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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang PREMISE LAW JURNAL DEDIKASI JURNAL MAHASISWA JURNAL ELEKTRO JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY JURNAL AKTUAL AKUNTANSI KEUANGAN BISNIS TERAPAN (AKUNBISNIS) IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Isu Teknologi Jurnal Ilmiah Kesehatan Keperawatan Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development
Indra Hermawan
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Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health

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Analysis of the Effectiveness of Condenser Heat Transfer in the Distillation Process of Serai Wangi Leaves Karo Karo, Septa Fernando; Weriono; Din Aswan Ritonga; Darianto, Darianto; Muhammad Idris; Indra Hermawan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.6401

Abstract

The condenser is a critical component in systems designed to condense steam into liquid. The performance of a condenser can be influenced by the rate of heat transfer, vacuum pressure, and effectiveness. The aim of this research is to ascertain the effectiveness value and the variables affecting the performance of the condenser in the distillation process of citronella leaves, as well as to understand the impact of the heat transfer rate on film condensation (condensate steam mass). The methodology for assessing effectiveness values utilized the Log Mean Temperature Difference (LMTD) and Effectiveness – Number of Transfer Unit (NTU) approaches, alongside comparing the condensate steam mass with the steam mass flow rate to achieve film condensation. The research findings revealed an effectiveness value of 89% for the condenser, with 36% of the condensate steam mass converting into bio-oil. Influential variables include a capacity ratio of 0.0182840 and a heat transfer rate of 186,544.68 W. The LMTD was calculated to be 29.74°C. Thus, it can be concluded that the condenser used in the distillation process of citronella leaves still maintains good performance.
Design of Distillation Equipment for Extracting Atsiri Oils from Serai Wangi Leaves Using the Steam and Water Method Syafrizal, Muhammad; Irwansyah; Siswo Pranoto; Idris, Muhammad; Darianto, Darianto; Indra Hermawan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.6402

Abstract

Distillation is a technique for extracting Atsiri oils from various plants, one notable example being the Serai Wangi plant (Cymbopogon nardus), a type of herb commonly used in medicine, beauty products, and even as an additive to fuel. Atsiri oils from Serai Wangi can be produced through various methods, such as extraction. The advantage of this method is that it does not require high temperatures, thereby preventing the oil from degrading easily. Consequently, this distillation equipment design was developed to assist farming communities in acquiring an efficient distillation machine. The design process began with a literature study related to the design of distillation equipment. It involved calculating the design of the device and testing the functionality of the distillation equipment. The parameters observed were the effective capacity of the device, its performance, and the yield results. The outcome of this Serai Wangi oil distillation equipment design, featuring an evaporation tank, is that the evaporation process, where the burning furnace heats the water in the tank and steam is directed to the condenser through a connecting pipe, operates efficiently and can produce Atsiri oils of high quality and quantity.
Implemention of Washing Machine to Increase The Production Capacity of Sweet Potato : Implementasi Mesin Pencuci untuk Meningkatkan Kapasitas Produksi Ubi Jalar Gusri Akhyar Ibrahim; Indra Hermawan; Arinal Hamni; Dewi Sartika; Subeki; Ahmad Su’udi
Dharmakayana Vol 2 No 1 (2025): Mei : Dharmakayana: Journal of scientists, engineers, educators and scientific ac
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v2i1.41156

Abstract

The rotary system sweet potato washing machine is used to clean sweet potatoes that are dirty and contain lots of soil and other impurities such as microorganisms. The rotary system which rotates and rolls is used for perfect movement, so that the dirt covering the sweet potato is removed completely. The aim of this activity is to test and determine the production capacity of the rotary system of sweet potato washing machines used by sweet potato collecting farmers. The testing was carried out by putting a number of sweet potatoes into the washing tub, along with running water as a cleaning fluid. The drum is rotated with a rotation speed of 1430 rpm which is connected to a gear ratio of 1:30, so the rotation speed is smaller. The stirring arm is moved simultaneously with the movement of the drum. The rotating stirrer arm will provide a more dynamic movement so that the adhering soil will be removed from the surface of the sweet potato, as the washing water flows. The test results showed that the process of washing the sweet potatoes was successful, where the sweet potatoes that had dirt attached to them came off completely. The production capacity of the sweet potato washing machine is 50 kg, with a washing time of 5 minutes. The production cycle for a rotary system sweet potato washing machine is 15 minutes while manual washing is 40 minutes. Meanwhile, the productivity of rotary system washing sweet potatoes can reach 180 kg/hour. The production costs required for the equipment are IDR. 539,-/hour.
Co-Authors Ahmad Su’udi AMRU SIREGAR Arinal Hamni Bongot Halomoan Simamora Cek Putera Handalan Crisna Djaja Mungok dadi santoso Darianto Darianto Darianto, Darianto Dewi Sartika Dicky Nurmayadi Din Aswan Ritonga Felix Sigalingging Gusri Akhyar Ibrahim IRWANSYAH Karo Karo, Septa Fernando Muhammad Idris Muhammad Idris Muhammad Idris Novitasari Eviyanti Nurcawedha Riztria Adinda Saryono, M.Or. S.Pd. Jas. Sholahudin, Farhan Siswo Pranoto Sri Mulyanti Subeki Syafrizal, Muhammad Weriono Yudi Aditya