Article Per Year (5 Year)
p-Index From 2021 - 2026
5.239
P-Index
This Author published in this journals
All Journal Signifikan : Jurnal Ilmu Ekonomi JURNAL ECONOMIA Prosiding Seminas Competitive Advantage JEJAK Trikonomika: Jurnal Ekonomi Media Ekonomi dan Manajemen Journal of Economics, Business, & Accountancy Ventura Rekayasa Mesin Journal of Engineering and Management in Industrial System ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan Walisongo: Jurnal Penelitian Sosial Keagamaan Jurnal Riset Manajemen dan Bisnis (JRMB) Fakultas Ekonomi UNIAT Jurnal Akuntansi dan Ekonomika International Conferences SDGs 2030 Challenges and Solutions Jurnal Surya Masyarakat Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Jurnal Teknologi Terapan LOYALITAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Mesin Indonesia Jurnal ABDINUS : Jurnal Pengabdian Nusantara Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Surya Masyarakat Muttaqien; Indonesian Journal of Multidiciplinary Islamic Studies International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Etihad: Journal of Islamic Banking and Finance Wahana Pedagogika: Jurnal Ilmiah Pendidikan dan Pembelajaran Jurnal Ekuilibrium PAPUMA: Journal of Comunnity Services IJABAH: Indonesian Journal of Sharia Economics Business and Halal Studies
Lilis Yuliati
Departement Of Mechanical Engineering Brawijaya University, Malang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

Published : 63 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 63 Documents
Search

 1   2   3   4   5 
Pengaruh Variasi Arah Aliran Udara pada Stove terhadap Karak-teristik Pembakaran Wood Pellet Yuliati, Lilis; Simanungkalit, David
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.24

Abstract

This research was conducted to investigate the effect of inlet airflow direction on the combustion characteristics of a wood pellet stove. The direction of the airflow into the wood pellet stove is varied for four methods, namely inlet I, inlet II, inlet III, and inlet IV. At inlets, I, II, and III air is injected into the plenum in the radial direction with the injection points at r = -8, 0, and 8 cm respectively, whereas at inlet IV the direction of airflow into the plenum is in the axial direction with the injection point at r = 0. The combustion characteristics were observed in the wood pellet stove with a continuous fuel feeding system. The combustion characteristics investigated in this research consist of flame visualization, flame temperature, combustion rate, and the efficiency of the wood pellet stove. The results showed that wood pellet stoves with inlet IV had a lower combustion rate and flame height, however, this stove indicates a higher flame temperature and stove efficiency. Air entrance through the inlet IV induces most of the airflow to enter the combustion chamber through the primary channel, compared to that through the secondary and tertiary channels. The primary airflow through the wood pellet encourages a better devolatilization and combustion process. These conditions conduce the flame dimension which is a zone where the combustion reaction occurs is smaller with a higher flame temperature, due to higher volumetric heat release rate. This matter results in better heat transfer from the flame to the test fluid and higher stove efficiency.
Pengaruh Panjang Rantai Karbon dan Derajat Ketidakjenuhan terhadap Karakteristik Pembakaran Droplet Asam Lemak Tunggal Ibadurrohman, Ibrahim Ahmad; Hamidi, Nurkholis; Yuliati, Lilis
Jurnal Rekayasa Mesin Vol 12, No 2 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.02.11

Abstract

This study aimed to investigate the effect of the different carbon chain lengths and the degree of unsaturation of six fatty acids as the constituent of vegetable oils. The droplet combustion was carried out at an ambient temperature and atmospheric pressure. The variation in the carbon chain length and the degree of unsaturation resulted in different physical and chemical properties of the fuel, which affect the droplet combustion characteristics. The increase of the carbon chain length results in longer ignition delay times and shorter burning durations, as well as higher droplet temperatures, burning rate constant, and specific power output. Conversely, an increase in the degree of unsaturation with the presence of double bond results in shorter ignition delay and longer burning duration, as well as higher droplet temperatures, but lower burning rate constant and specific power output. The droplet diameter evolution divides the combustion period into unsteady burning zones and quasi-linear burning zones. The flame dimension of unsaturated fatty acid is higher due to the soot formation at the top of the flame. A bluish flame related to the higher oxygen content in the molecule can be observed in saturated fatty acids. The short-chain saturated fatty acid has a large non-luminous zone because they are rich in oxygen. In contrast, the long-chain saturated fatty acid has a narrow non-luminous zone with high flame radiation.
THE INTEGRATION OF OVERALL EQUIPMENT EFFECTIVENESS (OEE) METHOD AND LEAN MANUFACTURING CONCEPT TO IMPROVE PRODUCTION PERFORMANCE (CASE STUDY: FERTILIZER PRODUCER) Adi Yermia Tobe; Denny Widhiyanuriyawan; Lilis Yuliati
Journal of Engineering and Management in Industrial System Vol 5, No 2 (2017)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (596.615 KB) | DOI: 10.21776/ub.jemis.2017.005.02.7

