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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Rekayasa Mesin FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Rekayasa Mesin SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Sebatik Jurnal Serambi Engineering Infotekmesin Specta Journal of Technology Abdimas Universal Risenologi G-Tech : Jurnal Teknologi Terapan Jurnal Rekayasa Energi dan Mekanika Eksergi: Jurnal Teknik Energi AMMA : Jurnal Pengabdian Masyarakat Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Gad Gunawan
Institut Teknologi Kalimantan, Indonesia
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Perancangan dan Simulasi Kompressor Sentrifugal dengan fluida SCO-2 Pada Siklus Brayton Regeneratif Gunawan, Gad; Permana, Diki Ismail
Jurnal Rekayasa Energi dan Mekanika Vol 3, No 2 (2023): JREM
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/JREM.v3i2.112

Abstract

 Di Indonesia, terdapat potensi energi baru dan terbarukan (EBT) yang cukup besar dan beragam. Salah satu sumber energi terbarukan yang tersedia adalah biomassa. Pemanfaatan Siklus Brayton dengan karbon dioksida sebagai fluida kerja pada fase superkritis merupakan salah satu metode pemanfaatan biomassa. Karena karbon dioksida tersedia secara luas di Bumi dan memiliki kepadatan tinggi pada fase superkritis, mesin turbo kompak dapat digunakan. Hal ini memungkinkan desain turbin, kompresor, dan alternator yang kecil. Keuntungan Siklus Brayton adalah penggunaan regenerator untuk pemulihan panas di sisi keluar turbin. Tujuan dari proyek ini adalah untuk membangun kompresor sentrifugal untuk Siklus Regeneratif Brayton. Output bersih kompresor yang diharapkan adalah 40 kW pada 70.000 rpm. Fluida kerja karbon dioksida superkritis (S-CO2) yang digunakan dalam siklus regeneratif Brayton ditujukan untuk temperatur masuk turbin 800 K, temperatur masuk kompresor 320 K. Menurut desain siklus, turbin dan kompresor memiliki daya masing-masing sebesar 113,84 kW dan 60,53 kW. Pendekatan desain geometris yang digunakan sejalan dengan beberapa literatur terkait penelitian. Hasil desain kompresor kemudian disimulasikan oleh computational fluid dynamic (CFD). Berdasarkan temuan pemodelan CFD, kompresor sentrifugal membutuhkan daya sebesar 69,89 kW dengan efisiensi isentropik sebesar 60,03 persen pada kondisi desain. Daya bersih yang dihasilkan sebesar 43,39 kW berdasarkan hasil simulasi CFD. Kata kunci: siklus Brayton, karbon dioksida superkritik, kompreso, perancangan dan simulasi Abstract In Indonesia, there is a substantial and varied potential for new and renewable energy. One of the renewable energy sources that is present practically everywhere is biomass. Utilizing the Brayton Cycle with carbon dioxide as the working fluid in the supercritical phase is one method of utilising biomass. Because carbon dioxide is widely available on Earth and has a high density in the supercritical phase, compact turbomachinery can be used. This allows for the small design of the turbine, compressor, and alternator. The Brayton Cycle's advantage is the employment of a regenerator for heat recovery on the turbine's exit side. The purpose of this project is to build a centrifugal compressor for the Regenerative Brayton Cycle. The intended net output of the compressor is 40 kW at 70,000 rpm. The supercritical carbon dioxide working fluid (S-CO2) used in the regenerative Brayton cycle is intended for turbine inlet temperatures of 800 K, compressor inlet temperatures of 320 K. According to the cycle's design, the turbine and compressor have respective powers of 113.84 kW and 60.53 kW. An approach to geometric design is used that is in line with some of the research-related literature. The outcomes of the compressor design are then subjected to CFD simulations. According to the CFD modeling findings, the centrifugal compressor requires 69.89 kW of power with an isentropic efficiency of 60.03 percent under design conditions. The net power produced is 43.39 kW based on the outcomes of the CFD simulation. keywords ; Brayton cycle, supercritical karbon dioxide, compressor, design and simulation
Analisis Daya Elektrik dan Efisiensi dengan Variasi Debit Air dan Sudut Kemiringan Turbin pada Turbin Ulir Archimedes Dua Sudu Ivan Christofel Hutabarat, Frans; Matarru, Andre Amba; Gunawan, Gad
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.v14i1.1610

