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All Journal Rekayasa Mesin International Journal of Education, Science, Technology, and Engineering (IJESTE) Jurnal Abdimas Bina Bangsa Jurnal Pengabdian Masyarakat Charitas Cylinder : Jurnal Ilmiah Teknik Mesin
Tobing, Sheila
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Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Journal : Cylinder : Jurnal Ilmiah Teknik Mesin

 1 
Analisis Pengaruh Modifikasi Pressure Reducing Valve Terhadap Range Pressure Drop Aliran Uap Anwar, Kelly; Gunawan, Harjadi; Tobing, Sheila
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 1 (2024): APRIL 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i1.5483

Abstract

Pressure Reducing Valve (PRV) is a control valve designed to reduce upstream pressure to downstream pressure on fluid flow. When operating, a PRV is in an equilibrium condition because of the forces acting on it, such as fluid resultant force, membrane force, and spring force. On some working conditions, a PRV cannot operate because the equilibrium is unattainable by the spring that deflects further than the maximum allowable limit and unable to produce force balancing out other forces. Therefore, a modification on the spring wire diameter from 17 mm to 20 mm is conducted without altering other PRV parts dimension and geometry. The modified spring will be analysed through analytical analysis and simulation analysis with Ansys software. On the same working conditions with the enlargement of the spring wire diameter, the deflection that once was 99,28 mm decreases to 42,64 mm and does not exceed the maximum limit at 74,375 mm so the PRV can operate on said condition and the pressure drop range increases from 7 bar to 9 bar.
Integrasi Plts pada Sistem Kelistrikan untuk Penyediaan Listrik di Desa Tanjung Kelumpang, Belitung Timur (Area Geosite Pantai Punai, Kawasan Geopark Belitung) Suryanti, Irma; Tobing, Sheila
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 2 (2024): OKTOBER 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i2.5647

Abstract

This research was carried out by developing simulation scenario for the integration of solar power plant into the existing electricity system in Tanjung Kelumpang Village (Punai Beach Area, Belitung Geopark Global Network) with an electricity load pattern at the location in the amount of 24.000 kWh/ day using HOMER software. The simulation scenario prepared is integrating solar power plant with 30% of the existing diesel power plant capacity (the diesel power plant capacity entering the system is 540 kW) and the PLN electricity network. The simulation and optimization results show that integrating solar power plant with 30% of the existing diesel power plant capacity and the PLN electricity network produces the most optimal value, with the number of Levelized Cost of Electricity (LCOE) is Rp 1.173/ kWh and Net Present Cost (NPC) is Rp 1.788/ kWh. The integration of solar power plant into the existing electricity system of Tanjung Kelumpang village can be a solution for providing clean, environmentally friendly energy at competitive rates. The development direction of Bangka Belitung Province is currently experiencing a transition from mining based economy to sustainable tourism based economy. The integration of renewable energy generation from solar power plant in geosite area is considered to be able to create multiplier effects to achieve sustainable development goals in tourism sector. A number of methods must be encouraged and accelerated to achieve this, such as policy making, providing infrastructure, increasing human resource competency, cooperation and investment pattern, as well as active community involvement in the process.
Kaji Eksperimental Pengaruh Jumlah dan Interval Pembuluh Sayap Di Arah Chord Terhadap Propulsi Sayap Lentur Putraandari, Fauzan; Tobing, Sheila
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 5 No 1 (2019): APRIL 2019
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Selama dua dekade terakhir, telah banyak studi mengenai manfaat sayap membran lentur terhadap kinerja aerodinamika untuk pengembangan Micro Air Vehicles (MAVs). Studi eksperimental kali ini dilakukan untuk mengeksplorasi manfaat pengaruh profil sayap lentur terhadap kinerja aerodinamika pada bilangan Reynolds sebesar = 50000. Pengujian pengaruh kelenturan sayap dilakukan dengan cara menguji berbagai jumlah dan interval antar pembuluh sayap di arah chord. Pengujian untuk mengetahui kinerja aerodinamika pada setiap variasi profil sayap lentur dilakukan dengan menggunakan terowongan angin. Kinerja aerodinamika dapat diketahui dengan mengukur gaya angkat dan gaya hambat pada setiap variasi profil sayap lentur terhadap berbagai sudut serang. Hasil pengukuran menunjukan bahwa profil sayap dengan distribusi interval tidak seragam, terutama lebih padat di daerah dekatdengan pangkal sayap (root), akan memberikan manfaat kinerja aerodinamika yang signifikan. Pengukuran menunjukan bahwasayap dengan pembuluh yang lebih padat di daerah root dapat meningkatkan leading edge vortices (LEVs) dan membentuk pusaran udara di daerah tepi sayap (tip vortices) yang berguna untuk menyeimbangkan beban aerodinamika pada permukaan sayap atas dan bawah.
Co-Authors Anwar, Kelly Basoeki, Prita Dewi Gunawan, Harjadi Irma Suryanti Marten Darmawan Nahak, Demetrio Pote, Juan William Putraandari, Fauzan Rawikara, Seno Sahisnu Soewono, Arka Dwinanda Soputra, Steven Wiliam Warto