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All Journal Infotekmesin Prosiding Seminar Hasil Penelitian dan Pengabdian Kepada Masyarakat
Aji Girawan, Bayu
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Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Environmental Science Mechanical Engineering

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PENGARUH PENAMBAHAN SACCHAROMYCESS CEREVICEAE TERHADAP VARIASI NPK DIDALAM PENINGKATAN NILAI KADAR BIOETANOL NIRA NIPAH (NYPA FRUTICANS) Satriawan, Dodi; Perdinan Lumbantoruan, Yoel; Aji Girawan, Bayu
Sehati Abdimas Vol 6 No 1 (2023): Prosiding Sehati Abdimas 2023
Publisher : PPPM POLTESA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/sehati_abdimas.v6i1.659

Abstract

Tujuan dari penelitian ini untuk meningkatkan kadar bioethanol yang dihasilkan oleh nira nipah (Nypa fruticans) dari penambahan Saccharomycess Cereviceae dan penambahan NPK. Pembuatan bioetanol dari nira nipah dimulai dengan menambahkan Saccharomycess Cereviceae dengan variasi 1; 2,5; dan 5% (%v/v) kedalam 5 liter nira nipah. Penambahan NPK 0,2 (%w/v) dan urea 0,2% (%w/v). Proses fermentasi dilakukan selama lima hari. Analisis yang dilakukan berupa analisis kadar gula dan kadar bioethanol. Didapatkan hasil bahwa semakin lama waktu fermentasi akan semakin menurun nilai kadar gulanya, sedangkan semakin lama waktu fermentasi maka akan meningkatkan nilai produksi kadar bioetanolnya. Didapatkan nilai kadar bioethanol terbaik pada penambahan Saccharomycess Cereviceae 5% dan penambahan NPK 0,6%.
Desain dan Analisis Karakteristik Pegas Koil Sistem Suspensi Belakang untuk Kendaraan Ringan Sepeda Motor Listrik Sarihidaya Laksana, Nur Akhlis; Aji Girawan, Bayu; Setia Pribadi, Joko
Infotekmesin Vol 13 No 1 (2022): Infotekmesin: Januari, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i1.908

Abstract

The vehicle's suspension system have function to reduce vibrations from the shock between the wheels and the road. Previous research discussed the simulation of spring loading with material variations. This research focuses on the design and analysis of springs that will be used in Electric Motorbikes (SEMOLI). Spring analysis between cast stainless steels and carbon stainless steels is done by calculating displacement transmissibility. The analytical method used is the SDOF harmonic method to determine the system response. The results of the analysis are considered for the selection of springs by determining the displacement transmissibility and the response of the suspension system. The results of the analysis of the characteristics of cast stainless steels and carbon stainless steels for active springs 6, 7, and 8 at speeds of 10 km/hour, 20 km/hour, 40 km/hour, 80 km/hour showed a decrease in displacement transmissibility. Characteristics for stainless steel material at steady state condition with active spring 6 is 0.3 second, while 7 and 8 are 0.25 second. The characteristics of overshoot for cast stainless steel material with active spring 6 are 55.3%, 7 are 52.7% and 8 are 50.3%. Stainless steel material has the characteristics of overshoot on active spring 6 is 55.8%, active spring 7 is 53.3%, and active spring 8 is 51 From the characteristic analysis, the best material obtained is cast stainless steel with a smaller displacement value dan good respon.
Analisis Performa PLTS Off Grid Untuk Sistem Desalinasi Metode Osmosis Terbalik Supriyono, Supriyono; Purwiyanto, Purwiyanto; Aji Girawan, Bayu; Setia Pribadi, Joko; Santoso, Agus
Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i1.1651

Abstract

Bondan Hamlet is a hamlet in Kampung Laut District, Cilacap. One of the community's problems is the lack of clean water and the PLN electricity network. In 2020, a desalination facility named Sidesi Mas will be built in Bondan Hamlet with a capacity of 240 liters/hour and using the reverse osmosis principle. The energy source for desalination uses a solar power plant (PLTS). Desalination management requires economic analysis, especially in determining the selling price of desalinated water. The cost of producing desalinated water can be calculated using the Cost of energy (CoE) value of the PLTS or the costs incurred to produce electrical energy per 1 kWh. To get the PLTS CoE, this article discusses a simulation to analyze the performance of PLTS desalination systems with Homer software. Homer performs analytical calculations based on a location input, solar energy potential, capacity, and costs of PLTS components as well as electrical load data. The simulation results show that PLTS energy production is 535 kWh/year, the CoE value is IDR 21,975/kWh and the production cost for producing clean water is IDR 183.13/liter.
Rancang Bangun Sepeda Motor Listrik (SEMOLI) Generasi 3 Laksana, Nur Akhlis Sarihidaya; Aji Girawan, Bayu; Ariawan, Radhi; Rahman Sari Nurhidayat, Akhlis
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2791

Abstract

In this research, the design process of the third generation of electric motorcycles (SEMOLI) is carried out, which is a development of the previous generation with the aim of developing electric vehicles using gearboxes, in order to add acceleration ratios to adjust to road or terrain conditions. as an alternative solution to the increase in fuel and the depletion of fossil energy sources. The results of this study support the national electric vehicle conversion program. The results can be used for the development of the automotive industry. The method used is research and development (R&D). The design process begins by calculating the design requirements for power transfer and frames. The frame simulation process produces a maximum stress of 149 MPa with a allowable stress of 163.2 MPa with a displacement of 2 mm. It is said to be safe to continue the manufacturing and fabrication process. The vehicle trial process produces a maximum vehicle speed of 55 km/h with an average energy consumption of 27 watts/hour.
Co-Authors Agus Santoso Dodi Satriawan, Dodi Nur Akhlis Sarihidaya Laksana, Nur Akhlis Sarihidaya Perdinan Lumbantoruan, Yoel Purwiyanto, Purwiyanto Radhi Ariawan Rahman Sari Nurhidayat, Akhlis Sarihidaya Laksana, Nur Akhlis Setia Pribadi, Joko Supriyono Supriyono