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All Journal Rekayasa Mesin Journal of Engineering and Management in Industrial System Indonesian Green Technology Journal Jurnal Rekayasa Mesin Eksergi: Jurnal Teknik Energi Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Jurnal Pengabdian Masyarakat Bangsa Jurnal Polimesin
Ahmad Hamim Su’udy
Politeknik Negeri Semarang
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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PERUBAHAN SUHU BAHAN BAKAR PREMIUM UNTUK MENGETAHUI DAYA PADA MESIN SUZUKI KATANA Nailul Ulum, Muhammad Showi; SU'UDY, AHMAD HAMIM; SAI'IN, ALI; ADITAMA, SURYA
Eksergi Vol. 17 No. 2 (2021): MEI 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (776.196 KB) | DOI: 10.32497/eksergi.v17i2.2601

Abstract

Bahan bakar jenis premium masih menjadi banyak incaran konsumen kalangan menengah kebawah, bahan bakar premium memiliki nilai octane paling rendah, daya yang dihasilkan juga paling rendah dari bahan bakar jenis pertalit dan pertamax. Banyak kalangan berlomba untuk mencari cara bagaiman meningkatakan efisiensi dalam pemakaian bahan bakar jenis premium. Pemanasan mula bahan bakar merupakan salah satu cara untuk meningkatkan efisiensi dalam proses pembakaran, dengan pemanasan mula pada bahan bakar mampu membuat partikel bahan bakar cepat untuk menguap. Tujuan dalam penelitian ini adalah untuk mengetahui pengaruh variasi pemanasan bahan bakar melalui upper tank radiator terhadap daya mesin pada mesin Suzuki SJ410. Variasi yang digunakan adalah bahan bakar tanpa pemanas, bahan bakar dengan panjang pipa 450 mm, dan 900 mm dengan diameter pipa 6 mm. dengan putaran mesin 2500 ”“ 5400 Rpm. Metode yang digunakan untuk mengolah data adalah dengan One-Way Anova. Hasil penelitian menunjukkan bahwa ada perbedaan yang signifikan penggunaan variasi pemanasan bahan bakar terhadap daya pada mesin Suzuki SJ410 dengn daya tertinggi sebesar 29,90 HP pada 4500 RPM dengan panjang pipa 900 mm.
FRONT MATTER EKSERGI JURNAL TEKNIK ENERGI Su'udy, Ahmad Hamim
Eksergi Vol. 17 No. 2 (2021): MEI 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (759.486 KB) | DOI: 10.32497/eksergi.v17i2.2641

Abstract

FRONT MATTER EKSERGI JURNAL TEKNIK ENERGI
PERHITUNGAN ECONOMIC DISPATCH TIGA BUAH PEMBANGKIT MENGGUNAKAN METODE MERIT ORDER DENGAN MEMPERTIMBANGKAN LOSSES Mariani, Dina; Safarudin, Yanuar Mahfudz; Aulia, Nur Fatowil; Su'udy, Ahmad Hamim; MS, Nanang Apriandi; Hermawan, Baktiyar Mei
Eksergi Vol. 17 No. 3 (2021): SEPTEMBER 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.767 KB) | DOI: 10.32497/eksergi.v17i3.2984

Abstract

Merit order adalah metode paling sederhana dalam economic dispatch yang dilakukan dengan mengurutkan pembangkit dari yang paling rendah sampai yang paling tinggi biaya operasinya. Pembangkit yang paling rendah biaya operasinya (Rp/MWh) dianggap sebagai pembangkit yang paling ekonomis. Penelitian ini membahas tentang perhitungan daya pada pembangkit dengan menggunakan metode merit order. Ada tiga pembangkit yang digunakan untu menyuplai beban sebesar 975 MW. Simulasi digunakan dengan memperhitungkan losses. Hasil menunjukkan bahwa merit order membantu dispatcher untuk mengambil keputusan lebih cepat. SOP merit order dibuat berdasarkan biaya operasi pembangkit sehingga harus selalu disesuaikan dengan harga bahan bakar terkini.
FRONT MATTER EKSERGI JURNAL TEKNIK ENERGI Su'udy, Ahmad Hamim
Eksergi Vol. 17 No. 3 (2021): SEPTEMBER 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (830.125 KB) | DOI: 10.32497/eksergi.v17i3.2986

