Article Per Year (5 Year)
p-Index From 2020 - 2025
1.879
P-Index
This Author published in this journals
All Journal Rotasi FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi VANOS Journal of Mechanical Engineering Education R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Teknika Journal of Renewable Energy and Mechanics Eksergi: Jurnal Teknik Energi Trends in Mechanical Engineering Research Al-Ijtimā: Jurnal Pengabdian Kepada Masyarakat
Ni Ketut Caturwati, Ni Ketut
Universitas Sultan Ageng Tirtayasa
Religion Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
PEMBUATAN CYCLONE BURNER DENGAN BAHAN BAKAR SERBUK BATUBARA DENGAN KAPASITAS 76 kg/jam Imron Rosyadi; Ni Ketut Caturwati; Fahrizal Pradana Putra
Jurnal Teknika Vol 10, No 2 (2014): Edisi November 2014
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v10i2.6669

Abstract

Proses konversi batubara menjadi kalor terjadi di burner yang terletak di furnance. Jenis pembakaran batubara pada PLTU bermacam–macam, yaitu: grate, fuidized bed, dan pulverized coal combustion. Cyclone Burner adalah burner yang prinsip kerjanya menggunakan jenis pulverized coal combustion. Burner ini menggunakan bahan bakar batubara bubuk (pulverized coal) yang memiliki ukuran 50-200 mesh. Penelitian ini bertujuan untuk merancang cyclone burner yang dapat mengumpankan bahan bakar secara kontinu dan menghasilkan temperature pembakaran yang tinggi. Hasil rancangan yang dibuat , burner terdiri air blower, screw feeder, system gas burner dan sebuah inverter. Dengan komponen tersebut alat dapat berfungsi dengan baik ditandai dengan tercapainya parameter prestasi atau unjuk kerja yang diinginkan yaitu temperature dan panjang api. Temperatur maksimal yang dihasilkan yaitu 1014°C. Titik ini dicapai pada massa aliran bahan bakar paling besar (0,0357 kg/s). Panjang api optimum dihasilkan dari masukan batubara sebesar 0,0357 kg/s dihasilkan lidah api sekitar 58,49 cm.
PENGARUH TEMPERATUR DAN WAKTU PYROLISIS TERHADAP NILAI KALOR BRIKET TEMPURUNG KELAPA SAWIT Ni Ketut Caturwati; Endang Suhendi; Eko Prasetyo
Jurnal Teknika Vol 10, No 2 (2014): Edisi November 2014
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v10i2.6677

Abstract

Sumber energi utama yang selama ini dipergunakan dalam kehidupan manusia merupakan sumber energi yang berasal dari bahan bakar fosil, dimana harga bahan bakar ini semakin mahal akibat cadangan energi yang kian terbatas. Untuk itu berbagai upaya dilakukan dalam mencari energi alternative yang mungkin dapat dipergunakan sebagai pengganti energi fosil. Pemanfaatan limbah seperti tempurung kelapa sawit telah mulai dilakukan dengan membuatnya menjadi briket sehingga memiliki nilai kalor yang cukup besar sebagai bahan bakar alternatif pengganti batubara atau bahan bakar lain seperti minyak dan gas. Dalam penelitian ini dilakukan proses pyrolisis terhadap tempurung kelapa sawit dengan variasi temperatur pirolisis : 200 °C, 300 °C, 350 °C dan 400 °C dengan waktu pirolisis selama : 1 jam, 1,5 jam dan 2 Jam. Padatan (Char) hasil pyrolisis dibuat sebagai bahan baku briket. Dilakukan pengujian nilai kalor dari briket yang dihasilkan melalui proses pyrolisis dengan variasi temperatur dan waktu proses. Hasil pengujian nilai kalor briket menunjukkan proses pyrolisis dengan temperatur 400 °C serta waktu proses 1 jam menghasilkan nilai kalor tertinggi sebesar 7070 cal/gram. Nilai ini mendekati nilai kalor batubara berkualitas (antrasit) yang memiliki nilai kalor 31 kJ/gr atau setara dengan 7405 cal/gram.
The Effect of Zeolite Catalysis Size on Biodiesel Characteristics of Bio-Oil from Tuna Waste Imron Rosyadi; Haryadi Haryadi; Ni Ketut Caturwati; Syahrul Ivandy
VANOS Journal of Mechanical Engineering Education Vol 6, No 1 (2021)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/vanos.v6i1.9269

