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All Journal Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Journal of Engineering and Technological Sciences
Dani Yuniawan
Universitas Merdeka Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Electrical & Electronics Engineering Law, Crime, Criminology & Criminal Justice Nursing

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Pengembangan Hilirisasi Produk dan Limbah Melon Berbasis Circular Business Model Andik Pratama; Dani Yuniawan; Lutfi Asnan Qodri; Riska Aprilia
Abdimas Galuh Vol 8, No 1 (2026): Maret 2026
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v8i1.21174

Abstract

Program pengabdian masyarakat ini dilaksanakan bersama Poktan Madukismo 1 dengan tujuan meningkatkan kapasitas mitra dalam pengelolaan limbah pertanian, diversifikasi produk pascapanen, dan pemanfaatan pemasaran digital. Kegiatan menggunakan pendekatan Appreciative Inquiry yang berfokus pada penggalian potensi lokal dan mendorong keterlibatan aktif masyarakat. Hasil kegiatan menunjukkan bahwa pemanfaatan limbah pertanian menjadi kompos padat dan cair mampu mengurangi pencemaran lingkungan sekaligus meningkatkan kesuburan lahan. Diversifikasi produk berupa olahan melon kering membuka peluang usaha baru meskipun masih memerlukan penyempurnaan kualitas, sedangkan pengembangan pemasaran digital melalui pembentukan akun bisnis dan brand “Melon Madukismo” menjadi langkah awal transformasi promosi produk desa. Secara keseluruhan, program ini berhasil meningkatkan keterampilan teknis, menumbuhkan kesadaran kolektif, serta mendorong pola pikir masyarakat menuju kemandirian dan keberlanjutan pembangunan desa. Untuk menjamin keberlanjutan, direkomendasikan penguatan kelembagaan lokal melalui kerja sama dengan BUMDes atau koperasi, peningkatan mutu produk dan kemasan, optimalisasi strategi pemasaran digital, serta sistem perawatan alat yang terencana.
Stochastic–dynamic Modelling of Performance Degradation in a Grid-connected Rooftop Photovoltaic System Dani Yuniawan; Vetty Kartikasari; Rahman Arifuddin; Effendi Mohamad
Journal of Engineering and Technological Sciences Vol. 58 No. 6 (2026): Vol. 58 No. 6(2026): December
Publisher : Directorate for Research and Innovation, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2026.58.6.7

Abstract

This study investigates the effects of climatic variability and long-term module degradation on the technical performance of a 100-kWp grid-connected rooftop photovoltaic system installed on a university campus in a humid tropical climate. A 65-month observational dataset covering January 2020 to May 2025 was combined with 10,000 Monte Carlo iterations and a dynamic feedback model to estimate energy yield, performance ratio (PR), and performance degradation over a 25-year operating period. The simulated annual energy yield ranged from 111 to 129 MWh yr⁻¹ (P10–P90), with a median specific yield of approximately 1,200 kWh kWp⁻¹ yr⁻¹, while the PR remained within 0.75–0.80. A literature-informed two-stage degradation scenario—0.55% yr⁻¹ during Years 1–10 and 1.00% yr⁻¹ during Years 11–25—resulted in an estimated cumulative energy loss of 8.7% relative to the no-degradation baseline. Sobol sensitivity analysis identified the PR residual as the dominant contributor to annual energy-yield variance, followed by irradiance, temperature, and degradation. By preserving irradiance–temperature dependence through paired bootstrap resampling and incorporating time-dependent degradation, the proposed framework provides a more realistic representation of both short-term uncertainty and long-term performance decline. Applications to other humid tropical locations require site-specific inputs and independent validation.
Co-Authors Andik Pratama Effendi Mohamad Lutfi Asnan Qodri Rahman Arifuddin Riska Aprilia Vetty Kartikasari