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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Ilmiah Teknik Mesin "MEKANIK" IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)

Jufrizal Jufrizal

Universitas Medan Area

Author-ID : 5381717

Aerospace Engineering Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Articles

ANALISA UJI KINERJA MESIN PENGAYAK PASIR MENGGUNAKAN PIRINGAN AYAK DENGAN METODE GERAK EKSENTRIK KAPASITAS 1 M3/JAM Irfandi, Irfandi; Sutrisno, Franky; Eswanto, Eswanto; jufrizal, Jufrizal
MEKANIK: Jurnal Ilmiah Teknik Mesin Vol 3 No 1 (2017): Mei 2017
Publisher : Jurusan Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Medan (ITM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (677.927 KB)

Sand is a material that is very much needed for building materials. This sand material may still be mixed with stones or gravel. To get this fine sand material, the process of pengayaka is carried out. Characteristics of sand are dry sand, half wet sand, wet sand. In terms of HR, this perpetuation process still requires relatively large time and costs. Sand sieving machine using a sieve disk device with eccentric motion method after the speed is made must still be solved, for example the machine has answered the problem above. Because good results will certainly increase the value of work as well as vice versa. This measurement is done to determine the production capacity, power at the time of sifting sand, and sand density. From the test results obtained on the type of dry sand density of 1.414 kg/liter total capacity of 3.132 m3/hr, type of half sand wet density 1,551 kg / liter total capacity 1,461 m3 / hour, type of wet density 1,651 kg /liter total capacity 0,791 m3/hour. From the results of electromotor testing, it was obtained a power of 170 Watt. No-load testing obtained power of 452.83 Watt, capable of providing 454.59 Watt of power for testing with dry sand loads. Where as for testing with half-wet sand load produces 458.01 Watt of power, and to calculate with wet sand load the power is 463.32 Watt. At the time of this sand sieving the results of its capacity are very beneficial in the type of sand, and in the presence of tribal density. From the results of the test data that is done does not affect the capacity and density is more open to capacity.

Pengaruh Penambahan Regenerator Terhadap Performansi Mesin Stirling Tipe Gamma Zufri Hasrudy Siregar; Jufrizal Jufrizal; Bintang Kelana Putra
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Mesin stirling merupakan mesin pembakaran luar dan menggunakan prinsip regeneratif siklus tertutup. Regenerator mesin Stirling berada di antara pemanas dan pendingin yang terdiri dari matriks. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan regenerator terhadap performansi mesin stirling tipe gamma. Metode penelitian ini dilakukan secara eksperimental yaitu dengan mengamati performansi sebelum menggunakan regenerator dan sesudah menggunakan regenerator. Hasil penelitian sebelum menggunakan regenerator diperoleh selisi temperatur maksimum 95,1 ℃, dan rata-rata putaran mencapai 235,6 rpm, menghasilkan torsi tertinggi 0,624 Nm, daya tertinggi 16,430 Watt, dan efisiensi tertinggi sebesar 73,2 %. Sedangkan menggunakan regenerator diperoleh selisi temperatur maksimum 64,5 ℃, dan rata-rata putaran mencapai 153,6 rpm, menghasilkan torsi tertinggi 0,38 N.m, daya tertinggi 6,236 Watt, dan efisiensi tertinggi sebesar 68,4 %. Penambahan regenerator pada mesin Stirling menyebabkan penurunan performansi, ini dimungkinkan karena terjadi penurunan tekanan fluida didalam mesin karena mesin Stirling mCHPSE-012020 masih menggunakan tekanan atmosfir sebagai tekanan kerja.

Pengaruh Variasi Temperatur Sumber Panas Terhadap Temperatur Udara Dalam Heater Mesin Stirling Zufri Hasrudy Siregar; Jufrizal; Moraida Hasanah; Muhammad Dendy Agusdiandy
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 1 (2022): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.348 KB)

This research is focused on testing the heat transfer rate from the heat source to the Stirling engine heater. The test was carried out on the Stirling engine heater as a cylindrical tube. This study aims to determine the effect of variations in the heat source's temperature on the heater's air temperature. This test was carried out on a Stirling engine with a gamma-type mechanical configuration. The heat source temperature varied in 3 categories, namely between 860-900℃ (I), 780-850℃ (II), and 710-779℃ (III). there were 3 temperature positions measured, namely the temperature of the heat source, the temperature of the outer wall of the heater, and the temperature of the air in the heater. The fuel used for the heat source is liquefied petroleum gas (LPG). The research results for the heat source temperature in categories I, II, and III resulted in the average temperature on the outside heater wall being 729.8°C, 659.6°C, and 591.3°C, respectively. While the average air temperature in the heater for categories I, II, and III, respectively, is 201.7°C, 130.1°C, and 114.8°C. The 3 variations of heat source temperature show that the given heat source temperature value is very influential and directly proportional to the temperature inside the heater.