Abstract

High machine downtime and large number of rejected products is still become a big problem for company as a research object in this study. Overall Equipment Effectiveness (OEE) is one of the methods used to measure the effectiveness of a machine with three measurement factors, namely; availability rate, performance rate, and quality rate. The integration of OEE measurement and lean manufacturing analysis method is employed to improve production system in company. The measurement result shows that the value of availability rate is 88.82%, performance rate 93.70%, and quality rate 98.20%; then the OEE values obtained 81.73%. The root cause is investigated by using FMEA (Failure Mode and Effect Analysis) method particularly from the RPN (Risk Priority Number).
PERAWATAN HOIST CRANE DENGAN METODE MAINTAINABILITY DAN COSTING UNTUK MENGURANGI BREAKDOWN Andy Hardianto; Pratikto Pratikto; Lilis Yuliati
Journal of Engineering and Management in Industrial System Vol 3, No 2 (2015)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.71 KB) | DOI: 10.21776/ub.jemis.2015.003.02.10

Abstract

Abstract PT. ABC is a manufacturing company in the field that requires a crane hoist readiness in every production, with an average of 42.92 hours a breakdown, the necessary methods of treatment that effectively and efficiently, with a critical component bearing, gear, wheel trolley, wire rope, shaft, cable pedant. The time interval is the optimum replacement parts NTN Bearing 304; 51 108 21 days, Talibaja (wire rope) Gustav / Demag O16 x 8 x 36 + 1 stainless core38 day, canvass the motor 45, wheel trolley 89 days, gear 76 a day, the pen as 39 days, the cable pendant 67 danUntuk cost savings component replacement Bearing NTN 304; 51 108 Rp. 689,435.94 and pesentase amounted to 3.34%, Talibaja (wire rope) Gustav / Demag O16 x 8 x 36 + 1 stell core Rp. 3,634,660.00 and a percentage of 2.51%, canvass motorcycle is Rp. 7,948,540.37 and a percentage of 58.88%, wheel trolley Rp. 755,467.50 and a percentage of 11.27, gear Rp. 50,195,101.20 and a percentage of 61.68%, the pen as Rp. 18,110,676.40 and the percentage of 62%, amounting to USD 8,545,480.84 pendant cable and a percentage of 38.47%.
Karakteristik Pembakaran Difusi Campuran Biodiesel Minyak Jarak Pagar – Etanol / Metanol Pada Mini Glass Tube Dan Mini Copper Tube M. Arsad Al Banjari; Lilis Yuliati; Achmad As'ad Sonief
ROTOR Vol 8 No 2 (2015)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.666 KB)

Abstract

Diffusion is performed combustion in diesel engines, biodiesel as a biofuel that is used to replace fossil fuels. Many studies have looked at the effects of a mixture of biodiesel fuel ethanol-methanol-diesel with different percentages in terms of engine performance and exhaust emissions, but have never done research on combustion characteristics. This paper discusses how the mix ratio diffusion combustion characteristics of biodiesel - ethanol / methanol on a mini glass tube burner and a mini copper tube burner. the results showed that the use of mini glass tube burner produces more explosions flame than mini copper tube burner. This is because the temperature of the mini copper tube is higher than the temperature of the mini glass tube, and fire explosion occurred because of thecohesionof theglasstubeto thefuel, so that theliquid fueloftenjumpoutofthe burner tipand thenthere was an explosionof fire, and alsocoolingthe fuelvaporwhen passing theminiglasstube. The lower of viscosity and boiling point properties can reduce explosion flame, and making the evaporationfuelmore better. Conclusion, the use ofmini copper tube burner, producesmore stable flamethanmini glass tube burner. and properties of biodiesel-methanol is better than biodiesel-ethanol. Keywords :Biodiesel, diffusion flame, combustion characteristics, mini glass tube burner, mini copper tube burner.
Studi Eksperimental Pengaruh Sumber Kalor Terhadap Distribusi Temperatur dan Temperatur Pendidihan pada Tapering Heat Pipe Sarip Sarip; Sudjito Sudjito; Lilis Yuliati; Moch. Agus Choiron
Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (682.612 KB) | DOI: 10.31884/jtt.v2i2.18

