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Application of a PEM Fuel Cell Engine as a Small-Scale Power Generator for Small Cars with Different Fuel Concentrations Herlambang, Yusuf Dewantoro; Sulistiyo, Wahyu; Margana, Margana; Apriandi, Nanang; Marliyati, Marliyati; Setiyo, Muji; Shyu, Jin Cherng
Automotive Experiences Vol 6 No 2 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.9225

Abstract

A fuel cell power generation system is a renewable energy system that works based on electrochemical processes and produces a direct electric current (DC). Specifically, a Proton Exchange Membrane (PEM) Fuel Cell can operate at low temperatures and produce an efficiency of around 40-60%. In this study, the performance test of the PEM Fuel Cell for power generation was carried out by supplying hydrogen gas using hydrogen from the electrolysis of the hydrogen generator with a variation of KOH catalyst solution with a concentration of 0.5 M; 1.0 M; 1.5 M; 2 M and using Ultra High Purity (UHP) hydrogen with various flow rates of 250 mL/min, 300 mL/min, 350 mL/min, 400 mL/min, 450 mL/min, and 500 mL/min. The test results showed that the output power of hydrogen produced by the electrolysis process was 10.8 W at a concentration of 1 M solutions at an input current of 20 A. The greater the concentration of the catalyst solution, the smaller the electrical power required for the electrolysis process. However, the hydrogen power supply produced by the hydrogen generator was not optimal, so it did not meet the needs of the PEM Fuel Cell. As a result, the PEM Fuel Cell could not work. Meanwhile, testing with UHP hydrogen produced the highest electrical power of 31.588 W at a flow rate of 450 mL/min with a load of 20 W. It indicates that the PEM Fuel Cell is optimal at the output power value with an efficiency of 69.80%.
Study on Solar Powered Electric Vehicle with Thermal Management Systems on the Electrical Device Performance Herlambang, Yusuf Dewantoro; Sulistiyo, Wahyu; Margana, Margana; Apriandi, Nanang; Nursaputro, Septiantar Tebe; Marliyati, Marliyati; Setiyo, Muji; Purwanto, Wawan; Rochman, Muhammad Latifur; Shyu, Jin Cherng
Automotive Experiences Vol 7 No 1 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10506

Abstract

This study aims to determine the reliability of applying a thermal management system in conjunction with Internet of Things in solar electric cars. In conventional electric cars or those whose driving energy source comes from gasoline fuel; the applied thermal management system is mainly used as a coolant for the internal combustion engine. However, for electric cars the thermal management system may be used for the main components such as controllers that convert solar module energy into electricity and batteries. Results from tests utilizing six DC fans for air cooling of the thermal management system yield two variations of battery charging conditions from the solar modules, namely variations of 25 and 400 turns of the trimmer constant current step-up charger. Test results from the proposed thermal management system show that the highest step-up charger temperature is 35.75 °C with voltage of 57.64 V for the variation of 25 laps. The test results on the battery voltage and temperature show that the highest battery temperature reaches 31.75 °C with voltage of 57.3 V at the variation of 25 rounds.
Experimental Investigation of Natural Circulation Stability Phenomena in a New Loop Heat Pipe Model Wirza, Alif Rahman; Kusuma, Mukhsinun Hadi; Rozi, Khoiri; Kiono, Berkah Fajar Tamtomo; Restiawan, Muhammad Mika Ramadhani; Giarno, Giarno; Pambudi, Yoyok Dwi Setyo; Yunus, Muhammad; ButarButar, Sofia Loren; Hatmoko, Sumantri; Apriandi, Nanang; Pramesywari, Afifa
JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA Vol 26, No 2 (2024): June 2024
Publisher : Pusat Teknologi Dan Keselamatan Reaktor Nuklir (PTKRN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/tdm.2024.7053