Abstract

FRONT MATTER EKSERGI JURNAL TEKNIK ENERGI
Analysis of The Utilization of Solar Panels as Pump Crusters Automatically in Fish Pond Farming Suwarti, Suwarti; H, Yusuf Dewantoro; Su'udy, Ahmad Hamim; Prasetyo, Budhi; Margana, Margana; W, Wiwik Purwati; Supriyo, Supriyo
Eksergi Vol. 19 No. 01 (2023): JANUARY 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v19i01.4246

Abstract

Abstract”” The purpose of making this final task is to apply the solar power system as a source of electrical energy to move the water pump automatically in fish ponds. This system works automatically with the Water Level Control tool sensor (WLC), so that if the water level drops or rises then the water pump will automatically work. On this automated system use the Smart Relay SR2B121BD and the ZelioSoft 2 application.  Data retrieval carried out at 10.00 -14.00 WIB, obtained data pumps 1 and 2 for a height of 1 cm for 30 minutes and a height of 2 cm for 70 minutes. The amount of discharge the pump produces 1 and 2 ranges from 37 L/M to 45 L/M.    Pump 1 Test results obtained an average efficiency of 7.68%, with the highest efficiency of 11.03% and the lowest efficiency of 5.26%, while the average pump efficiency of 2, 7.05% with the highest efficiency of 10.66% and the lowest efficiency of 5.41%. The average efficiency of the solar panels is 11.20% with the highest efficiency of 14.60% and the lowest efficiency of 7.29%.  
Karakteristik Turbin Savonius Dengan Variasi Sudut Su'udy, Ahmad Hamim
Eksergi Vol. 17 No. 3 (2021): SEPTEMBER 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v17i3.4381

Abstract

Energi angin merupakan salah satu energi yang dapat diubah menjadi energi listrik menggunakan turbin angin. Berdasarkan sumbu putarnya turbin angin terdiri dari dua macam yaitu turbin angin sumbu horisontal dan turbin angin sumbu vertikal. Turbin angin dengan sumbu vertikal mempunyai beberapa jenis diantaranya turbin angin Darrieus, turbin angin Savonius, dan turbin angin H. Tujuan dari pembuatan dan pengujian ini adalah untuk mengetahui pengaruh kecepatan angin dan efisiensi sistem dari turbin angin Savonius blade dengan variasi sudut serang pada kecepatan angin tertentu. Berdasarkan hasil pengujian dapat diketahui nilai daya generator tertinggi kecepatan angin 6 m/s didapatkan sebesar 3,85 Watt pada sudut serang 20 ° dan beban 1 lampu DC, pada kecepatan angin 7 m/s didapatkan nilai daya generator tertinggi sebesar 5,58 Watt pada sudut serang 0 ° dan beban 3 lampu DC, sedangkan nilai daya generator tertinggi pada kecepatan angin 8 m/s didapatkan sebesar 8,52 Watt pada sudut serang 5 ° dan beban 4 lampu DC. Nilai daya generator berbanding lurus dengan putaran turbin. Semakin besar Putaran turbin maka daya generator yang dihasilkan juga semakin besar.
Characteristics of the Savonius turbine to variation angles Su'udy, Ahmad Hamim; Prasetiyo, Budhi; Aulia, Nur Fatowil; Surindra”¬, ”ªMochamad Denny; Safarudin”¬, ”ªYanuar Mahfudz; Sutanto, Bayu
Eksergi Vol. 19 No. 2 (2023): MAY 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v19i2.4476

