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All Journal Turbo : Jurnal Program Studi Teknik Mesin G-Tech : Jurnal Teknologi Terapan Jurnal Ilmu dan Inovasi Fisika
Muhammad Fuad Abdul Hakim
Universitas Merdeka Madiun
Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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Review Penggunaan Feedwater Heater Pada Pembangkit Tenaga Uap Hakim, Muhammad Fuad Abdul; Rusirawan, Dani
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 1 (2024): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i1.3166

Abstract

Aktivitas pembangkit tenaga uap berdampak pada naiknya temperatur permukaan bumi. Peralihan pembangkit yang bersumber dari energi konvensional menuju energi terbarukan memerlukan waktu. Maka, diperlukan upaya optimasi pembangkit tenaga uap sebagai solusi jangka pendek, terutama pada proses penambahan kalor agar lebih efisien. Salah satu upaya optimasi yaitu penggunaan feedwater heater, dimana dapat meningkatkan temperatur fluida sebelum masuk ke boiler sehingga mengurangi jumlah kalor yang ditambahkan. Artikel ini diawali dengan penjelasan feedwater heater serta pengaruh penggunaannya pada pembangkit tenaga uap. Kemudian dilanjutkan dengan pembahasan pengaruh jumlah dan konfigurasi feedwater heater. Penggunaan low and high pressure feedwater heater juga menjadi pembahasan termasuk upaya-upaya optimasinya. Selanjutnya, dijelaskan kombinasi dengan unit lain, salah satunya dengan solar collector. Sebagai penutup, beberapa topik penelitian selanjutnya terkait feedwater heater diusulkan sebagai alternatif pengembangan dari penelitian yang sudah ada.
Comparing the Effect of Using DC Fans and Heatsinks As Cooling Systems on Photovoltaic Efficiency Hakim, Muhammad Fuad Abdul; Putra, Mohammad Alexin; Nurhilal, Otong
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i2.2947

Abstract

One of the utilizations of solar energy is to be converted into electricity using photovoltaics (PV). The most important performance parameter of PV is efficiency. The efficiency will decrease as the PV temperature increases. Therefore, a cooling system is needed to increase PV efficiency. The objective of the research is to determine and compare the effect of DC fan and heatsink as a cooling system on PV efficiency. Four PV units with a capacity of 30 WP are used. The experiment is conducted as follows, the first PV is equipped with DC fan cooling, the second PV with heatsink cooling, the third PV with a combination of DC fan and heatsink cooling, and the fourth PV is without cooling as a reference. The result shows, that the combination of DC fan and heatsink cooling system provides the highest efficiency improvement, namely 32.08%, followed by DC fan cooling, namely 16.04%. As for heatsink cooling, there is no improvement in efficiency. The combination of DC fan and heatsink cooling system can dissipate heat from the PV more effectively than DC fan cooling system, so the PV temperature is lower and produces higher output power and efficiency. The heatsink cooling system is not effective in dissipating heat because of limited natural airflow due to the low PV stand which is only 30 cm from the ground.
Effect of Thermoelectrics as a Cooling System on Photovoltaic Efficiency and Economic Analysis Abdul Hakim, Muhammad Fuad; Nurhilal, Otong
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 9, No 1 (2025)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jiif.v9i1.60647

Abstract

Photovoltaics (PV) are one way to utilize sunlight as a renewable energy source. However, currently commercially available PV is only capable of converting around 15% of sunlight into electrical energy, while the rest is converted into heat which can increase the temperature of the PV itself. On the other hand, increasing PV temperature results in a decrease in the output power produced and ultimately reduces efficiency. Therefore, efforts are needed to reduce the PV temperature in order to increase efficiency, namely by adding a cooling system to the PV. One PV cooling system that tends to be new is the thermoelectric cooler (TEC). However, the use of TEC will increase the cost of TEC components and electrical power. This research aims to determine the effect of using TEC as a cooling system on PV efficiency and its economic analysis. Two PV units are used, with a TEC cooling system and without a cooling system which is used as a reference. Experiments were carried out outdoors in direct sunlight. The results showed that the use of TEC as a cooling system was able to increase PV efficiency by 6.45%. Meanwhile, from an economic analysis using levelized cost of energy (LCOE), it was found that, although it can increase PV efficiency, the use of TEC as a cooling system has an LCOE of Rp. 15,871/kWh, meaning that using TEC is more expensive than LCOE without a cooling system, namely only Rp. 5,350/kWh.
Review Penggunaan Feedwater Heater Pada Pembangkit Tenaga Uap Hakim, Muhammad Fuad Abdul; Rusirawan, Dani
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 1 (2024): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i1.3166