Uji Kinerja Burner LPG Mesin Stirling dengan Variasi Kosumsi Bahan Bakar Mawardi; Jufrizal; Muhammad Hidayah
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 1 (2022): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (525.416 KB)

This study focuses on testing the ability of the LPG burner used in the Stirling engine. The LPG burner combines the fuel flow rate, air flow rate, and flame to produce combustion. This test uses a modified burner and is analyzed by the water boiling test method. The study aimed to determine the thermal efficiency, fuel flow rate, and burner power of the Stirling engine LPG with variations in fuel consumption. Variations in the flow rate of LPG fuel are carried out using a conventional LPG gas burner and turning device with the minimum, medium, and maximum settings. The results showed that the three variations of the mass flow rate of fuel at the minimum conditions had higher efficiency and low fuel consumption, but the burner power produced was very low; namely, 1,714 kW, compared to the medium and maximum requirements. The thermal efficiency parameter value at the minimum condition is 49.91%, and fuel consumption is 0.000036 kg/second or equivalent to 1296 grams/hour. The maximum burner power produced during the test was 4,487 kW.

Uji Kinerja Burner LPG Mesin Stirling dengan Variasi Tekanan Bahan Bakar Jufrizal Jufrizal; Mawardi Mawardi; Fandy Ramadhan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 2 (2022): Agustus
Publisher : CV. IRA PUBLISHING

This paper is the result of initial research on the development of an LPG burner planned for the Gamma-type Stirling engine. The purpose of this study was to determine the effect of variations in fuel pressure on flame temperature and mass flow rate of fuel in LPG burners. This research method was carried out experimentally by varying the fuel inlet pressure on the regulator to the LPG burner from high to low. The LPG fuel used is 3 kg LPG produced by PT Pertamina (Persero). The pressure drop in the LPG gas tanks was varied and observed in a range of values between 20-17.5 kg/cm2, 15-12.5 kg/cm2, and 10-7.5 kg/cm2. In testing 20-17.5 kg/cm2, 15-12.5 kg/cm2, and 10-7.5 kg/cm2 the average fire temperature is 724.6°C, and 743.6°C respectively. , 631.4°C. Meanwhile, the mass flow rate of the fuel according to the order of pressure variations was 0.131 kg, 0.264 kg, and 0.162 kg respectively for 1 hour of testing. The temperature and mass flow rate of the fuel produced will be the basis for consideration in the Stirling engine design.

Uji Kinerja Burner Gas LPG Mesin Stirling dengan Variasi Laju Aliran Udara Jufrizal Jufrizal; Zufri Hasrudy Siregar; Tengku Jukdin Saktisah; Bintang Kelana Putra; Muhammad Novrin Rizky Syahputra
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 2 (2022): Agustus
Publisher : CV. IRA PUBLISHING

A burner is a tool used to heat the heater as a source of initial heat whose heat functions to drive the Stirling engine. The burner used in this test is self-designed. The purpose of this study was to determine the temperature profile, fuel consumption used, power on the burner, and the efficiency of the Stirling engine burner with variations in air flow rates. Variations in the airflow rate used in this study were 2 m/s, 2.5 m/s, and 3 m/s. This research method was carried out experimentally and analyzed by the water boiling test method. The results of the three variations of air flow rate show that the highest temperature occurs in the Stirling engine burner with an airflow rate of 3 m/s of 813,815℃, for fuel consumption with variations in air flow rate of 343 gr, Stirling engine burner power with variations in air flow rate 2 m/s, 2.5 m/s, and 3 m/s produce the same power of 4.48 kW, and the highest efficiency on the Stirling engine burner is obtained at an airflow rate of 3 m/s of 38.33%.

Co-Authors Bintang Kelana Putra Bintang Kelana Putra Eswanto, Eswanto Fandy Ramadhan Irfandi Irfandi, Irfandi Mawardi Mawardi Moraida Hasanah Muhammad Dendy Agusdiandy Muhammad Hidayah Muhammad Novrin Rizky Syahputra Siregar, Zufri Hasrudy Sutrisno, Franky Tengku Jukdin Saktisah

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