Abstract

This study analyzes the effect of water discharge and the angle of inclination of the turbine on electrical power and efficiency using Archimedes screw turbine with two blades. This study aims to determine the effect of water discharge and the angle of inclination of the turbine on the electrical power and efficiency of the two-blade Archimedes screw turbine. The turbine is fed with water at variations of water discharge of 150 l/m, 300 l/m, 450 l/m. And vary angle of inclination of the turbine of 35°, 40°, and 45°. By using the variation of the water discharge that has been mentioned, the electrical power and efficiency obtained are 1,24 W and 9,78 % at a variation of 150 l/m, 2,89 W and 10,77 % at a variation of 300 l/m, and 3,65 W and 9,06 % at a variation of 450 l/m. When varying the angle of inclination, the electrical power and efficiency obtained are 3,33 W and 10,77 % on a slope of 35°, 3,65 W and 10,53 % on a slope of 40°, and 3,15 W and 8,6 % on a variation of 45°.
Lulusan Institut Teknologi Kalimantan Sebelum dan Sesudah Pandemi Covid-19 Nurlaily, Diana; Haliq, Ridhwan; Qalbi A.M, Chaerul; Idhil Ismail, Andi; Gunawan, Gad; Setiorini Sa’adiyah, Devy
AMMA : Jurnal Pengabdian Masyarakat Vol. 2 No. 4 (2023): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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

Abstract

Every year, a program called a "tracer study" is run to collect and analyze data from graduates (a year after graduation). Seeks to guarantee that graduates have good work and submit it on time following university or institute criteria after graduation. Within 1-2 months of filling it out, a data analyst processes the data and validates its accuracy. Data for 10 study programs were collected, and comparisons were made between the graduation years of 2019 and 2020. In 2020, the Covid-19 pandemic started. The Institut Teknologi kalimantan (ITK) was significantly impacted by Covid-19, which led to all work being done online on campus. Evaluation criteria for ITK include the length of time it takes graduates to find employment, their GPA, the nature of their alumni employment, and their reasons for not finding employment one year after graduation. In order to be able to create more qualified alumni, the rate ranking approach will help examine the success of the study program and provide an evaluation of the study program. This paper's two lowest-ranking disciplines are electrical engineering, materials engineering, and metallurgy..
Co-Authors Achmad Farizul Hasmi Agung Prabowo Al Wafi, Rifqi ALDO, JEFRI Alfi Nandar Am, Chaerul Qalbi Amba Matarru, Andre Andre Amba Matarru Anzan Aulia Yahya Bima Jagad Saksana, Febrillian Chandra Suryani Rahendaputri Christandi Batubara, Yongki Cloudiandy Mukti Kimana Devy Setiorini Sa’adiyah Dicky Ocza Tama Djafar, Alfian Faadhilah Faadhilah Fahrizul Hasmi, Achmad Farhan, Alfandy Muhammad Felita Tsany Pandya Frans Ivan Christofel Hutabarat Giyantara, Andhika Gofind Hasoloan Haliq, Ridhwan Happy Aprilia Hariz Dedy Sayogi, Muhammad Haryono, Hadhimas Dwi Hasiholan Lumban Tobing, Kevin Hasyer Kamal Baron Wicaksono Hendi Prasetya, Bagas Hosea, Richard Marbun Idhil Ismail, Andi Ivan Christofel Hutabarat, Frans Kurnia Dwi Artika, Kurnia Dwi Kurniawati, Diniar Mungil Lantiunga Celine Agvi Sanchia Linda Mahmudi Syahlie, Razif Manta, Faisal Maulana Bayu Iqmal Muhammad Irwan Gunawan Muhammad Syaiful Umara Mungil Kurniawati, Diniar Naufal Akmal Nurlaily, Diana Oddy Adam Orientius Paseru, Ricko Parsaulian Lobo Silalahi, Yonathan Permana, Diki Ismail Pradisty, Daffa Kurnia Qalbi A.M, Chaerul Qalbi AM, Chaerul Rachman, Fiqriza Hadista Rahma Sarita Dewi Ridhwan Haliq Rifqi Al Wafi Rijal Surya Rahmany rizianiza, illa Rizqi Fahrezi, Dimas Rukayya Syakira Setiorini Sa’adiyah, Devy Stofani, Dhio Suanggana, Doddy Suardi Suardi Sujana, I Made Ivan Wiyarta Cakra Susilo, Rizky Dwi Syaiful Umara, Muhammad Tina Febriana Usman Ali Widyantama, Fakhrul Yun Tonce Kusuma Priyanto