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All Journal International Journal of Electrical and Computer Engineering International Journal of Renewable Energy Development Rotasi Jurnal Teknologi Reaktor Nuklir Tri Dasa Mega JURNAL TEKNIK MESIN ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Briliant: Jurnal Riset dan Konseptual Mesin Jurnal Elemen Mechanical Engineering for Society and Industry Journal of Mechanical Design and Testing (JMDT) Eksergi: Jurnal Teknik Energi METAL : Jurnal Sistem Mekanik dan Termal Eduvest - Journal of Universal Studies Jurnal Profesi Insinyur Indonesia Advance Sustainable Science, Engineering and Technology (ASSET)
Berkah Fajar Tamtomo kiono
Jurusan Teknik Mesin Fakultas Teknik Universitas Diponegoro
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Neuroscience Social Sciences Transportation

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Journal : Advance Sustainable Science, Engineering and Technology (ASSET)

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Synthesis of Silica Gel From Rice Husk Ash for Sustainable Air Conditioning Requirements Syahbardia; Berkah Fajar Tamtomo Kiono; Sonny Handojo Winoto; Mohamad Said Kartono Tony Suryo; Dedi Lazuardi
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.1944

Abstract

An increase in air conditioning demand, driven by global warming and the need for comfort, highlights the importance of energy-efficient systems like desiccant cooling. This research explores using rice husk ash (RHA), an agricultural waste product from Indonesia, to synthesize silica gel for these systems. The study involved synthesizing silica gel from RHA through chemical processes and comparing its sorption capacity to commercial silica gel. Two synthesis methods were tested: a direct reaction of water glass with acid compounds and an impregnation process on honeycomb walls. The results indicate that the direct reaction method produces a silica gel with better pore performance. Ultimately, the study found that RHA from West Java, Indonesia, is a viable raw material for desiccant air conditioning, although its sorption capacity is slightly lower than that of commercial silica gel. This offers a valuable use for agricultural waste.
Optimization of Off-Grid Solar Lighting Systems Using OEMOF Integrated with IoT Field Data — Case Study: Bukit Kunci, Indonesia Herraprastanti, Eva Hertnacahyani; Kiono, Berkah Fajar Tamtomo; Haryanto, Ismoyo; Muchammad, Muchammad; Korai, Muhammad Safar
Advance Sustainable Science Engineering and Technology Vol. 8 No. 1 (2026): November - January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i1.2672

Abstract

The growing need for efficient night lighting in natural tourist destinations highlights the importance of reliable and sustainable energy solutions. This study analyzes the optimization of solar-based lighting at Bukit Kunci, Indonesia, using the Open Energy Modelling Framework (OEMOF) combined with real-time monitoring via the IoT ThingSpeak platform. Photovoltaic (PV) panel data recorded at 15-second intervals during February–July 2025, yielding 532,520 records, were cleaned and aggregated as input to model the interaction of PV, batteries, LED lights, inverters, and backup generators, to minimize lifecycle cost and energy loss. Results indicate that the current PV capacity (0.4 kWp) supplies less than 50% of lighting demand, with a high levelized cost of energy (≈9.2 USD/kWh) and low reliability (self-sufficiency 3–22%). Optimization through capacity expansion (≈224 modules, ≈1.25 kWh storage) eliminated load loss probability and reduced LCOE to ≈0.05 USD/kWh. This approach demonstrates OEMOF’s potential to enhance system efficiency, ensure reliable night lighting, and support eco-tourism while offering replicability for rural destinations.
Co-Authors . Widayat Ahluriza, Pradipta Arief Marwanto Dedi Lazuardi Drajat Indah Mawarni Eka Darmana Eka Darmana, Eka Emara, Haura Endang Achdi Eva Hertnacahyani Herraprastansi Facta, Mochammmad Fahmi, Heydar Nur Ferdyson, Ferdyson Giarno Giarno Hatmoko, Sumantri Ismoyo Haryanto Iwan Setiawan Khoiri Rozi Khoiri Rozi Korai, Muhammad Safar Kusnandar Kusnandar Kusuma, Mukhsinun Hadi M. Djaeni M. Rasyid M.S.K Tony Suryo Utomo Marcelinus Christwardana Mohamad Said Kartono Tony Suryo Muchammad Muchammad Muhammad Yunus Murni Murni Nanang Apriandi Pambudi, Yoyok Dwi Setyo Prakoso, Satrio Budi Pramesywari, Afifa Putra, Alam Eka Rahmansyah, Adam Restiawan, Muhammad Mika Ramadhani Sofia Loren Butarbutar, Sofia Loren Sonny Hady Winoto Sonny Handojo Winoto Sony, Severianus Sudargana Sudargana Sukarno Budi Utomo Sutaryo Sutaryo Syahbardia Syaiful - Syaiful - Tony Suryo Utomo Utomo, Mohamad Said Kartono Tony Suryo Winoto, Sonny Handojo Wirza, Alif Rahman Yudhy Kurniawan