Abstract

Aktivitas pembangkit tenaga uap berdampak pada naiknya temperatur permukaan bumi. Peralihan pembangkit yang bersumber dari energi konvensional menuju energi terbarukan memerlukan waktu. Maka, diperlukan upaya optimasi pembangkit tenaga uap sebagai solusi jangka pendek, terutama pada proses penambahan kalor agar lebih efisien. Salah satu upaya optimasi yaitu penggunaan feedwater heater, dimana dapat meningkatkan temperatur fluida sebelum masuk ke boiler sehingga mengurangi jumlah kalor yang ditambahkan. Artikel ini diawali dengan penjelasan feedwater heater serta pengaruh penggunaannya pada pembangkit tenaga uap. Kemudian dilanjutkan dengan pembahasan pengaruh jumlah dan konfigurasi feedwater heater. Penggunaan low and high pressure feedwater heater juga menjadi pembahasan termasuk upaya-upaya optimasinya. Selanjutnya, dijelaskan kombinasi dengan unit lain, salah satunya dengan solar collector. Sebagai penutup, beberapa topik penelitian selanjutnya terkait feedwater heater diusulkan sebagai alternatif pengembangan dari penelitian yang sudah ada.
Redesign of the Aeration Centrifugal Fan Impeller in a Steam Power Plant to Reduce Vibration Issues Dadang Almadi; Mohammad Alexin Putra; Muhammad Fuad Abdul Hakim
G-Tech: Jurnal Teknologi Terapan Vol 9 No 2 (2025): G-Tech, Vol. 9 No. 2 April 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i2.6792

Abstract

The aeration centrifugal fan (ACF) functions to inject pressurized air into the aeration pond containing wastewater from power plant operations. This increases the water's oxygen content before discharge. However, as a rotating device, the ACF often faces high vibration issues, including at a steam power plant in Cilacap Regency. Vibration in this unit exceeded permissible limits. Analysis identified blade pass and surging, linked to the impeller design, as the cause. This indicates the existing impeller was not suited to actual operational conditions. This study aims to redesign the impeller to reduce vibration. The redesign involved increasing the number and width of blades, followed by CFD simulations and vibration testing. Results showed volumetric flow rate and pressure increased from 50,887.1 m³/s to 61,185 m³/s and from 226.9 kPa to 696.3 kPa. Vibration dropped from 19.96 mm/s to 2.916 mm/s (below the 7.1 mm/s limit). Thus, the redesign successfully reduced excessive vibration.
Temperature Reduction Performance of Radiative Cooling Paint on Building Roofs Hakim, Muhammad Fuad Abdul; Putra, Mohammad Alexin; Subekti, Fajar
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4602

Abstract

Passive cooling technologies continue to be developed to provide a cooling effect without external energy input. One example is radiative cooling paint (RCP). RCP dissipates heat by emitting thermal radiation and reflecting solar irradiation, thereby reducing the temperature of the coated object. The temperature reduction performance of RCP is influenced by the substrate on which it is applied. Previous studies have generally not included substrates with potential applications for RCP, such as building roofs. This study aimed to evaluate the temperature reduction performance of RCP when applied to different roofing materials. RCP samples were prepared using barium sulfate pigment and applied to corrugated metal roofing, clay roof tiles, and stone-coated metal roofing, then tested under direct sunlight. The results showed that applying RCP reduced the average temperature by 6 °C (13.1%) on corrugated metal roofing, 6.4 °C (13.3%) on clay roof tiles, and 14.1 °C (24.7%) on stone-coated metal roofing.
Co-Authors Dadang Almadi Mohammad Alexin Putra Otong Nurhilal Putra, Mohammad Alexin RUSIRAWAN, DANI SUBEKTI, FAJAR