Abstract

The severe accident at the Fukushima Dai-ichi Nuclear Power Plant in Japan in 2011 highlighted the critical need for a passive cooling system to dissipate residual decay heat following the failure of active cooling systems in the nuclear facility. The loop heat pipe (LHP) is a promising technology for such applications. The objective of this research is to understand the natural circulation stability phenomena of new LHP model under varying conditions of filling ratio and heat load. The experimental methodology employed a laboratory-scale LHP model made of copper with an inner diameter of 0.104 m. The experiments were designed with filling ratios of 20%, 40%, 60%, 80%, and 100%, and hot water temperature as the evaporator heat source with variations of 60°C, 70°C, 80°C, and 90°C. The initial operating pressure was 10665.6 Pa, with a 5˚ inclination angle, demineralized water as the working fluid, and cooled by air at a velocity of 2.5 m/s. The results show that the natural circulation within the LHP occurs in two phases and maintained stability, with optimal performance observed at an 80% filling ratio and 90°C. The conclusion of this research indicates that natural circulation stability in the LHP operates well and occurs in two phases, proving that natural circulation in the LHP is effective in heat dissipation.
Desiminasi Teknologi Tepat Guna Pada Kelompok Tani Sumber Rejeki Purwosari Guna Menambah Nilai Manfaat Buah Sukun Apriandi, Nanang; Margana, Margana; Hendrawati, Dwiana; Widyaningsih, Wiwik Purwati; Prasetiyo, Budhi; Suwarti, Suwarti; Mulyono, Mulyono; Wahyono, Wahyono; Aulia, Nur Fatowil; Kristiawan, Timotius Anggit; Yanuar, Padang; An-Nizhami, Avicenna
Jurnal Pengabdian Masyarakat Bangsa Vol. 1 No. 10 (2023): Desember
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v1i10.575

Abstract

Peningkatan nilai manfaat dari buah sukun salah satunya adalah melalui proses diversifikasi buah sukun menjadi tepung sukun. Proses pengolahan daging buah sukun menjadi tepung sukun harus melalui beberapa tahapan proses, satu diantara sekian tahapan yang paling krusial adalah proses pengeringan daging buah sukun. Hal ini dikarenakan proses pengeringan, khusunya pada pengeringan konvensional, sangat dipengaruhi oleh kondisi cuaca. Tujuan dari kegiatan ini adalah desiminasi teknologi tepat guna (TTG) berupa alat pengering berbahan bakar liquefied petroleum gas (LPG) guna menjawab permasalahan pengeringan konvensional yang sangat rentan terhadap perubahan cuaca. Mitra yang dilibatkan di dalam kegiatan ini adalah Kelompok Tani Sumber Rejeki Purwosari yang beralamat di Dk. Kedungjangan, Kelurahan Purwosari, Kecamatan Mijen, Kota Semarang. Metode kegiatan yang diterapkan adalah pendekatan Participatory Rural Appraisal (PRA) dengan target utama proses alih teknologi alat pengering. Hasilnya, kegiatan ini memberikan gambaran dan pengetahuan baru terhadap mitra tentang bagaimana teknologi pengeringan, mulai dari tahapan perencanaan, pembuatan, uji kinerja, dan juga perawatan peralatan. Desiminisai TTG berupa alat pengering mampu menjawab tantangan pengeringan konvensional yang bergantung pada kondisi cuaca.
Upaya Transparansi Informasi di Desa Surokonto Wetan, Kecamatan Pageruyung, Kabupaten Kendal Melalui Desiminasi Teknologi Papan Informasi Berbasis Solar PV Wahyono, Wahyono; Prasetiyo, Budhi; Widyaningsih, Wiwik Purwati; Surindra, Mochamad Denny; Priyoatmojo, Slamet; Su'udy, Ahmad Hamim; Herlambang, Yusuf Dewantoro; Margana, Margana; Sumarno, F Gatot; Suwarti, Suwarti; Hermawan, Baktiyar Mei; Sutanto, Bayu; Apriandi, Nanang
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 3 (2024): Mei
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i3.853

