. Sehingga dari hasil pengujian efesiensi kompresor keadaan standart lebih baik dari efesiensi dalam keadaan modifikasi evaporator.
Green Arms Race: Indonesia's Critical Minerals and its Sprint for Renewable Energy Sovereignty Pasaribu, Naek Tua; Tama, Airlangga Aji; Azzari, Muhamad Kevin; Gautama, Ivan
Security Intelligence Terrorism Journal (SITJ) Vol. 2 No. 1 (2025)
Publisher : Pusat Studi Politik dan Kebijakan Strategis Indonesia (POLKASI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70710/sitj.v2i1.30

Abstract

The increasing global demand for renewable energy has pushed countries around the world to compete in acquiring critical minerals and developing green technology. This article aims to examine the policies, regulations, and incentives implemented by the Indonesian government to leverage its vast reserves of critical minerals such as nickel, tin, and rare earth elements. It also aims to compare Indonesia's approach with the strategies employed by major players like China and the United States. The analysis highlights Indonesia's strengths, including its mineral wealth and supportive policies, as well as challenges such as technological readiness and regulatory hurdles. The research aims to provide insights into how Indonesia can enhance its renewable energy capabilities and achieve energy sovereignty while navigating the complex geopolitical landscape by using SWOT and intelligence analysis. The results indicate that the Indonesian government must improve its efforts to maximize its own potential, including by maintaining the availability of mineral resources, establishing robust regulations, and providing incentives for developers in the renewable energy sector. Additionally, it is crucial to promptly address the issues that hinder Indonesia's progress in achieving renewable energy sovereignty, such as updating mineral reserve data, adapting technology and improving human resources, and enhancing oversight to prevent illegal smuggling of mineral resources for renewable energy.
Co-Authors Azzari, Muhamad Kevin Eswanto, Eswanto Gautama, Ivan SIREGAR, BARITA Tama, Airlangga Aji