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Application of Particle Swarm Optimization in Duty Cycle Adjustment for Optimization of Oxyhydrogen Generator Pertiwi, Fungky Dyan; Anindito, Dhimas Cahyo; Habibi, Ilham; Kusumadewi, Tri Vicca; Setiyo, Muji; Kolakoti, Aditya
ASEAN Journal of Science and Engineering Vol 4, No 2 (2024): AJSE: September 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i2.70509

Abstract

The duty cycle of pulse width modulation is used to adjust the current of the oxyhydrogen generator with on-off square signals. These signals are essential for an oxyhydrogen gas generator to reduce thermal operation, improve the quality of oxyhydrogen gas, and enhance efficiency. A framework combining particle swarm optimization and regression analysis was proposed to determine the minimum temperature and production time of oxyhydrogen gas while maximizing efficiency using a single input, the duty cycle. The optimization results indicated that the duty cycle for the optimum solution remained within the upper and lower temperature boundaries. In this study, particle swarm optimization successfully provided valuable insights for practical applications in renewable energy technologies.
Vapor compression refrigeration system with air and water cooled condenser: Analysis of thermodynamic behavior and energy efficiency ratio Setiyo, Muji; Rusdjijati, Retno; Habibi, Ilham; Rochman, Muhamad Latifur; Purnomo, Bagiyo Condro; Pertiwi, Fungky Dyan; Waluyo, Budi; Ismail, Rifky; Kolakoti, Aditya
Teknomekanik Vol. 7 No. 2 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i2.31972

Abstract

This study presents the analysis of thermodynamic behavior and energy efficiency of a vapor compression refrigeration system with two types of condensers: air-cooled (ACC) and water-cooled (WCC). The main objective is to assess the system performance by comparing the Coefficient of Performance (COP) and Energy Efficiency Ratio (EER) under both condenser configurations. During a 12-hour test period, data on refrigerant pressure, temperature, and electrical energy consumption were collected and analyzed. The results show that the WCC system outperforms the ACC system, showing a 5.7% increase in heat rejection and a 4.2% increase in cooling capacity. In addition, the WCC system exhibits a lower compressor duty cycle and consumes less electrical energy, resulting in a higher total EER of 5.658 compared to ACC of 1.945. These findings suggest that integrating a water-cooled condenser into a refrigeration system can significantly improve energy efficiency and reduce operating costs, making it a viable option for commercial applications in tropical regions.
Peningkatan Daya Saing Usaha Mikro melalui Pendampingan Legalitas Usaha: Sertifikasi Halal, PIRT, dan Pendaftaran Merek Murniningsih, Rochiyati; Rusdjijati, Retno; Khikmah, Siti Noor; Raliby, Oesman; Hakim, Hary Abdul; Pertiwi, Fungky Dyan
Borobudur Journal on Legal Services Vol 5 No 2 (2024): Vol 5 No 2 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/bjls.v5i2.12874