Abstract

Keterbatasan akses informasi akibat infrastruktur yang belum memadai di beberapa daerah berpotensi menutup ruang keterlibatan masyarakat di dalam proses pembangunan. Hal ini menjadi penyebab sering terjadinya kegagalan dalam mencapai target pembangunan yang inklusif dan berkelanjutan. Kegiatan ini bertujuan untuk memastikan keterbatasan akses informasi masyarakat tersebut dapat diatasi melalui desiminasi teknologi papan informasi berbasis solar PV mulai dari sistem pemerintahan terbawah, yaitu desa. Aparatur Desa Surokonto Wetan dilibatkan sebagai mitra di dalam kegiatan ini. Pendekatan Participatory Rural Appraisal (PRA) digunakan di semua tahapan proses. Kegiatan ini menghasilkan seperangkat teknologi sistem informasi yang dapat diakses masyarakat secara luas untuk mendapatkan informasi sistem pemerintahan yang transparan.
Experimental study on the use of aluminum waste as a heat energy storage medium in laboratory-scale drying equipment Apriandi, Nanang; An-Nizhami, Avicenna; Herlambang, Yusuf Dewantoro; Raharjanti, Rani; Rachman, Iqo Yovie; Suseno, Sigit; Khoirunnisa, Hilma; Khusna, Atina Nurul
Jurnal Agrotek Ummat Vol 11, No 4 (2024): Jurnal Agrotek Ummat
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jau.v11i4.26626

Abstract

One of the best ways to reduce food loss during harvest is drying. The main challenge in the drying process is reducing energy consumption as a heat source in drying equipment. Integrating thermal energy storage (TES) into drying equipment has proven to be an effective way to enhance energy efficiency in the drying process. This research aims to explore the potential of TES material in the form of aluminium chips sourced from machining waste and integrated into a drying device. The thermal characteristics of the drying system without and with the addition of TES are compared and evaluated under two testing conditions, namely charging and discharging. The results show that the integration of TES in the drying system can reduce the percentage of temperature drop in the drying chamber due to the charging-discharging process by 58.57%, with the average percentage of temperature drop in the drying chamber without and with the addition of TES being 25.56% and 10.59%, respectively. Overall, aluminium chips obtained from machining waste can be used as an alternative TES material that is environmentally friendly, inexpensive, and readily available.
PENGARUH PASAR PLAMPANG DAN HAMBATAN SAMPING TERHADAP KINERJA RUAS JALAN LINTAS SUMBAWA-BIMA KILOMETER 62 Zulkarnaen, Zulkarnaen; Ilfiani , Pratiwi Dian; Negara, Komang Metty Trisna; Nantana, Nining Rara; Apriandi, Nanang
Jurnal SainTekA Vol. 5 No. 3 (2024): Jurnal SainTekA
Publisher : LPPM Universitas Samawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58406/sainteka.v5i3.1714

Abstract

Jalan Lintas Sumbawa-Bima Kilometer 62 adalah salah satu segmen jalan provinsi yang berada pada Kecamatan Plampang, yang mempunyai peranan penting dalam mendukung perkembangan sektor-sektor perdagangan, pendidikan, pemerintahan dan jasa di Kecamatan Plampang. Namun Jalan Lintas Sumbawa-Bima Kilometer 62 juga tidak terlepas dari permasalahan, terutama di depan Pasar Plampang yang mengakibatkan kinerja arus lalu lintas di daerah komersial berkurang, akibat beberapa faktor yang terjadi pada sisi jalan. Salah satu faktor yang teramati adalah hambatan samping pada sisi jalan seperti kendaraan keluar masuk, kendaraan berhenti, kendaraan parkir dan penyeberang jalan. Penelitian ini dilakukan selama 6 hari berturut-turut, pengumpulan data dilakukan selama 6 jam setiap interval 15 menit setiap harinya. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif jenis metode yang digunakan survei dan tindakan yaitu melakukan suatu pengamatan langsung terhadap lokasi yang ditinjau. Hasil penelitian menunjukkan kinerja jalan pada Jalan Lintas Sumbawa-Bima KM 62 didapatkan hasil analisa kapasitas jalan sebesar 1714,1262 skr/jam dengan nilai DJ = 0,244, VT rata-rata 20 km/jam, WT 9 detik dan nilai tingkat pelayanan jalan B. Nilai derajat kejenuhan pada ruas Jalan Lintas Sumbawa-Bima KM 62 menunjukkan < 0,85 dengan faktor hambatan samping akibat adanya Pasar Plampang dikategorikan dalam kelas hambatan samping sangat tinggi > 900 dengan VB sebesar 25,6 km/jam.
Solar Drying Technology: Current Research Trends and Future Perspectives Apriandi, Nanang; Raharjanti, Rani; An-nizami, Avicenna; Herlambang, Yusuf Dewantoro; Pambudi, Yoyok Dwi Setyo; Rozi, Khoiri; Negara, Komang Metty Trisna; Setyowati, Nur
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 3 (2024): November 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i3.193

