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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN Majalah Ilmiah MOMENTUM Jurnal Elementer (Elektro dan Mesin Terapan) Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming JURNAL CRANKSHAFT Motor Bakar : Jurnal Teknik Mesin Jurnal Pengabdian kepada Masyarakat Nusantara DEVICE Devotion: Journal of Research and Community Service Blend Sains Jurnal Teknik Jurnal Pengabdian Masyarakat Bhinneka STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer JURUTERA (Jurnal Umum Teknik Terapan) Jurnal Polimesin Catha Saintifica Palawa Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat SAPANGAMBEI MANOKTOK HITEI
Safi'i, Muhamad
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Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Workshop Perawatan dan Perbaikan PLTS berbasis Limbah untuk Masyarakat RW 3 Kelurahan Bergaslor Safi'i, Muhamad; Febriyandyono, Muhammad Faesal; Jannah, Wardatul; Malik, Muchamad; Burhanudin, Aan; Mukhtar, Agus; Hermana, Rifki; Setyoadi, Yuris; Haryono, Muhammad Budi; Ma'mun, Hisyam; Androva, Althesa
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 7 No. 1 (2026): Edisi Januari - April
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v7i1.8383

Abstract

Listrik merupakan sumber energi vital guna mendukung kegiatan masyarakat, dan pembangkit listrik tenaga surya menjadi topik hangat akhir-akhir ini. PLTS (Pembangkit Listrik Tenaga Surya) berbasis limbah menjadi bahasan menarik. Namun masalah perawatan dan perbaikan pada instalasi PLTS (Pembangkit Listrik Tenaga Surya) berbasis limbah menemui kendala karena terbatasnya ilmu dan pengetahuan Mitra sehingga Tim Pengabdian kepada Masyarakat Teknik Mesin UPGRIS Semarang menawarkan solusi berupa kegiatan workshop dan pelatihan secara langsung guna meningkatkan pengetahuan dan keterampilan Mitra. Kegiatan ini dilaksanakan di Wilayah RT 6, RW 3, Kelurahan Bergaslor, Kabupaten Semarang dengan urutan kegiatan berupa workshop dan pelatihan langsung dengan tujuan mengatasi masalah yang dikeluhkan oleh mitra. Hasilnya workshop perawatan dan perbaikan PLTS (Pembangkit Listrik Tenaga Surya) berbasis limbah terbukti memberikan manfaat untuk Mitra dalam meningkatkan pengetahuan dan keterampilan yang ditunjukkan dengan semua peserta (7 orang) terbukti dapat melaksanakan keguatan dengan baik. Kegiatan Pengabdian Kepada Masyarakat ini diharapkan dapat memberikan pengetahuan dan keterampilan Mitra dan Masyarakat sekitar dalam mengatasi kerusakan instalasi PLTS (Pembangkit Listrik Tenaga Surya) berbasis limbah dengan baik. Hasil tersebut mengkonfirmasi bahwa workshop perawatan dan perbaikan PLTS (Pembangkit Listrik Tenaga Surya) berbasis limbah memberikan dampak positif dan berpotensi dapat diaplikasikan secara luas di lapangan.
RANCANG BANGUN PANEL SURYA BERBASIS LIMBAH RUMAH TANGGA UNTUK KEBUTUHAN PENERANGAN JALAN RW 3 KELURAHAN BERGASLOR, SEMARANG Muhamad Juli Saputra; Muhamad Idrokul Fahmi; Ahmad Ramdhani; Sahrul Maulana Rozaki; Hamdan Ramadan; Muhamad Safi’i
Jurnal Pengabdian Masyarakat Sapangambei Manoktok Hitei Vol. 4 No. 2 (2024): Jurnal Pengabdian Masyarakat SAPANGAMBEI MANOKTOK HITEI
Publisher : Universitas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36985/ckajg087