Abstract

Wind energy is a form of energy that can be converted into electrical energy using a wind turbine. Based on the axis of rotation, wind turbines are of two types, namely horizontal axis wind turbines and vertical axis wind turbines. Wind turbines with a vertical axis have several types including Darrieus wind turbines, Savonius wind turbines, and H wind turbines. The purpose of this manufacture and test is to determine the effect of wind speed and system efficiency from the Savonius 8 blade wind turbine with variations in the angle of attack on wind speed. certain. Based on the test results, it can be seen that the highest generator power value is at a wind speed of 6 m/s worth 3.85 Watt with an angle of attack of 20 ° and a load of 1 DC lamp, a wind speed of 7 m/s worth 5.58 Watt with an angle of attack   f 0 ° and a load 3 DC lamps, wind speed of 8 m/s worth 8,52 Watts with an angle of attack of 5 ° and a load of 4 DC lamps. While the highest system efficiency value is obtained at a wind speed of 6 m/s worth 4,62 % with an angle of attack of 20 ° and a load of 1 DC lamp, a wind speed of 7 m/s worth 4,218 % with an angle of attack of 0 ° and a load of 3 DC lamps, wind speed 8 m/s worth 4,31 % with an angle of 5 ° and a load of 4 DC lamps.
Variasi Frekuensi pada Electric Rotary Table Berbasis Inverter Guna Menurunkan Cycle Time dan Cacat Produk pada Pengelasan Pipa Kapiler Nailul Ulum, Muhammad Showi; Prasetyo, Nanang Budi; Sai'in, Ali; Su'udy, Ahmad Hamim; Hamid, Abdul; Purnomo, Dwi
Jurnal Rekayasa Mesin Vol. 18 No. 3 (2023): Volume 18, Nomor 3, Desember 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i3.5082

Abstract

Abstract  Cycle Time is a matter that must be considered in production time, a good Cycle Time will support the targets that must be met, even if Cycle Time decreases, production will also increase and company turnover will also Increase. In the case study of PT Arisamandiri Pratama, one of its productions is in the form of AC parts, namely capillary pipes which still use a manual rotating table to rotate the pipe to be welded so that it is unable to reach the target of 800 parts / hour with an average Not Good product of 93 parts / day. The design of an inverter-based electric rotary table can reduce cycle time, but how much frequency will affect the results of a welding, not that the faster the welding process the better, the faster the welding will affect the vibration of the table machine which will have an impact on the welding results. By experiment the inverter frequency setting is expected to get a frequency value with maximum speed but no vibration on the rotation table, the frequency used is between 700 Hz to 1500 Hz with an interval of 100 Hz. The experimental results show that the best frequency is 1000 Hz, with a rotation speed of 16 rpm with a production capacity of 935 parts / hour with Not Good products of 59 parts / day or a decrease in Not Good products by 42.1% per day
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Hamid Adi Chandra Wijaya Aminuyati Arif Rochman Fachrudin, Arif Rochman Astuti, Fina Andika Frida Aulia, Nur Fatowil BAKTIYAR MEI HERMAWAN Budhi Prasetiyo Budhi Prasetyo Dwi Purnomo Eko Siswanto Eko Siswanto F Gatot Sumarno, F Gatot Farika Tono Putri Fina Andika Frida Astuti Gutomo Gutomo H, Yusuf Dewantoro Hermawan, Baktiyar Mei Khoryanton, Ampala Margana Margana Mariani, Dina Mochammad Denny Surindra Nailul Ulum, Muhammad Showi Nanang Apriandi Nur Fatowil Aulia Prasetyo, Nanang Budi Ribka Stephani Rudy Soenoko Rudy Soenoko Rudy Soenoko Safarudin”¬, ”ªYanuar Mahfudz Sai'in, Ali Slamet Priyoatmojo, Slamet Sugeng Irianto Supriyo Supriyo Surindra”¬, ”ªMochamad Denny Surya Aditama Sutanto, Bayu Suwarti Suwarti W, wiwik Purwati Wahyono Wahyono Wiwik Purwati Widyaningsih Yanuar Mahfudz Safarudin Yusuf Dewantoro Herlambang