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ANALYSIS OF FUEL INJECTION PRESSURE EFFECT ON DIESEL ENGINE COMBUSTION OPACITY VALUE Sudarma, Andi Firdaus; Pranoto, Hadi; Sera, Mardani A.; Aziz, Amiruddin
International Journal of Advanced Technology in Mechanical, Mechatronics and Materials Vol 1, No 1 (2020)
Publisher : Institute for Research on Innovation and Industrial System (IRIS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.719 KB) | DOI: 10.37869/ijatec.v1i1.6

Abstract

The use of diesel engines for vehicle applications has expanded for decades. However, it produces black smoke in the form of particulate matter contains fine and invisible particles during operation. The popular method for measuring the smoke opacity is by using a smoke meter for its simplicity and less costly. Fuel injection pressure is one of the parameters that affect the emission significantly, and the proper nozzle adjustment can reduce the density of exhaust gases and improve the engine performance. The purpose of this study is to determine the optimum fuel spray pressure that produces the lowest opacity value and analyse the effect of fuel spray pressure on the opacity value at a different engine speed. The present experiment uses the Hyundai D4BB engine, and the pressure variations were implemented on the injector nozzle at 125, 130, and 135 kg/cm2. The engine was also tested with various engine idle speed, i.e., 1000, 1500, 2000, and 2500 rpm. It has been found that the optimum distance of fuel spraying is 147.679 mm with injector nozzle pressure 130 kg/cm2, and the value of opacity is 9.51%.
CLOSED-HORIZONTAL ROTATING BURNER DEVELOPMENT FOR OPTIMIZING PLAM SHELL CHARCOAL (PSC) PRODUCTION Feriyanto, Dafit; Zakaria, Supaat; Alva, Sagir; Pranoto, Hadi; Sudarma, Andi Firdaus; Wong, Albert Phak Jie
International Journal of Advanced Technology in Mechanical, Mechatronics and Materials Vol 1, No 2 (2020)
Publisher : Institute for Research on Innovation and Industrial System (IRIS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.355 KB) | DOI: 10.37869/ijatec.v1i2.23

Abstract

Activated Carbon (AC) was produced through several stages such as carbonization, crushing and activation process. The critical part of AC production was located at carbonization process due to burner issues that need to complete burning in short time, appropriate temperature and low cost. Therefore, this research focus on developing burner which called by closed-horizontal rotating burner. The dimension of the burner was 65 x 790 mm (D x L) wih the capacity of 30 kg/carbonization process. This burner need 1 hour for complete burning of palm shell to palm shell charcoal (PSC). Several analysis were conducted such as stress, displacement, factor of safety and thermal analysis. because this burner involved in rotation motion and high temperature operation. Physical properties has been measured which consists of moisture content (3.8-5%), ash content (7.7-8%), volatile content (53.7-56.6%) and fixed carbon content (31.3-34.7%). It can be summarized that this burner was very effective to produce PSC with short time carbonization process, low cost and complete charcoal production.
PERANCANGAN HEATSINK UNTUK LAMPU LED MENGGUNAKAN SIMULASI CFD Anggraini, Rini; F. Sudarma, Andi; Yuliarty, Popy; V.Enriko, Fajar
Industri Inovatif : Jurnal Teknik Industri Vol 10 No 1 (2020): Inovatif Vol. 10 No. 1
Publisher : Prodi Teknik Industri S1 Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/industri.v10i1.2532

Abstract

Artikel ini menampilkan hasil studi secara numeric dari heatsink yang digunakan untuk melepaskan panas dari lampu LED secara konveksi alami.Heatsink terdiri dari tapak lempengan yang berbentuk lingkaran dan terhubung dengan sirip / fin pada salah satu sisinya.Secara umum, aliran dari fluida pada heatsink bergerak secara konveksi alami dimana udara yang lebih dingin mengalir masuk kedalam bagian fin yang lebih panas dan mengalir keluar menuju ujung-ujung sirip. Pada simulasi ini terdapat 3 buah heatsink dengan bentuk yang berbeda (yaitu bentuk persegi, bentuk pin dan bentuk trapesium) dipelajari secara numeric menggunakan perangkat lunak Solidworks untuk mengetahui laju pendinginan yang paling efektif. Hasil simulasi thermal menunjukkan bahwa desain heatsink dengan sirip trapesium menunjukkan temperature maksimal yang terendah yaitu 71,1025oC,  sehingga desain yang direkomendasikan untuk aplikasi dengan konveksi alami adalah sirip trapesium. Luas area permukaan bentuk trapesium lebih besar dibandingkan dengan bentuk persegi dan bentuk pin, yang mempengaruhi efisiensi perpindahan panas pada heatsink