Abstract

Abstract   Electricity is a source of energy necessary to support various kinds of human activities, one of which is solar power plants. Solar power plants are power plants that convert solar energy into electrical energy. Solar power plants are classified as renewable energy. Solar power plants using household waste are a special attraction, but many people still cannot make maximum use of them due to limited knowledge and knowledge. So there is a need for education on using and empowering household waste to create designs for solar energy for street lighting applications. Through the Community Service program, activities are carried out in the Krajan RT 06, RW 03, Bergaslor Village, Bergas District, Semarang Regency. Community Service activities are carried out through stages of education, training, and direct design practice to resolve problems complained by partners. The household waste-based solar panel prototype consists of a 5 mm thick iron plate as a solar panel holder, a 5 x 5 cm hollow piece as a pole, and acrylic. Solar panel 1.2 x 1 m. Used VCD cassettes are used to wind up copper wire with a diameter of 1.5 mm, and acrylic waste for solar panel modules. The result of this activity is a solar panel prototype made by utilizing household waste with a solar panel capacity of 120 Watts. These results confirm that solar panels made from waste materials can support street lighting in the Krajan RT 06, RW 03, Bergaslor Village, Bergas District, Semarang Regency.
STUDI NUMERIK ANALISA PENGARUH VARIASI LONGITUDINAL DAN TRANSVERSAL PITCH TERHADAP PERFORMA FIN AND TUBE HEAT EXCHANGER Muhamad Safi'i; Nazaruddin Sinaga; Martha Khoirunnisa; Muhammad Iqbal Farhan Putra Arya; Agung Nugroho; Tabah Priangkoso; Susanto Susanto; Suheri Suheri; Oktarina Heriyani; Yafid Effendi
JURNAL ILMIAH MOMENTUM Vol 20 No 2 (2024): Vol 20, No 2
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v20i2.11945

Abstract

Fin and tube heat exchanger (FTHE) banyak digunakan dalam sistem pendingin, petrokimia, dan aplikasi HVAC&R karena pembuatannya lebih mudah, konstruksinya sederhana, rendah biaya, dan relatif mudah dalam perawatan menjadikannya salah satu yang paling umum digunakan. Peningkatan kebaikan perpindahan panas pada FTHE telah banyak di investigasi guna untuk meningkatkan performanya. Riset ini dilakukan untuk mengetahui pengaruh variasi rasio arah longitudinal dan transversal pitch pada FTHE terhadap performa termalnya dengan menggunakan aplikasi Fluent pada program komputer Computational Fluid Dynamics. 2 variasi desain FTHE berupa rasio arah longitudinal dan arah transversal pitch di berbagai variasi kecepatan aliran fluida dengan heat flux konstan sebesar 100 W diusulkan. Hasil terbaik riset ini di dapatkan bahwa variasi rasio arah longitudinal pitch 14,5 mm dengan nilai koefisien perpindahan panas sebesar 97,24 W/m²K, sedangkan rasio arah transversal pitch 11,7 mm dengan nilai koefisien perpindahan panas sebesar 107,82 W/m²K. Hasil tersebut mengkonfirmasi bahwa variasi rasio arah longitudinal pitch 14,5 mm dan transversal pitch 11,7 mm dapat digunakan dan diterapkan untuk aplikasi praktis pada FTHE. Desain tersebut juga memungkinkan dapat dijadikan rekomendasi untuk perancangan dan diterapkan secara langsung di lapangan.
ANALISIS VARIASI BASIN TURBIN REAKSI VORTEX ULTRA LOW-HEAD SUDU AKSIAL MENGGUNAKAN METODE CFD Muhamad Shohibun Amin; Kun Suharno; Herru Santosa Budiono; Muhamad Safi’i
JURNAL ILMIAH MOMENTUM Vol 20 No 2 (2024): Vol 20, No 2
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v20i2.12100

Abstract

Penggunaan energi fosil secara berlebihan menyebabkan berkurangnya sumber daya energi, memicu pemanasan global, efek rumah kaca, dan polusi udara. Oleh karena itu, energi terbarukan menjadi solusi yang penting untuk mengatasi masalah tersebut. Salah satu pendekatan yang menarik untuk dikembangkan adalah pemanfaatan energi air dengan head yang sangat rendah, seperti di sungai atau saluran irigasi, menggunakan turbin reaksi vortex ultra-low head. Penelitian ini bertujuan untuk mengetahui performa turbin reaksi vortex ultra-low head melalui optimasi desain basin dengan menggunakan Computational Fluid Dynamics (CFD). Penelitian dilakukan dengan memvariasikan dimensi inlet dan outlet basin. Variasi yang digunakan adalah ukuran inlet 180 mm, 200 mm, dan 220 mm serta outlet 120 mm, 130 mm, dan 140 mm. Hasil penelitian menunjukkan bahwa turbin reaksi vortex ultra-low head dengan konfigurasi basin 220-120 mm memberikan performa terbaik pada debit 8,312 L/s, gaya (force) sebesar 74,149 N, turbulensi 6,673 m/s², dan kecepatan aliran 35,100 m/s. Geometri turbin reaksi vortex ultra-low head dengan basin 220-120 mm menjadi desain yang paling ideal dalam penelitian ini. Desain tersebut dapat dijadikan acuan dalam perancangan turbin reaksi vortex ultra-low head dan memungkinkan untuk diterapkan secara langsung di lapangan secara praktis.
Numerical Investigation of The Effect of Fin Thickness on Straight Fin Heat Sink on Heat Transfer Performance Muhamad Safi'i; Nazaruddin Sinaga; Tabah Priangkoso; Suheri Suheri; Rouf Muhammad
JURNAL ILMIAH MOMENTUM Vol 21 No 1 (2025): April
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v21i1.12682

