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All Journal JMPM (Jurnal Material dan Proses Manufaktur) Indonesian Journal of Energy Jurnal Nasional Pengelolaan Energi MigasZoom Swara Patra : Majalah Ilmiah PPSDM Migas Law Development Journal International Journal of Renewable Energy Development
Mukhamad Faeshol Umam
Pusat Pengembangan Sumber Daya Manusia Minyak Dan Gas Bumi
Humanities Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Mechanical Engineering

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Performance analysis of flow channel collector for photovoltaic thermal system Umam, Mukhamad Faeshol; Hasanuzzaman, Md.; Selvaraj, Jeyraj
International Journal of Renewable Energy Development Vol 15, No 2 (2026): March 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61856

Abstract

Solar energy has seen the most significant development in the past decade. Electricity and hot water production are the two most common uses of solar energy. A photovoltaic (PV) system is a popular method for generating electricity from solar energy. However, PV systems are known for their low efficiency, which reduces further as the PV cell temperature rises. The photovoltaic-thermal (PVT) system combines a PV system with a thermal collector to provide dual benefits, namely power generation and hot water production. However, PVT system research often employs a constant flow (CF) strategy in which water is continually cycled throughout the experiment, making it inapplicable. In comparison, the constant collection temperature (CCT) scheme is a more feasible approach, but its impact on PVT system performance has received less attention. This study compares a flow channel PVT system using both CF and CCT strategies. The results show that the CF scheme achieved a higher maximum thermal efficiency of 35.05%, while the CCT scheme reached 17.89%. The CCT method can also maintain the optimum water temperature despite changing radiation circumstances. The PVT system outperforms traditional PV panels regarding electricity efficiency, with a maximum improvement of 0.89% and 0.96% utilizing the CF and CCT schemes, respectively. These results show that PVT systems with CCT schemes that use less energy for pumping outperform PV panels in terms of power production and electricity efficiency.
A Case Study of Risk-Based Inspection Implementation in Diesel Fuel Distribution Pipelines Patria, Mochamad Febrian Adhi; Umam, Mukhamad Faeshol; Krisdiyanto
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 2 (2024): December
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i2.25689

Abstract

Distribution pipes play an important role in the oil and gas industry, allowing fluids such as crude oil, natural gas, and processed products to move. X Company, an oil and gas company, uses these pipelines to transport diesel fuel from the refinery unit to storage tanks. Proper inspection and maintenance of this pipeline is critical to avoiding issues such as corrosion, cracking, and material failure, which can jeopardize safety, finances, the environment, social stability, legal compliance, and business continuity. This study evaluates a risk-based inspection methodology for ten thickness measurement locations on diesel fuel distribution pipelines using the API 581 standard. The procedure includes a literature review, data collection, assessment of remaining life, calculation of the probability and consequence of failure, risk profiling, and the development of an inspection plan. The results indicate that the pipelines have an average remaining life of 13.14 years. Nine thickness measurement locations were classified as 1C and one as 2C, placing them in the medium-risk category. Every three years, a re-inspection plan is proposed that includes both a 100% visual inspection and targeted non-destructive testing using ultrasonic thickness readings. This study demonstrates how risk-based inspection concepts can be used in practice to improve pipeline integrity inspection procedures. The findings include practical recommendations for increasing safety and operational reliability while reducing inspection costs and risks associated with diesel fuel distribution pipelines.
Co-Authors Affandi , Dani Maulana Akhmad Khisni Al Asy’ari, Muhammad Rizqi Amrullah Farad Sunaryo Anwar Setiya Anugrah Daniel W Adityatama Daniel Wihelmus Adityatama Dorman P Purba Dorman Purba Fadel Aji Firmansyah Fajar Muhammad Yakut Farhan Muhammad Ferry Purwo Saputro Hasanuzzaman, Md. Krisdiyanto Kurniawan, Hanifah Dwi Muhammad Rizqi Al Asy’ari Nugraha, Deva Harry Patria, Mochamad Febrian Adhi Purwo Saputro, Ferry Raka Ade Ilhamsyah Ramadani, Havid Pandu Rizaldy, Nicholas Sandhika Putra Pratama Selia, Sesi Selvaraj, Jeyraj Sesi Selia Sunaryo, Amrullah Farad Umi Yuliatin Wahyu Hayatullah Yoeswono