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PROGRAM STUDI TEKNIK MESIN - JURUSAN TEKNIK MESIN DAN INDUSTRI - FAKULTAS TEKNIK - UNIVERSITAS SYIAH KUALA, Jln. Syech Abdul Rauf, No. 7, Darussalam, Banda Aceh 23111, Aceh INDONESIA
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INDONESIA
Jurnal Teknik Mesin
Published by Universitas Syiah Kuala
ISSN : 23018224     EISSN : 26230747     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 7, No 2 (2019)" : 5 Documents clear
Peningkatan Kadar Dissolved Oxygen pada Area Tambak Mengggunakan Windmill Aerator Tipe Savonius 4 Blade Darwin Harun; Syarizal Fonna; Ika Wahyuni
Jurnal Teknik Mesin Unsyiah Vol 7, No 2 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jtm.v7i2.18233

Abstract

The aeration process is a method  to increase the dissolved oxygen levels in the water environment. In the pond area has a minimum requirement of dissolved oxygen content in the water so that fish can live and develop. The minimum value of dissolved oxygen in the pond area is 4 mg / l, but the higher the level of dissolved oxygen in the pond area, the better the results of the pond. Previous research conducted by Rizki was Analysis of the Potential of Wind Energy for Windmill Aerator Performance of ponds in Alue Kumba in East Aceh Regency, and the results of these studies showed that the wind energy in the Alue Kumba Village had the potential to operate windmill aerators. However, this study has not shown the results of the dissolved oxygen value of the windmill aerator system, therefore this study aims to obtain results and the area that can be reached by a diffuser. The method used is data collection of dissolved oxygen from the diffusser installation with a distance of 1.5 meters and data collection at 3 times, morning, afternoon and evening. Installation of windmill aerator in the morning produces dissolved oxygen value of 7.42 mg / l with a maximum distance of 18 meters, then in the afternoon the oxygen value of 6.23 mg / l with a maximum distance of 15 meters, and for the afternoon conditions the value of dissolved oxygen is 5.16 mg / l with a maximum distance of 16.5 meters. The dissolved oxygen value after the installation of the windmill aerator increased with an average increase of 1-2 mg / l at each measurement point with the highest dissolved oxygen highest value of 7.42 mg / l up from 5.52 mg / l with a maximum distance of 18 meters on the measurement morning. From the results of this study explain that this method can produce a good area of dispersed dissolved oxygen with an average distance of 16.5 meters with a minimum dissolved oxygen condition that is good for fish to develop in the area of the pond
Kaji Eksperimental Unjuk Kerja Mesin Diesel Memanfaatkan Campuran Biodiesel Dari Biji Alpukat (Persea Americana) Muhammad Ilham Maulana; Khairil Khairil; Rizal Aiyubi
Jurnal Teknik Mesin Unsyiah Vol 7, No 2 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jtm.v7i2.18234

Abstract

The availability of fossil fuels is increasingly decreasing, so some researchers have to look for alternative fuels, namely biodiesel. The raw material used as biodiesel was avocado seeds planted in Indonesia. Avocado seed oil content ranges from 15-25%. The purpose of this study was to determine the characteristics of biodiesel and diesel engine performance testing. This biodiesel is obtained through the esterification and transesterification process. This research uses a mixture of avocado seed oil biodiesel fuel with Pertamina dex fuel namely (B-5) 5%:95%, (B-15) 15%:85%, and (B-25) 25%:75% and (B-0) as a comparison. The test was carried out at the Engine and Propulsion System Laboratory at Mechanical Engineering Department, Universitas Syiah Kuala. The diesel engine was used is RUGGERINI HT-51 with a maximum power of 3 kW/3600 rpm. Biodiesel from avocado seed was tested physicochemical characteristics; the result is in accordance with National Standard (SNI) for biodiesel fuel. Performance results show the B-15 fuel produces the best engine performance at 3500 rpm. At this cycle a maximum power of 1.90 kW is obtained, the lowest specific fuel consumption rate of 2000 rotation (rpm) is 0.34 kg / kW hour on B-15 fuel, and the highest thermal efficiency on B-15 fuel with 2000 rotation (rpm) is 14.05%.
Pengaruh Diameter Hidrolik Terhadap Perpindahan Panas Kolektor Surya Belokan Tajam Ahmad Syuhada; Ratna Sary; Zakirullah Zakirullah
Jurnal Teknik Mesin Unsyiah Vol 7, No 2 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jtm.v7i2.18236

Abstract

Rectangular crossings with sharp turns have complex three-dimensional structures because the flow separation is caused by sudden changes in direction of flow in sharp turns. This study aims to determine the effect of variations in the width of the sharp channel solar collectors with hydraulic diameter factors to increase the heat transfer rate in solar collectors. The size of the collector examined was 2440mm x 1220mm in the form of a rectangular cross-section. Solar collectors use iron and iron gram absorber with a thickness of 30mm, the thermometer is placed on each track, channel, absorbent and output temperatur  of each solar collector. The results of the study can be concluded that the solar collector with the largest hydraulic diameter value of 223 cm will produce the highest output temperatur  and the temperatur  distribution at the collector can reach 91º C at 13.30. This is because the greater the value of the hydraulic diameter or cross-sectional area will increase the heat transfer rate.
Pengembangan Sistem Pengukuran Gaya Tumbukan pada Jurus Pukulan Datar Pencak Silat Menggunakan Sistem Strain Gauge Muhammad Rizal; Iskandar Hasanuddin; Muhammad Asyraf
Jurnal Teknik Mesin Unsyiah Vol 7, No 2 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jtm.v7i2.18237

Abstract

Force plate is a tool that is very useful for knowing the amount of force produced by an athlete. This tool can help trainers or sports researchers in the physical development of an athlete. This research is a development of a tool for measuring the force that calculates collision forces while assessing the characteristics of a strain gauge-based transducer for flat punch moves from Pencak Silat. The analysis was done theoretically to determine the characteristics of this measuring instrument and experimentally to figure out the validation of the measuring instrument. This impact force measurement instrument has been made and can absorb about 2000N. It has sensitivity about 0.0981 mV/N, has linearity deviation about 1.169 mV (9,431), and has hysterisis percentation about 5,3%. The result of validation test that has it biggest deviation about 2.99 N. Thus, this tool can be used to measure the impact force which was produced from the Pencak Silat flat punch moves.
Analisa Pengaruh Belokan Tajam pada Pipa Besi Terhadap Perpindahan Panas pada Solar Water Heater Thaib Razali; Ahmad Syuhada; Ulul Rizza Jumada
Jurnal Teknik Mesin Unsyiah Vol 7, No 2 (2019)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jtm.v7i2.18238

Abstract

Solar energy is a renewable energy. In Indonesia the potential for renewable energy is very abundant but there is no optimal utilization. The use of solar energy, one of which is to use solar collectors to collect solar thermal energy. Solar water heater is a device that uses solar radiation and converts it into thermal energy. To get the most out of the collector, many ways can be done, one of which is the influence of the distance between the pipe passages, the length of the pipe passage and the diameter of the pipe bends. Then the closer the distance between the passage of the pipe will get the results of greater collector efficiency. In this research, the effect of sharp turns on the pipe with a total length of 4 meters is varied into 4 pipe length variations (70, 30, 20) cm and the shape of the Circle on the heat transfer of the solar water heater. From the research with the sun intensity of 691 W / m2 occurred in collector C (20 cm). The optimal results obtained are an outlet temperature of 64 OC with useful heat energy of 447.69 W / m2 and an efficiency of 89.98%, occurring at 14.00 WIB.

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