Abstract

The heat load on computer chips during computing performance is the main topic, so a cooling device is needed. Heat sink is one of the tools commonly applied to reduce the heat load during computing performance of computer systems. Various heat sink configurations have been widely developed and studied to obtain designs with the best thermal performance. This research was conducted to investigate the best design on a straight fin heat sink (SFHS) that has the best thermal and hydraulic performance. SFHS with fin thickness variations of 1 mm, 2 mm, and 3 mm are proposed in this study. The numerical method was carried out using the Computational Flui Dynamics program by considering fluid flow velocities of 4 m/s, 6 m/s, 8 m/s and 10 m/s. The numerical results show that the cooling rate of SFHS can be increased by using SFHS with a thickness of 3 mm and a fluid flow velocity of 10 m/s with a maximum Nusselt number value of 59.74. Therefore, it is concluded that the SFHS has prospects for further study and can be applied practically in the field for micro electronic components and computer systems. Keywords: Heat sink, SFHS, Straight fin.
An Experimental Study on the use of Fins on Tubes In Shell-and-Tube Heat Exchangers To Improve Thermal Performance Anandar, Ommy Nurega; Safi’i, Muhamad; Androva, Althesa
Devotion : Journal of Research and Community Service Vol. 7 No. 5 (2026): Devotion: Journal of Community Research
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/devotion.v7i5.25698

Abstract

This research is to analyze the efficiency of the heat exchanger with the addition of fins in each tube. In order to see the efficiency of heat exchangers, this research was carried out through heat exchanger machine tests along with the collection of calculation data in the form of equations. This heat exchanger is in the form of shell and tube, which in the shell has eight passes, each pass has eight tubes and each tube has an additional number of fins, two, four and six. The flow of fluids used in heat exchanger research is through cross flow, where the flow of cold fluid will be channeled through a tube inside the shell that is blown by the blower where the speed is regulated to get a different mass rate, there will also be a heat transfer of cold fluid from the hot fluid distributed in the shell. Through the LPG combustion stage, hot fluid is produced for hot fluid. The cold fluid passing through the tube will receive heat from the hot fluid to the rotary dryer. After data calculation, heat exchangers were obtained with 2 fins per tube for an efficiency output of 57.9%, heat exchangers with 4 fins per tube with an output of 58.5%, heat exchangers with 6 fins per tube with an output of 61.4%.
Bahasa Inggris: Bahasa Inggris Safi'i, Muhamad; Irfan, Akhmad; Muhammad, Rouf; Suheri, Suheri; Effendi, Yafid
JURNAL ILMIAH MOMENTUM Vol 22 No 1 (2026): April
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v22i1.15451

Abstract

Cavitation is a major issue in centrifugal pumps because it impacts their performance and efficiency. Experimental research was conducted to investigate the effect of the number of impeller blades and mass flow rate on the cavitation phenomenon in centrifugal pumps, as well as to characterize them. The Ebara brand centrifugal pump type 65x50 FSS4JA used in the TCU installation of the Casting Machine has a number of blades of 4 and 6 with a fixed inclination angle of 60° as the object of research. The fluid mass flow rate varies with values ​​of 1.67 kg/s, 3.33 kg/s, 5.67 kg/s, and 7.33 kg/s. The research findings show that the highest cavitation occurs in the centrifugal pump with 4 blades, with an NPSH value reaching 2.02 at a mass flow rate of 5.67 kg/s, while the lowest value is found in the pump with 6 blades with an NPSH of 1.88 at a mass flow rate of 7.33 kg/s. A 6-blade centrifugal pump operating at a mass flow rate of 7.33 kg/s demonstrated the best results in this study and is feasible for field application. Keywords: Impeller, Cavitation, Pump, Centrifugal.
Numerical Study of the Effect of Grid Number and Viscous Model on Fin and Tube Heat Exchanger Performance MUHAMAD SAFI'I; NAZARUDDIN SINAGA; EFLITA YOHANA; YAFID EFFENDI; AKHMAD IRFAN; SUHERI SUHERI; ROUF MUHAMMAD; AGUNG NUGROHO; CANDRA WAHYU SPORTYAWAN
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol 12 No 1 (2026): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v12i1.6917

