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All Journal Bulletin of Electrical Engineering and Informatics Jurnal Penelitian Chanos Chanos
Mawardi, Iman
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Mechanical Engineering

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RANCANG BANGUN MICROBUBBLE GENERATOR (MBG) UNTUK MENINGKATKAN OKSIGEN TERLARUT (DO) PADA BUDIDAYA PERIKANAN Pratiwi, Citra Zaskia; Mawardi, Iman; Nugroho, Faizin Adi
Chanos Chanos Vol 20, No 1 (2022): Chanos chanos
Publisher : Politeknik Kelautan dan Perikanan Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.724 KB) | DOI: 10.15578/chanos.v20i1.11160

Abstract

Microbubble generator (MBG) is one of aerator that used to enhance dissolved oxygen (DO). Microbubble generator is designed with the diameter of 45 mm for water inlet and reduced to the diameter of 10 mm. The air inlet has the diameter of 18 mm and increased to 45 mm so that it can be equal with the nozzle diameter. The nozzle is the outlet of water and air is reduced to the diameter of 22 mm. The test results showed that the minimum DO measured of 6.3 mg/l, and the maximum of 6.9 mg/l. The increase in DO ranged from 2.3 – 2.7 mg/l. The measured electric motor temperature ranged from 45°C - 55°C for 9 days of testing so that it can be stated that the microbubble generator can be used for 1 cycle of aquaculture. 
Experimental study the performance of a 6-bladed Savonius vertical axis wind turbine using polyvinyl chloride material Siregar, Izhary; Dwi Nugroho, Setyawan; Zaskia Pratiwi, Citra; Mawardi, Iman; Jibril, Ahmad; Suhadi, Suhadi
Bulletin of Electrical Engineering and Informatics Vol 13, No 6: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v13i6.7550

Abstract

The Savonius U type wind turbine is a vertical axis turbine that can operate at low wind speeds. In general, the performance of this turbine is influenced by several factors, one of which is the shape of the turbine blade. This research aims to test the design results of a 6 blade Savonius turbine with a blade length of 50 cm made from polyvinyl chloride (PVC) by varying the dimensions of the blade diameter. The variables that vary between blade length and blade diameter are D/L=0.10, D/L=0.13, D/L=0.18, and D/L=0.20. The aim of this research is to determine the effect of variations in the parameters above on turbine rotation and the electrical power produced in a direct current (DC) generator at each variation in wind speed. From the research results, it is known that the trend graph of the relationship between turbine rotation and wind speed has a linear correlation. In simple terms, this turbine can be applied to DC voltage loads such as lighting using light emitting diode (LED) lamps with a maximum power capacity of ± 16 watts, while the overall efficiency (OE) is 50.25%.
ANALISA PERBANDINGAN PENGARUH HEATER TERHADAP PROSES DEFROST PADA EVAPORATOR Ramadhan, Sultan Rafliansyah; Mawardi, Iman; Suprakto, Bambang
Chanos Chanos Vol 22, No 2 (2024): CHANOS CHANOS
Publisher : Politeknik Kelautan dan Perikanan Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/chanos.v22i2.15562