Abstract

Indonesia is a country with the third largest tuna production in the world. Fish oil as a fishery product processing waste is a potential material for making biodiesel because it has a high fat content. In this research, biodiesel was made from bio-oil from tuna waste through esterification and transesterification processes at 60°C, stirring speed 360 rpm with a reaction time of 2 hours. The purpose of this study was to determine the levels of Free Fatty Acid (FFA) contained in bio-oil from tuna waste and to determine the effect of the size of the natural zeolite catalyst in the transesterification process on the characteristics of the biodiesel produced. The variables used were the size of the zeolite catalyst 10 - 20, 30 - 40, 50 - 60, 70 - 80, 100 - 120 mesh. From the research results, it can be concluded that the smaller the zeolite catalyst size, the resulting biodiesel is closer to the biodiesel standard and the size of 100-120 mesh which is very close to the SNI 7182: 2015 biodiesel standard with a density value of 849.6 kg/m3, kinematic viscosity 3,413 cSt, moisture content. 0%, acid number 1.10 mg.KOH /gr, flash point 75 ° C, calorific value 8.240 Cal/gr.
(Performance of Gas Turbine Cooling System (Radiator) at PLTGU XYZ against Environmental Air Temperature) Ni Ketut Caturwati; Yusvardi Yusuf; Muhammad Ilham Al Faiz
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 5 No 1 (2020): Juni 2020
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v5i1.889

Abstract

The heat exchanger is an important component in the gas and steam power plant (PLTGU) industry. One of the most important heat exchangers in gas turbine cooling systems is the gas turbine radiator. The gas turbine radiator functions to cool the cooling water, which circulated to various components of the gas turbine by using environmental air as the cooling medium. The purpose of this study was to determine the effect of environmental temperature on the performance of gas turbine radiators and to compare operational data in 2017 with operational data when the study conducted in 2019. Data collected for 3 days with 2-3 hour intervals. Data processing and analysis shows that the higher the ambient temperature, the higher the radiator effectiveness value. Data in 2017 shows the highest average value of effectiveness obtained at an ambient air temperature of 35 ˚C of 71,274%. Meanwhile, data in 2019 shows the highest average value of effectiveness at an ambient air temperature of 35 ˚C of 58,859%. Thus, the average effectiveness value of gas turbine radiators has decreased by 12,415% from 2017 to 2019
Effect Of Water Content On Characteristics Fuel From The Municipal Solid Waste Through The Pyrolysis Process Imron Rosyadi; Ni Ketut Caturwati; Ahmad Fauzi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 5 No 2 (2020): Desember 2020
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v5i2.974

Abstract

The increase in the population of Indonesia is proportional to the increase in the amount of waste produced. Municipal solid waste (MSW) especially organic waste, can be used as solid fuel by means of the torefaction process. Torefaction is a thermo-chemical heat treatment method for biomass conversion that takes place at a temperature of 200oC to 300oC under conditions of atmospheric pressure and in the absence of oxygen. The purpose of this study was to determine the effect of moisture content on calorific, proximate and ultimate values ​​of torefaction samples using municipal solid waste. Setting the water content in the mixed sample (30% rice + 70% wood) with variations in moisture content of 30%, 40%, and 50%; and rice and wood samples with variations in moisture content of 40% and 50%. The torefaction was carried out at a temperature of 300oC for one hour and inert gas N2. Torefaction products have been tested contain of the calorific value, proximate testing, and ultimate testing. The results obtained were the best calorific value in the rice sample, the moisture content of 40% was 6351.1 cal / g or equivalent to sub-bituminous coal. The proximate and ultimate results of the best heating value are rice samples with 40% moisture content, fixed carbon 62.95%, volatile matter 27.85%, moisture 7.06%, ash 2.14%, carbon 71.85%, hydrogen. 2.80%, nitrogen 3.17%, and sulfur 0.05%. The calorific value calculation method that is almost close to the test results is the Dulong method, with an average error percentage of 1.63%.
Upaya Pemurnian Landfill Biogas Menggunakan Metode Adsroben Steel Wool Muhammad Affan Adhani; Ni Ketut Caturwati; Imron Rosyadi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 6 No 1 (2021): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v6i1.1404