Abstract

Heat source of the heat energy can affected of the temperature distribution and the boiling temperature of the tapering heat pipe located on the evaporator. The purpose of this study was conducted to determine the effect of heat source on the temperature distribution and boiling temperature that occur in the tapering heat pipe. In this study, used heat pipe tapered shape of the copper pipe diameter of 10 mm and 20 mm as evaporator as condenser with a length of 200 mm. Tapering heat pipe inside there is a wick mesh screen serves as the axis of the capillary to the return liquid / backflow of fluid from the condenser to the evaporator. The condenser ends mounted a valve to inject the working fluid into the tapering heat pipe. K-type thermocouple is integrated with NI-9211 module and c-DAQ 9271 to measure the temperature distribution along the tapering heat pipe with a heat source of DC power supply for (25, 30, 35, 40, 45, 50) Watt. The results showed that there was a difference of temperature distribution and boiling temperature caused by the variations heat source. Temperature of distribution and boiling temperature which tends to increase in value the greater the heat source, so it can be concluded that the heat source has an influence on the temperature distribution and the boiling temperature of the tapering heat pipe with 50 Watt heat source generates temperature distribution and boiling temperature stable.
The Total Impulse Study Of Solid Propellants Combustion Containing Activated Carbon From Coconut Shell As A Catalyst Nur Rachman Supadmana Muda; I.N.G.Wardana I.N.G.Wardana; Nurkholis Hamidi; Lilis Yuliati; Aries Boedi Setiawan
International Conferences SDGs 2030 Challenges and Solutions Vol 1, No 1 (2017)
Publisher : International Conferences SDGs 2030 Challenges and Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2586.28 KB)

Abstract

This study investigates the capabilities of thrust, burn time, and total impulse from solid propellant materials. Attempts to increase the three variables are quite difficult because the thrust value is inversely proportional to the value of the burn time, it requires the catalyst as a regulator of the composition to produce an optimal variable value. The activated carbon from the coconut shell is used as a catalyst on a composite solid propellant material containing ammonium perchlorate (AP), hydroxyl terminated polybutadiene (HTPB) and aluminium (Al). The effect of adding coconut shell activated carbon may affect thrust parameters, burn time and total impulse rocket. The method of measuring parameters using rocket thrust test equipment. The mass of the test sample is 250 grams, the diameter of the test chamber is 20 mm, the length of the chamber is 200 mm. After going through the combustion process, it produces a graph and thrust value, total impulse and burning time. The thrust test results show that the test propellant 3 produces the best characteristic composition of 70% AP, 15% HTPB, 10% Al, and 5% activated carbon of 400 mesh with average thrust: 148.67N, total impulse: 637, 5 Ns, burn time: 4,288 s.
SIMULASI PERUBAHAN BEBAN PEMBANGKIT LISTRIK TENAGA UAP: STUDI KASUS DI GORONTALO UTARA Nurdin Hasananto Teguh; Djarot Bangun Darmadi; Lilis Yuliati
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.838

Abstract

Conceptual and design studies on 25 MW Northen Gorontalo steam based power plant are carried out under the existing comissioning data at four different load. The urgency of this study is related with supporting the prevention of greenhouse gass  emission and completing indonesian power plant energy map. This observation conducted by simulating those condition in Gatecycle  software and analyzing the output parameter to determine the power plant performance specifically heat rate, heat transfer duty, efficiency, power generated and fuel consumption.The study outcomes shows that heat rate at 50% TMCR was increased as much as 50 kcal/kwh as the load ramped down indicating power plant requires more energy to generate similar amount of  power. While the fuel consumption, power, and efficiency proportionally werer increased as the power plant load ramping up. Comparing thirteen equipments heat transfer, condenser was conducting the highest heat transfer duty followed by boiler and first stage of superheater.
Pengaruh persentase CO2 terhadap temperatur dan kecepatan api premixed laminar pada oxy-butane combustion Lilis Yuliati; Francisca Gayuh Utami Dewi; Ichtiaraka Amarullah
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.428

Abstract

Oxy-combustion is one of the technologies developed to reduce the amount of CO2 released into the atmosphere in order to reduce the greenhouse effect and global warming. Gas recirculation in oxy-combustion results in the presence of CO2 in the oxidizer. This study was conducted to determine the effect of the percentage of CO2 on the laminar premixed flame speed in the oxy-butane combustion process. Experiment was conducted on equivalent ratios of 0.6, 0.8, 1, 1.2 and 1.4. CO2 content were varied by 50%, 55%, 60%, 65% and 70%, calculated based on the amount of oxygen in the combustion process. The measurement of laminar premixed flame speed was carried out on a cylindrical tube burner. The results showed that the flame temperature and the laminar premixed flame speed decreased with the increasing of CO2 percentage in the oxidizer. The presence of CO2 causes the heat generated from the combustion process absorbed by CO2, so that the flame temperature is reduced. The decreasing in the flame temperature is an important factor which caused the decreasing in laminar premixed flame speed in a mixture with CO2 content. Furthermore, the presence of CO2 in the reactants prevents the butane and oxygen from mixing and reacting, hence the flame speed becomes lower. In addition, it is known that for every percentage of CO2 in the oxidizer, the flame has a maximum flame temperature and speed at an equivalent ratio of unity.
KARAKTERISASI BIODIESEL PRODUK TRANSESTERIFIKASI MENGGUNAKAN VARIASI KECEPATAN SENTRIFUGASI PADA PROSES PEMISAHAN FAME Sukhma Kusuma Dewi; Lilis Yuliati; Agung Sugeng Widodo
Jurnal Rekayasa Mesin Vol. 14 No. 1 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i1.1082

