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Agung Sugeng Widodo
Brawijaya University
Mechanical Engineering

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Efisiensi Sistem Pemanasan Air dengan Penerapan Selubung Bertingkat pada Perforated Burner Agung Sugeng Widodo; Francisca Gayuh Utami Dewi
Jurnal Rekayasa Mesin Vol. 9 No. 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.327 KB) | DOI: 10.21776/ub.jrm.2018.009.01.4

Abstract

One of the causes of inefficiency in the heating system by using a gas stove is radiation heat transfer. The application of stratified sheath is expected to reduce the heat loss. In this study an investigation conducted on a gas stove type perforated burner, by adding a stratified sheath. The parameters such as energy absorbed by water and energy produced by fuel are used to measure the performance of the heating system. The fuel is liquid petroleum gas (LPG) with a composition of 50% butane and 50% propane. The results show that the application stratified sheath on perforated burner at 0,0125 liter / sec has an average efficiency of 53,2% with the time required to boil 1,5 liters of water for 670 seconds, 36 seconds faster for the case perforated burner without stratified sheath and 80 seconds faster than conventional burner cases.
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 Francisca Gayuh Utami Dewi Lilis Yuliati Sukhma Kusuma Dewi