Abstract

Nilai kalor yang dimiliki oleh biogas sangat mempengaruhi lamanya waktu proses pembakaran. Beberapa penelitian telah dilakukan untuk meningkatkan nilai kalor yaitu dengan menurunkan kadar zat pengotor yang terkandung bersama biogas. Dalam penelitian ini dilakukan upaya peningkatan nilai kalor biogas dengan menggunakan steel wool sebagai adsorben dengan variasi massa steel wool (500 gram dan 600 gram) dan variasi laju aliran biogas (1 lpm, 2 lpm, dan 3 lpm). Peningkatan nilai kalor biogas sebelum dan sesudah pemurnian ditentukan dengan water heating test. Hasil penelitian menunjukan peningkatan nilai kalor diperoleh pada filter dengan massa adsorben 600 gr dan laju aliran biogas 1 lpm, dimana nilai kalor meningkat sebesar 36.19%. Sedangkan filter dengan 500 gr steel wool adsroben dan laju aliran biogas 3 lpm, menghasilkan peningkatan nilai kalor terendah yaitu sebesar 4.46%. Hasil eksperimen menunjukan peningkatan nilai kalor semakin tinggi jika laju aliran biogas makin rendah melalui kolom adsorben dengan massa steel wool yang semakin tinggi.
Kapasitas Penyimpan Daya Yang Dibutuhkan Photovoltaic 100 Wp Monocrystalline Yang Dioperasikan Di Daerah Cilegon-Banten Ni Ketut Caturwati; Romi Wiryadinata; Firda Andini
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.5199

Abstract

Pemanfaatan energy surya di daerah remote area adalah suatu hal yang makin hari makin dibutuhkan mengingat makin banyak peralatan yang dibutuhkan manusia yang menggunakan energy listrik dalam pengoperasiannya, sebaliknya tidak semua daerah yang memiliki suplai jaringan listrik, misalnya daerah laut , pesisir pantai maupun daerah-daerah terpencil lainnya. Indonesia merupakan daerah yang mendapatkan sinar matahari berlimpah sepanjang massa, namun konversi energy surya menjadi energy listrik sangat bergantung pada letak geografis, cuaca dan lingkungan tempat sel surya dioperasikan. Guna mengetahui potensi pembangkitan listrik dengan sel surya dilakukan pengujian dengan menggunakan sel surya monokristalin 100 Wp dengan waktu pengujian dari jam 07.30-16.30 WIB di halaman kampus Fakultas Teknik Cilegon pada  tanggal 20 Mei 2018 – hingga 1 Juli 2018. Hasil pengamatan menunjukkan produksi listrik yang dihasilkan perhari per meter persegi luas permukaan didaerah tersebut mencapai nilai rata-rata 0,69 kWh/hari/m2. Sedangkan nilai maksimum yang mungkin dicapai adalah sebesar 1,062 kWh/hari/m2. Sehingga kebutuhan baterai terpasang untuk menampung produksi DAYA listrik yang dihasilkan perhari adalah baterai 12 V dengan kapasitas 62 Ah.
PENGATURAN WAKTU PRODUKSI BIOGAS DARI LIMBAH PADAT ORGANIK DENGAN AIR LINDI SEBAGAI STARTER DALAM ANAEROBIC DIGESTER UNTUK MENDAPATKAN PRODUKSI YANG KONTINYU Ni Ketut Caturwati; Agung Sudrajat; Heri Haryanto; Mekro Permana Pinem; Reza Reza
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume III Nomor 1, April 2017
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v1i1.1465

Abstract

Terbatasnya sumber energi fosil menuntut upaya pencarian sumber  energi lain khususnya yang bersifat baru dan terbarukan. Salah satu sumber energi yang layak untuk diperhitungkan adalah biogas yang berasal dari sampah padat. Teknik pengolahan sampah padat melalui anaerobik digester dapat dipergunakan untuk menghasilkan sumber energi baru seperti biogas disamping dapat membantu penanganan masalah penumpukan sampah kota.  Dalam penelitian ini digunakan 4 buah digester untuk memproduksi biogas dari sampah organik dengan menggunakan starter dari air lindi dimana selang masa awal produksi dibuat beda 14 hari antara satu digester dengan digester berikutnya. Hasil penelitian menunjukkan masa produksi biogas dengan kandungan gas metana diatas 10 % dihasilkan rata-rata selama 10 hari yaitu hari ke 20 sampai hari ke 30. Untuk itu selang waktu awal produksi hendaknya dibuat 10 hari agar produksi biogas dapat bersifat kontinyu.
Fan Blade Balancing Process on CFM56-5B Engine Airbus A320 using the Trim Balance Method Nugroho, Dimas Augie; Caturwati, Ni Ketut
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 9, Issue 1, April 2023
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.26503