Abstract

The biodiesel production by transesterification method has five stages, namely: (1) the preparation process; (2) the transesterification process, (3) the separation process, (4) the washing process; and (5) the drying process. Separation occurs independently using a split funnel and gravity force, which takes approximately 120 minutes. The length of this separation process makes it less time efficient in the biodiesel production process. Therefore, a centrifuge separates FAME and glycerol while accelerating the process. This study aimed to determine the quantity and quality of biodiesel made from CPO and VCO using centrifugal speed and separation time variations. The rotation speed is varied between 2000 rpm and 4000 rpm, while the separation times are 5 minutes and 10 minutes. The result showed that the highest quantity of biodiesel from CPO and VCO was obtained using high centrifugation speeds of 4000 rpm and a 10-minute separation. The result showed biodiesel produced with this variation has good quality which met with SNI.    
Co-Authors A.A. Ketut Agung Cahyawan W Achmad As'ad Sonief Adhitya Wardhono Adi Yermia Tobe Agung Sugeng Widodo Agung Sugeng Widodo Agus Luthfi Aji, Supa Kusuma Ali Akbar Andy Hardianto Aries Boedi Setiawan Aritonang, Gabriel Rianto Ariyani, Novi Arwin Arwin Ati Musaiyaroh, Ati Atmaja, Purna Pria Badara Shofi Dana, Badara Shofi Christia Meidiana Defmit B.N. Riwu Denny Widhiyanuriyawan Desyandri Desyandri Djarot Bangun Darmadi Dominikus Rato Dwi Kristanto Edy Hariyadi Eko Siswanto Ena Marlina Endah Kurnia Lestari Faiz, Naufal Muhammad Faiza, Laila Niswatul Fajar Wahyu Prianto Fauzan Baananto Firda, Rochmania Francisca Gayuh Utami Dewi Gunawan, Chandra Hamidi , Nurkholis Hamidia, Nurkholis Heru S.P. Saputra I.N.G. Wardana I.N.G.Wardana I.N.G.Wardana Ibadurrohman, Ibrahim Ahmad Ichtiaraka Amarullah Ilham, Mochamad ING Wardana Ketut Tirtayasa Khusnul Khatimah, Diah Ayu Latifah, Khusnul Lazuardi, Muhamad Luthfi Luqyana, Salsabilla Firyal M. Arsad Al Banjari M. Arsad Al Banjari, M. Arsad Maulana , Syahrizal Maulana, Reza Bagas Mega Nur Sasongko Moch. Agus Choiron Moch. Agus Choiron Mochammad Khoirul Rosidin Moh. Adenan N. Ari Subagio Najah, Amaliyan Nanik Istiyani Nugroho, Arief Budi Nugroho, Setyawan Dwi Nur Rachman Supadmana Muda Nurdin Hasananto Teguh Nurkholis Hamidi Oyong Novareza Pragiwaka, Rafif Ezrha Pratikto, Pratikto Priyanto, Fajar Wahyu Pujohastarto, Ilham Ridwan Purnami Purnami Purnami Purnamie Titisari Puspitasari, Nazila Dwita Rahma Redi Bintarto, Redi Rohmah, Fifi Nur Rudianto Raharjo S Siswanto Saputra, Indra Adi Sari Dewi, Beti Sarip Sarip sarip, sarip Septarina Prita Dania Sofianti Shulthoni, Mochammad Simanungkalit, David Siswanto Siti Komariyah Slamet Wahyudi Sonief, Achmad As’ad Sudjito Soeparman Sukhma Kusuma Dewi Sulaksono, Leonardo Kurniawan Sutantio, Raden Alamsyah Teguh Dwi Widodo Titik Maslikatin Udin, Misbach Wibisono, Sunlip Widya Wijayanti Wilantari, Regina Niken Winarto Winarto Yaqinah, Nuriyatul Inayatil