Abstract

Evaporator is one of the main components in the refrigeration system that functions to absorb heat from the cold room (cold storage) to maintain the temperature according to needs. This study aims to analyze the comparative effect of using a heater on the evaporator on electricity costs, evaporator conditions, cold storage temperatures, and evaporator maintenance. The comparison is focused on Evaporator 1 (inactive heater) with Evaporator 2 (active heater). The results showed that Evaporator 1 experienced a temperature increase of 0.7oC with a time of 18 minutes, while Evaporator 2 experienced an increase of 0.3oC with a time of 14,33 minutes. Likewise, the return to normal temperature, Evaporator 1 took 16 minutes, while Evaporator 2 only took 12.5 minutes. The time required also affects the operational costs during the defrost process until it returns to normal temperature with the calculation of electricity consumption on the defrost water pump, heater, evaporator, evaporator fan motor, and compressor. The operational cost of Evaporator 1 is Rp. 1.319.560 while Evaporator 2 is only Rp. 1.038.019. The accumulation of evaporator ice also affects maintenance. The maintenance cost of Evaporator 1 is Rp. 333.956 while Evaporator 2 is only Rp. 47.708. Evaporator adalah salah satu komponen utama dalam sistem refrigerasi yang berfungsi menyerap panas dari ruangan dingin (cold storage) untuk menjaga suhu sesuai dengan kebutuhan. Dalam proses operasionalnya, pembentukan es pada evaporator dapat mempengaruhi suhu cold storage, sehingga dengan adanya metode defrost di evaporator tetap stabil. Penelitian ini bertujuan untuk menganalisis perbandingan pengaruh penggunaan heater pada evaporator terhadap biaya listrik, kondisi evaporator, suhu cold storage, dan pemeliharaan evaporator. Perbandingan difokuskan pada Evaporator 1 (heater tidak aktif) dengan Evaporator 2 (heater aktif). Hasil penelitian menunjukkan bahwa Evaporator 1 mengalami kenaikan suhu 0,7oC dengan waktu 18 menit, sedangkan Evaporator 2 mengalami kenaikan 0,3oC dengan waktu 14,33 menit. Begitu juga kembalinya ke suhu normal, Evaporator 1 membutuhkan waktu 16 menit, sedangkan Evaporator 2 hanya 12,5 menit. Waktu yang diperlukan tersebut juga berpengaruh pada biaya operasional selama proses defrost sampai kembalinya ke suhu normal dengan perhitungan konsumsi listrik pada pompa air defrost, heater, evaporator, motor kipas evaporator, dan kompresor. Biaya operasional Evaporator 1 sebanyak Rp. 1.319.560 sedangkan Evaporator 2 hanya Rp. 1.038.019. Penumpukan es evaporator juga berpengaruh pada pemeliharaan. Biaya pemeliharaan Evaporator 1 sebanyak Rp. 333.956 sedangkan Evaporator 2 hanya Rp. 47.708.
ANALISA TORSI MENGGUNAKAN PERBANDINGAN MASUKAN DAYA LISTRIK PADA AERATOR PADDLE WHEEL DENGAN TRANSMISI MENGGUNAKAN RANTAI SPROKET, GEARBOX PABRIKAN DAN GEARBOX RODA GIGI LURUS Mawardi, Iman; Purwanto, Agus; Siregar, Izhary; Dwi Nugroho, Setyawan
Chanos Chanos Vol 22, No 2 (2024): CHANOS CHANOS
Publisher : Politeknik Kelautan dan Perikanan Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/chanos.v22i2.15477

Abstract

The paddle wheel type aerator is a popular aerator used in aquaculture to increase dissolved oxygen (DO) levels. The paddle wheel aerator uses a transmission to adjust the rotation of the electric motor so that the paddle wheel can rotate at a certain speed. Several types of transmission have been used, namely using sprocket chains, factory gearboxes and straight gear gearboxes. In this research, torque analysis was carried out using a comparison of electrical power input to calculate the mechanical losses of the types of transmission used, so that one can find the type of transmission that has the lowest losses in the paddle wheel aerator application. The test results show that the sprocket chain transmission has a mechanical loss of 0.28 Nm, while the factory gearbox is 0.21 Nm and the lowest is the straight gear gearbox which has a mechanical loss of only 0.01 Nm so the development of a paddle wheel aerator transmission using a straight gear transmission is a brilliant idea to develop.Aerator jenis paddle wheel merupakan aerator yang popular digunakan pada budidaya perikanan untuk meningkatkan kadar oksigen terlarut (DO). Aerator paddle wheel memanfaatkan transmisi untuk menyesuaikan putaran motor listrik sehingga roda kincir dapat berputar dengan kecepatan tertentu. Beberapa jenis transmisi telah digunakan, yakni menggunakan rantai sprocket, gearbox pabrikan dan gearbox roda gigi lurus. Dalam penelitian ini dilakukan analisa torsi menggunakan perbandingan masukan daya listrik untuk menghitung rugi-rugi mekanis dari jenis-jenis transmisi yang digunakan, sehingga dapat menemukan jenis transmisi yang memiliki rugi-rugi paling rendah dalam aplikasi aerator paddle wheel. Hasil pengujian menunjukkan transmisi rantai sprocket memiliki rugi-rugi mekanis sebesar 0,28 Nm, sementara gearbox pabrikan sebesar 0,21 Nm dan yang terendah yakni gearbox roda gigi lurus yang memiliki rugi-rugi mekanis hanya 0,01 Nm sehingga pengembangan transmisi aerator paddle wheel menggunakan transmisi roda gigi lurus merupakan ide yang patut untuk dikembangkan.
Co-Authors AGUS PURWANTO Dwi Nugroho, Setyawan Jibril, Ahmad Nugroho, Faizin Adi Pratiwi, Citra Zaskia Ramadhan, Sultan Rafliansyah Siregar, Izhary Suhadi Suhadi Suprakto, Bambang Zaskia Pratiwi, Citra