Abstract

Fan unbalance is a condition of imbalance of the fan blades with respect to the axis of play and voltage. This imbalance results in the shaft bearing receiving additional centrifugal force due to unbalanced load. This condition causes excessive vibration that produces noise. Trim Balance is a method to reduce vibration by installing balancing screws of different weights on the fan blades to achieve balanced rotation. Fan trim balance can be performed on vibration sources from FAN /LPC or from LPT as they are located in one axle, thus influencing each other. The unit of vibration measurement used is Mils which shows the maximum deviation shift distance (Displacement), with a value of 1 mils = 0.001 inch, or in microns with a value of 1 μm = 1x10-6 m. According to the Aircraft Maintenance Manual (AMM) instructions, the recommended maximum vibration limit is 2 mils, for some airlines the vibration limit is tightened to 1.0 mils. Based on ISO 20816-2 standard, the recommended vibration value is 2.5 mils, with an operating threshold of 5.3 mils. The Fan Trim Balance process begins with the engine run-up process to obtain engine vibration data. During the run-up process, the EVMU will record vibrations at N1 levels of 64%, 84%, 88%, 92%, and 96%. Once the data is collected, your EV will adjust the position and size of the balance screw, which will then be replaced at the base of the fan blades. After adjustment, the engine re-run-up to review the magnitude of the vibration. The trim balance process will be repeated until the vibration level matches the specified parameters. The ratio of vibration levels before and after the trim balance process on Engine 1 is 1.5 Mils and 0.4 Mils, with a difference of 1.1 Mils, while on Engine 2 is 1.8 Mils and 0.5 Mils, with a difference of 1.3 Mils. In this case, the Airbus A320 aircraft requires two trim balance processes to ensure that the vibration level in the engine meets the feasibility parameters.
21. Pelatihan Penggunaan Aplikasi Menggambar Teknik Berbasis Cad Dalam Meningkatkan Kompetensi Dasar Guru SMK Di Provinsi Banten Syarif Abdullah; Ni Ketut Caturwati; Shofiatul Ula; Imron Rosyadi; Slamet Wiyono; Erny Listijorini; Iman Saefuloh; Yusvardi Yusuf; Miftahul Jannah
Al-Ijtimā': Jurnal Pengabdian Kepada Masyarakat Vol 4 No 1 (2023): Oktober
Publisher : Lembaga Penelitian, Publikasi Ilmiah dan Pengabdian kepada Masyarakat (LP3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53515/aijpkm.v4i1.98

Abstract

One of the basic competencies that Vocational High School (SMK) mechanical engineering teachers must have is being able to draw technically using CAD (Computer Aided Design) based applications. This competency is part of the competency field of study expertise that teachers must have. From the results of observations in the field, it was found that there are still many vocational school teachers in Cilegon City who are still not experts in using CAD-based applications, one of which is SMKS YP Fatahillah 1 Cilegon. As a form of implementation of one of the duties and obligations of the Tri Dharma of Higher Education, the Mechanical Engineering Department of Sultan Ageng Tirtayasa University carries out a community service program, namely training in the use of CAD-based technical drawing applications at SMKS YP Fatahillah 1 Cilegon. This activity was carried out for 3 days and was attended by 24 participants who work as teachers and laboratory assistants at the vocational school. The training method is delivered by lectures, presentations and direct exercises and practice. From this activity, the results showed that there was an increase in the competency of the participants, namely in their ability to draw techniques.
Co-Authors . Angga, . . Haryadi Agung Sudrajad Agung Sudrajat Ahmad Fauzi Alda, Apriyani Aminullah M., Aminullah Aminullah Mawardi Aminullah Mawardi, Aminullah Ana Maulana, Ana Angga Angga Dhimas Satria Dwinanto, Dwinanto Eko Prasetyo Endang Suhendi, Endang Erny Listijorini Fahrizal Pradana Putra Firda Andini Haryadi - Haryadi Haryadi Haryadi Haryadi Heri Kusharyanto Imron Rosyadi Imron Rosyadi Imron Rosyadi Mekro Permana Pinem Mekro Permana Pinem Mekro Permana Pinem, Mekro Permana Miftahul Jannah Muhammad Affan Adhani Muhammad Ilham Al Faiz Nugroho, Dimas Augie Pinem, Mekro Permana Reza Reza romi wiryadinata Saefuloh, Iman Salsabila, Unik Hanifah Saputra, Ehsan Tri Shofiatul Ula Slamet Wiyono Syahrul Ivandy Syarif Abdullah Visoka, Cri Kalki Wahyudi, Hadi Wiyono, Slamet Yudi Septian Yudi Septian, Yudi Yusvardi Yusuf