Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Jurnal Mechanical Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
Afdhal Kurniawan
Unknown Affiliation
Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Performansi Mesin Pendingin Tipe Chiller untuk Cold Storage dan Indoor Menggunakan Ethylene Glycol Coolant Azridjal Aziz; Hendrik Syahputra; Rahman Putra Mainil; Afdhal Kurniawan
JURNAL MECHANICAL Vol 6, No 2 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mech.v6.i2.201510

Abstract

AbstractRefrigeration device is used to reduce the temperature of the room or cooled material by absorbing heatfrom the room/material. The most refrigeration device operated by using the vapor compression refrigerationcycle. This research was done experimentally using refrigeration device chiller type to cool the ethylene glycolcoolant in the refrigeration box (evaporator unit), and ethylene glycol coolant is used to absorb heat in coldstorage and indoor (test room). The results show for the circulation of ethylene glycol coolant to the coldstorage COP value is 2.80, while the circulation of ethylene glycol coolant to the indoor COP value is 5.12. Onthe testing of ethylene glycol coolant was circulated to the indoor with 1000 Watt cooling load, the COP value is5.19, and for circulated to the cold storage and indoor simultaneously COP is of 3.66. The performance ofchiller refrigeration device is influenced by the cooling load, the greater of cooling load that would affect thework of the compressor so that the pressure in compressor increase and the energy consumption to operate thecompressor also increasing too.Keywords: refrigeration, heat, COP, PF, cooling load.
MAINTENANCE KERUSAKAN CHECK VALVE POMPA DRAINAGE PUMP Ariska Purnama; Yovan Witanto; Afdhal Kurniawan
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 7 No. 2 (2023): Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v7i2.34065

Abstract

A drainage pump function is to pump water from the sump pit to the tail race. The drainage pump has a check valve to operate optimally. A check valve is a type of valve used in a piping system to prevent backflow, contamination between fluids, and isolating low-pressure areas or systems from high-pressure ones. One of the problems is the occurrence of blockages which result in damage to the check valve on the drainage pump. The purpose of this obsevation is to be able to find out the corrective maintenance process on the check valve in the Tes's Hydroelectric Power Plant, and to find out the effect of check valve damage on the reduction of electric power in the Hydroelectric Power Plant generator unit. At the time before maintenance was carried out on the check valve of the drainage pump, it made a decrease in electric power, thus corrective maintenance was carried out on the check valve on the drainage pump to maximize the electric power from the generator unit.
Co-Authors Ariska Purnama Azridjal Aziz Hendrik Syahputra Rahman Putra Mainil Yovan Witanto