Abstract

Solar drying technology has become a vital innovation for sustainable food preservation and renewable energy utilization, offering an energy-efficient alternative to conventional drying methods. This study provides a comprehensive bibliometric analysis of research trends, influential authors, key institutions, and geographical contributions in the field of solar drying technology from 2004 to 2024. We analyzed 108 relevant publications using the Scopus database and VOSviewer software, revealing a significant increase in research output since 2010, with a marked surge after 2016. India and China emerge as leading contributors, driven by their large agricultural sectors and favorable solar conditions. Key research efforts have focused on improving energy efficiency, optimizing drying processes, and preserving product quality. Despite these advancements, critical gaps remain, particularly in scaling solar drying systems and integrating hybrid technologies that combine solar energy with other renewable sources. This study highlights the importance of interdisciplinary collaboration to advance technological innovation and address challenges in food security and energy sustainability. Future research should focus on developing hybrid systems, finding better ways to store energy, and studying how solar drying affects the taste and nutritional value of food in order to make it more useful in a wider range of climates and farming situations. Keywords: Solar Drying Technology, Bibliometric Analysis, Renewable Energy, Hybrid Systems, and Food Preservation.
Solar Drying Technology: Current Research Trends and Future Perspectives Apriandi, Nanang; Raharjanti, Rani; An-nizami, Avicenna; Herlambang, Yusuf Dewantoro; Pambudi, Yoyok Dwi Setyo; Rozi, Khoiri; Negara, Komang Metty Trisna; Setyowati, Nur
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 3 (2024): November 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i3.193

Abstract

Solar drying technology has become a vital innovation for sustainable food preservation and renewable energy utilization, offering an energy-efficient alternative to conventional drying methods. This study provides a comprehensive bibliometric analysis of research trends, influential authors, key institutions, and geographical contributions in the field of solar drying technology from 2004 to 2024. We analyzed 108 relevant publications using the Scopus database and VOSviewer software, revealing a significant increase in research output since 2010, with a marked surge after 2016. India and China emerge as leading contributors, driven by their large agricultural sectors and favorable solar conditions. Key research efforts have focused on improving energy efficiency, optimizing drying processes, and preserving product quality. Despite these advancements, critical gaps remain, particularly in scaling solar drying systems and integrating hybrid technologies that combine solar energy with other renewable sources. This study highlights the importance of interdisciplinary collaboration to advance technological innovation and address challenges in food security and energy sustainability. Future research should focus on developing hybrid systems, finding better ways to store energy, and studying how solar drying affects the taste and nutritional value of food in order to make it more useful in a wider range of climates and farming situations. Keywords: Solar Drying Technology, Bibliometric Analysis, Renewable Energy, Hybrid Systems, and Food Preservation.
Modeling the Dynamics of a Passenger Car Using Experimental Data on Nonlinear Passive Shock Absorbers An-Nizhami, Avicenna; Herlambang, Yusuf Dewantoro; Apriandi, Nanang; Bono, Bono; Sugiono, Friska Ayu Fitrianti; Sai'in, Ali; Widodo, Ignatius Gunawan; Yanuar, Padang
Automotive Experiences Vol 8 No 1 (2025)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.12792