Abstract

The fin and tube heat exchanger (FTHE) has attracted attention among technicians and researchers because of its performance. This research was conducted to determine the effect of variations in the number of grids and viscous models on FTHE on its thermal performance using the Fluent application in the Computational Fluid Dynamics computer program, which was varied against the number of grids and viscous models in various variations of fluid flow speed with a constant heat flux of 100 W. The best results of this research were obtained with the variation of the longitudinal pitch ratio of 14.5 mm with a heat transfer coefficient value of 97.24 W/m2K, while the ratio of the transverse pitch direction of 11.7 mm with a heat transfer coefficient value of 107.82 W/m2K. The best results of this research were obtained at variations in the number of grids of 358456 in variations of the viscous k-w Standard model with an average FTHE temperature value of 21.35 oC and a maximum heat transfer coefficient value of 101.74 W/m2K. These results confirm that the variation of the number of grids of 358456 in the variation of the viscous k-w Standard model allows the numerical study model to be recommended and used for practical applications on machine devices, and can be applied directly in the field. Keywords: Fin and Tube Heat Exchanger (FTHE), Longitudinal Pitch, Transversal Pitch, Performa.
Co-Authors Aan Burhanudin Adi Nugroho, Rizki Agung Nugroho Agung Nugroho AGUNG NUGROHO Agus Mukhtar Ahmad Ramdhani Ahmad Ramdhani, Ahmad AKHMAD IRFAN Alam, Bagus Aditama Ali, Sulaiman Amin, Muhamad Shohibun Anandar, Ommy Nurega Andi Ibrahim Soumi Androva, Althesa Arif, Zainal Ashar, Ilham Ariawan Burhanuddin, Aan CANDRA WAHYU SPORTYAWAN Darmanto Darmanto Digdoyo, Aji EFLITA YOHANA Eflita Yohana Fahmi, Muhamad Idrokul Fahmi, Muhammad Idrokul Farhan Putra Arya, M. Iqbal Febriandyono, Muhammad Faesal Febriyandyono, Muhammad Faesal Hamdan Ramadan Hamdani Umar Hermana, Rifki HERMAWAN Herru Santosa Budiono Hutomo Jiwo Satrio Ibrahim Soumi, Andi Idrokul Fahmi, Muhamad Irfan, Akhmad Isdhianto, Irfan Jayawarsa, A.A. Ketut Joko Sumbogo, Yuliarto Juli Saputra, Muhamad Khaqurokhim Kun Suharno Ma'mun, Hisyam Margono Margono Martha Khoirunnisa Maulana Rozaki, Syahrul Maulana, Dendy Ma’mun, Hisyam Menazmi, Teuku Muchamad Malik Muhamad Idrokul Fahmi Muhamad Juli Saputra Muhamad Shohibun Amin Muhammad Budi Haryono Muhammad Iqbal Farhan Putra Arya Muhammad Iqbal Farhan Putra Arya Muhammad, Rouf NAZARUDDIN SINAGA Nazaruddin Sinaga Nazaruddin Sinaga Nazaruddin Sinaga Nugroho, Agung Nugroho, Cahyo Hadi Nur Baiti Jannati Nurkhalis, Yahdi Eka Nurman Pamungkas Oktarina Heriyani Oktarina Heriyani Pangestu, Anugrah Widhi Pranata, Dwi Yan Damar Arya Pujianto, Muhammad Edi Ramadan, Hamdan RAMADHAN NUR, HAMID Ramadhan, Hamdan Raziqin, Muhammad Khairul Rizki Bintoro, Sefrian Rizki Dwi Ardika Romadhon, Bukhori Putra Rouf Muhammad Rouf Muhammad ROUF MUHAMMAD Rozaki, Syahrul Maulana Sabri, Faris Ahmad Mizanus Sahrul Maulana Rozaki Saputra, Muhamad Juli Saputra, Muhammad Juli Sugiyarto Suheri Suheri - Suheri Suheri Kertosenjoyo2, Suheri Suheri Suheri Suheri Suheri SUHERI SUHERI Surawan, Surawan Susanto Susanto Susanto Susanto Tabah Priangkoso Tabah Priangkoso Tabah Priangkoso Taufan Arif Adlie Teuku Azuar Rizal Tri Widodo Besar Riyadi Turnip , Darlis Wahid, Muhammad Abdul Wardatul Jannah, Wardatul Wibi Pramanda Widodo, Syamsul Bahri Widyantoro, Arif YAFID EFFENDI Yafid Effendi Yafid Effendi Yahya Hidaytullah, Muhammad Yuris Setyoadi