Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi
Zulfan Zulfan
Prodi Teknik Mesin Fakultas Teknik Universitas Syiah Kuala
Aerospace Engineering Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
KAJI KARAKTERISTIK PERPINDAHAN PANAS PENGARUH BELOKAN TAJAM PADA PENUKAR KALOR TIPE TUBE Zulfan Zulfan; Ahmad Syuhada; Zahrul Fuadi; Al Munawir
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 2 (2020): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1148.045 KB) | DOI: 10.35308/jmkn.v6i2.2755

Abstract

Using the thermal machines in the production process or overdone heat power operation require unit of Heat Exchanger (HE) having high level heat transfer coefficient (hc) for transferring to the thermal reservoir. Experimental studies have been done for heat transfer characteristics of forced convection on the round duct with method use that compare three of heat exchanger with a variety of pipe bends and a long pass after a turn that is different.  HE pipes have length of tube 500 mm with a 12 bends, HE pipes length of tube 250 mm with 24 bends and HE pipes length of tube 125 mm with 48 bends. The heat fluid flowed into the tube, and the tube is immersed in the cold water tank. For each of test equipments can be done three times experiment with different variations in inlet temperature that is at 600C, 700C and 800C, with a duration of 5 minute intervals for 50 minutes. Many pipe bends and short passes after a HE will increase turbulence flow pattern. The high of turbulence will increase the value of heat transfer coefficient, but it can hold on fluid flow rate. Keywords : heat transfer characteristics, round duct, sharp bends, long pass
UNJUK KERJA PERALATAN PENGERING HYBRID (ENERGI MATAHARI DAN GAS) UNTUK PENGERINGAN BIJI COKLAT Miswar abd; Zulfan Zulfan
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 7, No 2 (2021): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.651 KB) | DOI: 10.35308/jmkn.v7i2.4456

Abstract

This research was conducted to examine the drying system with a hybrid energy source between solar energy and gas fuel for applying cocoa beans. Solar thermal energy is used as the main energy source for this dryer, while the energy source from gas fuel is the main energy back-up when the intensity of the sun's heat drops (afternoon, evening and cloudy weather). The results of this test indicate that the drying performance of the data plate collector with 3 cm thick black sand can eradicate cocoa beans with an initial air content of 65-75% with a duration of 26-28 hours, while the hybrid dryer with heat and gas energy sources can shorten the time. drying to 17-19 hours. Keywords: Hybrid Energy, Gas Fuel, solar intensity, Temperature
Pengukuran Sound Pressure Level (SPL) dalam kabin mobil dengan menggunakan SEA Model Al Munawir; Murhaban Murhaban; Zulfan Zulfan
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 2 (2020): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.616 KB) | DOI: 10.35308/jmkn.v6i2.2758

Abstract

Statistical energy analysis (SEA) is a well-known method to analyze the flow of acoustic and vibration energy in a complex structure. For an acoustic space where significant absorptive materials are present, direct field component from the sound source dominates the total sound field rather than a reverberant field, where the latter becomes the basis in constructing the conventional SEA model. Such environment can be found in a car interior and thus a corrected SEA model is proposed here to counter this situation. The model is developed by eliminating the direct field component from the total sound field and only the power after the first reflection is considered. A test car cabin was divided into two subsystems and by using a loudspeaker as a sound source, the power injection method in SEA was employed to obtain the corrected coupling loss factor and the damping loss factor from the corrected SEA model. These parameters were then used to predict the sound pressure level in the interior cabin using the injected input power from the engine. The results show satisfactory agreement with the directly measured SPL.Keywords : Statictical Energy Analysis (SEA), Sound Pressure level (SPL), DLF and CLF
Co-Authors Ahmad Syuhada Al Munawir Miswar abd Murhaban Zahrul Fuadi