Abstract

This study explores the dynamic response of passenger cars equipped with nonlinear passive shock absorbers, emphasizing the nonlinear damping characteristics over traditional linear models in simulating real-world driving conditions. To capture the nonlinear damping behavior, experimental data from a shock absorber testing apparatus was utilized to derive an empirical formula. The damping force was modeled using a seventh-order polynomial equation, accurately representing the force-velocity relationship. This nonlinear damping model was integrated into a half-car suspension model, which was subjected to simulations involving two road profiles: a bump and an irregular sinusoidal road profile. Simulations demonstrated that the nonlinear model outperformed its linear counterpart, particularly in vibration control. It achieved significant reductions in body displacement, body acceleration, and suspension deflection, with notable improvements at resonance speeds. Root Mean Square (RMS) analysis further corroborated the nonlinear model's superior damping performance, showing lower displacement and acceleration values compared to the linear model. The findings indicate the effectiveness of nonlinear damping models in enhancing ride comfort and vehicle stability, providing a more realistic and effective framework for vehicle dynamic analysis compared to conventional linear approaches.
Co-Authors Ahmad Hamim Su’udy Alfauzi, Abdul Syukur Aminuyati An Nizhami, Avicenna Asih Priyati Aulia, Nur Fatowil A’tohillah, Muhammad Khusnul BAKTIYAR MEI HERMAWAN Berkah Fajar Tamtomo kiono Bono Bono Budhi Prasetiyo Dwiana Hendrawati Elfrida Rizky Riadini F Gatot Sumarno, F Gatot F. Gatot Sumarno, F. Gatot Giarno Giarno Hatmoko, Sumantri Hermawan, Baktiyar Mei Hidayat, Agriananta Fahmi I Gusti Bagus Wijaya Kusuma I Made Sudana I Made Widiyarta I Nyoman Gede Baliarta Ignatius Gunawan Widodo Ilfiani , Pratiwi Dian Janitra, Atikah Ayu Khoiri Rozi Khoirunnisa, Hilma Kholifah, Nevita Nur Khoryanton, Ampala Khusna, Atina Nurul Komang Metty Trisna Negara Kusuma, Mukhsinun Hadi Lily Maysari Angraini Luthfiana, Nadia Tasya Ayu Made Ery Arsana Margana Margana Margana Margana Mariani, Dina Marliyati Marliyati, Marliyati Mochammad Denny Surindra Muhammad Latifur Rochman Muhammad Yunus Muji Setiyo Mulyono Mulyono Nabila, Lathifa Dylla Nantana, Nining Rara Negara, Komang Metty Trisna Nizami, Avicenna An Nur Fatowil Aulia Nursaputro, Septiantar Tebe Nurul Qomariyah Padang Yanuar Padang Yanuar Pambudi, Yoyok Dwi Setyo Prakoso, Raden Gumilang Aji Pramesywari, Afifa Purwanto, Wawan Rachman, Iqo Yovie Rani Raharjanti Restiawan, Muhammad Mika Ramadhani Ribka Stephani Sai'in, Ali Satito, Aryo Setiawan, Trio Setiyawan, Trio Setyowati, Nur Shyu, Jin Cherng Sirajuddin Haji Abdullah Slamet Priyoatmojo, Slamet Sofia Loren Butarbutar, Sofia Loren Sudirman Sugiono, Friska Ayu Fitrianti Supandi Supriyo Supriyo Surya Abdul Muttalib, Surya Abdul Suseno, Sigit Sutanto, Bayu Suwarti Suwarti Su”™udy, Ahmad Hamim Timotius Anggit Kristiawan Totok Prasetyo Totok Prasetyo Ulum, Muhammad Showi Nailul Wahyono Wahyono Wahyu Isti Nugroho Wahyu Sulistiyo Wibowo, Andryana Dwiandara Widodo, Ignatius Gunawan Wirza, Alif Rahman Wiwik Purwati Widyaningsih Yanuar Mahfudz Safarudin Yusuf Dewantoro Herlambang Yusuf Dewantoro Herlambang Zainal Abidin Zulhan Widya Baskara Zulkarnaen Zulkarnaen