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All Journal Rekayasa Mesin Journal of Engineering and Management in Industrial System Indonesian Green Technology Journal Jurnal Rekayasa Mesin Community Development Journal: Jurnal Pengabdian Masyarakat Eksergi: Jurnal Teknik Energi Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Jurnal Pengabdian Masyarakat Bangsa Journal of Mechanical Engineering and Applied Technology Jurnal Polimesin
Ahmad Hamim Su’udy
Politeknik Negeri Semarang
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Analisis Distribusi Temperatur Koefesien Perpindahan Panas pada Sistem Pendingin (Simulasi) Menggunakan Porous Media dengan Variasi Porositas Su'udy, Ahmad Hamim; Siswanto, Eko; Soenoko, Rudy
Indonesian Green Technology Journal Vol. 7 No. 2 (2018)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2018.007.02.04

Abstract

The internal combustion engine is a fairly kece slot old machine and currently has many alternative energy which apparently has not been able to shift the role of the internal combustion engine, for the cooling system in the internal combustion engine greatly affect the performance and if not handled kece slot properly will cause something fatal, ie when the engine is too hot it can cause over heating and the machine can not work anymore. For Cooling system has been using fin and radiator. Research continues to grow in terms of heat transfer, ie by using porous media. Presence of porous media cooling system is expected to replace the role of fin and radiator easier maintenance and able to transfer heat well. In this case the research is assisted by simulation to see the temperature distribution that occurs in porous media with variation of 10%, 15%, 20% 25%, 30% The result of research by using simulation shows that the porosity value of porous media, the temperature distribution value also greater than. then the higher the porosity value the value (h) the heat transfer coefficient will be low. Keywords: Heat Transport, Porosity, Temperature
PENERAPAN TEKNOLOGI MESIN ROASTING DAN PENGERING BIJI KOPI BERBASIS ENERGI SURYA UNTUK PENINGKATAN PRODUKTIVITAS KELOMPOK TANI DI WILAYAH SUMOWONO KABUPATEN SEMARANG Ahmad Hamim Su’udy; Wiwik P Widyaningsih; Bah Evan; Budi Prasetyo; Dianisa Khoirum Sandi
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 7 No. 3 (2026): Vol. 7 No. 3 (2026)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v7i3.60162

Abstract

Kelompok tani dan UMKM kopi di Indonesia masih menghadapi keterbatasan dalam proses pascapanen, terutama pada tahap pengeringan dan penyangraian yang sebagian besar dilakukan secara manual dan sangat dipengaruhi kondisi cuaca. Kegiatan pengabdian kepada masyarakat ini bertujuan menerapkan teknologi mesin roasting dan mesin pengering berbasis Pembangkit Listrik Tenaga Surya (PLTS) sebagai solusi peningkatan efisiensi, mutu, dan kemandirian energi pada kelompok tani. Perancangan peralatan mengacu pada dokumen proposal teknis mesin roasting (2024) dan desain sistem PLTS pengering kopi (2024), diikuti proses fabrikasi, instalasi, pelatihan operasional, serta serah terima alat kepada kelompok tani. Hasil implementasi menunjukkan bahwa sistem PLTS mampu mensuplai daya sebesar 13–24 Watt dengan efisiensi 50–65%, serta mendukung waktu pengeringan biji kopi 30–60 menit. Mesin roasting memberikan kestabilan suhu dan profil sangrai yang lebih konsisten dibanding metode manual. Evaluasi pascaintervensi memperlihatkan peningkatan efisiensi waktu produksi sebesar 40–55% dan pengurangan biaya energi hingga 60%. Kegiatan ini membuktikan bahwa teknologi tepat guna berbasis energi terbarukan berpotensi meningkatkan produktivitas dan daya saing kelompok tani kopi.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Hamid Adi Chandra Wijaya Ahmad Mamba'udin Aminuyati Arif Rochman Fachrudin, Arif Rochman Astuti, Fina Andika Frida Atikah Ayu Janitra Aulia, Nur Fatowil Bah Evan BAKTIYAR MEI HERMAWAN Budhi Prasetiyo Budhi Prasetyo Budi Prasetyo Dianisa Khoirum Sandi Dwi Purnomo Eko Siswanto Eko Siswanto F Gatot Sumarno, F Gatot Farika Tono Putri Fina Andika Frida Astuti Gutomo Gutomo H, Yusuf Dewantoro Hermawan, Baktiyar Mei Khoryanton, Ampala Margana Margana Mariani, Dina Mochammad Denny Surindra Muhammad Showi Nailul Ulum Nailul Ulum, Muhammad Showi Nanang Apriandi Nur Fatowil Aulia Prasetyo, Nanang Budi Ribka Stephani Rudy Soenoko Rudy Soenoko Rudy Soenoko Safarudin”¬, ”ªYanuar Mahfudz Sai'in, Ali Slamet Priyoatmojo Slamet Priyoatmojo, Slamet Sugeng Irianto Supriyo Supriyo Surindra”¬, ”ªMochamad Denny Surya Aditama Sutanto, Bayu Suwarti Suwarti W, wiwik Purwati Wahyono Wahyono Wahyu Isti Nugroho Wiwik P Widyaningsih Wiwik Purwati Widyaningsih Yanuar Mahfudz Safarudin Yusuf Dewantoro Herlambang