Abstract

Legalitas usaha merupakan aspek penting yang menjadi dasar keberlanjutan dan pengembangan usaha mikro, terutama di sektor industri rumah tangga (IRT-UM). Pengabdian ini bertujuan untuk meningkatkan pemahaman dan kemampuan pelaku IRT-UM dalam mengurus legalitas usaha, seperti sertifikasi halal, izin PIRT (Pangan Industri Rumah Tangga), dan pendaftaran merek dagang. Kegiatan dilaksanakan oleh tim dari Universitas Muhammadiyah Magelang (UNIMMA), bekerja sama dengan beberapa mitra usaha di wilayah Magelang, yaitu Salsa Catering & Snack, Rindu Snack, dan Rizquna Snack. Metode yang digunakan meliputi sosialisasi, pelatihan, dan pendampingan intensif untuk memastikan setiap mitra memahami prosedur legalitas dan berhasil menyelesaikan proses administrasi yang diperlukan. Hasil kegiatan menunjukkan adanya peningkatan pemahaman mitra terhadap pentingnya legalitas usaha serta keberhasilan beberapa mitra dalam mendapatkan sertifikasi yang relevan. Selain itu, program ini membantu memperkuat daya saing produk mitra di pasar lokal maupun nasional. Dengan demikian, pengabdian ini tidak hanya mendorong peningkatan kualitas produk, tetapi juga membuka peluang yang lebih besar untuk ekspansi pasar. Kesimpulannya, program pendampingan legalitas usaha memberikan dampak yang signifikan dalam mendukung keberlanjutan dan profesionalisme pelaku IRT-UM.
Cause-and-effect analysis dalam pembuatan website integrasi untuk mengatasi tantangan promosi Desa Banyuwangi Pertiwi, Fungky Dyan; Badiuzzaman, Harith; Rasyid, Al Mushhaf Fahlul; Luhur, Abyan Estu; Azzidani, Muhammad Aziz; Zavitra, Al Aufairuzsyah Aswyn
Tintamas: Jurnal Pengabdian Indonesia Emas Vol. 2 No. 2 (2025): Tintamas: Jurnal Pengabdian Indonesia Emas
Publisher : Nur Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53088/tintamas.v2i2.2222

Abstract

The rapid advancement of technology has enabled the presentation of information practically and systematically that can be accessed by diverse groups of people. One of the essential types of information needed by the public is related to areas they intend to visit without having to be physically present beforehand. In response to these technological developments, an integrated website serves as an effective medium to provide the required information while simultaneously functioning as a platform for regional promotion. Beyond village promotion, the integrated website also benefits local business actors by enabling them to create business profiles. The cause-and-effect method using a fishbone diagram was applied as a systematic approach to address the promotional challenges faced by Banyuwangi Village and to provide solutions through the development of the integrated website. This method illustrates each underlying condition contributing to the problem, allowing appropriate countermeasures to be identified. The project resulted in the integrated website www.desabanyuwangi.com, which serves as a platform to showcase the village’s tourism, natural resources, and local businesses. In addition, training on Google Business was provided to local MSMEs to improve their digital literacy and expand their market reach. Overall, the program not only produced a tangible technological output but also fostered community empowerment through digital capacity building.
A New Approach to Measuring Institutional and Researcher Contributions to the SDGs: Combining Data from Elsevier SciVal and VOSviewer Pertiwi, Fungky Dyan; Anindito, Dhimas Cahyo; Habibi, Ilham; Saifudin; Munahar, Suroto; Purnomo, Bagiyo Condro; Fatimah, Yun Arifatul; Waluyo, Budi; Setiyo, Muji
Advance Sustainable Science Engineering and Technology Vol. 6 No. 4 (2024): 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.v6i4.1076

Abstract

The Sustainable Development Goals (SDGs), established by the United Nations in 2015, are a comprehensive global framework that addresses social, economic, and environmental challenges through sustainable development. This study examines the role of universities, specifically focusing on the Department of Mechanical Engineering at Universitas Muhammadiyah Magelang (UNIMMA), in contributing to the SDGs. The study utilized data from Elsevier’s SciVal to analyze the department’s contribution to the SDGs through scientific publications in the Scopus database. A total of 97 out of 156 articles published by nine researchers from the department were found to contribute to various SDGs, with a significant focus on Goals 7 (affordable and clean energy), 17 (partnerships for the goals), 9 (industry, innovation, and infrastructure), and 12 (responsible consumption and production). The study highlights the department’s collaborative efforts and alignment with global sustainability goals. In addition, VOSviewer was used to map the research collaboration network within the department, revealing strong contributions to energy efficiency, sustainable technologies, and climate action. However, the department's research shows limited contribution to social SDGs such as poverty alleviation and gender equality. By mapping the university’s contributions to the SDGs, this study helps faculty members identify opportunities for targeted research collaborations, address gaps in SDG contributions, and enhance partnerships with researchers from other institutions, thus broadening the university’s impact on global sustainable development goals.