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All Journal BANGUN REKAPRIMA Turbo : Jurnal Program Studi Teknik Mesin Infotekmesin Majalah Ilmiah Gema Maritim Accurate: Journal of Mechanical Engineering and Science Jurnal Polimesin
Kurniawan, Ipung
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Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Journal : Infotekmesin

 1 
Simulasi variasi sudut lidah volute casing terhadap kecepatan aliran udara pada blower tipe forward blade Syafa‘at, Husna Endry; Kurniawan, Ipung; Ariawan, Radhi; Santoso, Agus
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.v16i2.2546

Abstract

Optimization of volute design is essential for the performance of centrifugal pumps and blowers. This study investigates the effect of volute tongue angle variation on air velocity and flow rate in volute casing design using flow simulations. The volute design was tested with tongue angles of 15°, 30°, 45°, 60°, and 75°, based on theoretical equations of flow rate and volute radius. Simulation results indicated that increasing the volute tongue angle enlarges the volute cross-sectional area. Generally, this enlargement decreases air velocity but increases the flow rate. A 75° tongue angle produced the highest flow rate of 4.860 m³/s, while the highest velocity, 21.35 m/s, was observed at 15°. This behavior aligns with the principle of mass conservation, where a larger cross-sectional area leads to reduced fluid velocity. These findings suggest that volute designs with larger tongue angles can optimize the flow capacity.
Perancangan dan Simulasi Penggunaan Pembangkit Listrik Tenaga Surya Atap On Grid Pada Gedung Kuliah dan Laboratorium Supriyono, Supriyono; Purwiyanto, Purwiyanto; Riyanto, Sugeng Dwi; Kurniawan, Ipung
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.v16i2.2800

Abstract

Indonesia has a large solar energy potential, with an average radiation of 4.5-4.8 kWh/m² every day. Politeknik Negeri Cilacap (PNC) can take advantage of this opportunity to develop a Solar Power Plant. This study examines the possibility of building an on-grid rooftop solar power plant in the Department of Electrical and Mechatronics Engineering. This study uses Homer to simulate the solar power plant design. The parameters discussed are total energy production (kWh/year), renewable fraction, net present cost/NPC (Rp) which is all costs used in construction, both in installation and operation of the solar power plant and Cost of energy/COE (Rp/kWh) which is the cost incurred to produce electrical energy per 1 kWh. The results of the study include an average solar energy at PNC of 4.66 kWh/m²/day. Based on Homer's simulation results, the total energy generated by the solar power plant is 149,056 kWh/year, with 68,599 kWh/year from photovoltaic and 80,457 kWh/year from the PLN grid. The renewable fraction is 44.8%. The NPC is Rp 1,880,000,000, and the CoE is Rp 1,000/kWh.
Rancang Bangun dan Uji Kinerja Mesin Oil Skimmer Disk Type Berdasarkan Volume dan Kadar Ph Pada Cairan Pendingin Mesin CNC Milling Hurco Seri Vm10 Kurniawan, Ipung; Pujono; Pribad, Joko Setia Pribad; Santoso, Agus; Ibrahim, Ariq Rafi; Adha, Hilmam Zulmi
Infotekmesin Vol 17 No 1 (2026): Infotekmesin: Januari 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v17i1.2953

Abstract

Modern machining processes heavily rely on liquid coolants to extend the life of cutting tools; however, water-soluble coolants are susceptible to oil contamination, which degrades their quality. This research aims to design the form and details of a disc-type oil skimmer machine, perform the necessary machine element calculations, and test the results. The design process utilizes the VDI 2222 systematic approach with the aid of Autodesk Inventor 2025 software, supported by literature and field studies. The calculation results indicate a required motor power of 0.042 HP, a minimum shaft diameter of 7.2 mm, and a dynamic bearing load of 5.868 N. The frame strength analysis also ensures safety, with a maximum stress of 15.19 N/mm², well below the allowable limit of 79,2 N/mm². In conclusion, this design yields a viable and safe oil skimmer for implementation on the Hurco VM10 series CNC Milling machine, complete with detailed working drawings and an optimal speed of 80 rpm for separating oil from the coolant.
Co-Authors Adha, Hilmam Zulmi Agung Firmansyah Agus Santoso Agus Santoso AP, Bayuseno Dian Prabowo Ibrahim, Ariq Rafi Joko Setia Pribadi Mohammad Nurhilal Muhamad Yusuf Nur Akhlis Sarihidaya Laksana, Nur Akhlis Sarihidaya Pribad, Joko Setia Pribad Pribadi, Joko Setia Probo Hardini Pujono Pujono, Pujono Purwiyanto, Purwiyanto Radhi Ariawan Setia Pribadi, Joko Sodikin, Jenal Sugeng Dwi Riyanto Supriyono Supriyono Syafa‘at, Husna Endry Tarigan, Roy Aries Permana