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<![CDATA[Pengaruh Campuran Air-Nanopartikel CuO sebagai Coolant dan Laju Aliran terhadap Parameter Perpindahan Kalor pada Radiator ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 1 (2021): APRIL 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i1.48802
<![CDATA[The aim of this study was to determine the effect of volume fraction and fluid flow ratetowards the heat transfer parameters in the Honda Vario radiator cooling system. This study was conducted by using a test equipment which a radiator used as main cooling system. The inlet fluid temperature is constantly kept in accordance with the engine working temperature. Temperature measurements were carried out on variations in flowrate and fluid concentration using a digital thermometer.Variations used in fluid volume fraction are 0%, 0.1%, 0.3%, and 0.5%. While, the variation of the fluid is 12 lpm, 18 lpm, and 24 lpmmeasuredby a flowmeter. The highest change in the value of the heat transfer coefficient was found in the large volume fraction and flow rate. However, at higher volume fractions, the Reynlods number will tend to decrease. To get a better rate of heat transfer and cooling, a higher volume fraction and fluid flow is used. As for the flow variation, it usually adjusts to the vehicle user. The use of nanofluids will helpto reduce the heat in the radiator cooling system.]]>
<![CDATA[Pengaruh Penggunaan Fender-Frame-Drone dan Beban Terhadap Konsumsi Arus Baterai ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 2 No 1 (2020): APRIL 2020 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v2i1.48935
<![CDATA[Tujuan dari penelitian ini yaitu mengetahui pengaruh beban dan konsumsi daya baterai menggunakan frame F450 dengan frame fender. Variasi penambahan beban yaitu 0,5 Kg, 1 Kg, 1,5 Kg, dan 2 Kg dan dengan durasi terbang sama yaitu 2 menit dalam ketinggian 1 meter.Metode penelitian yang digunakan adalah eksperimen. Pengujian konsumsi daya baterai menggunakan multimeter. Data hasil penelitian dianalisis dengan cara mengamati secara langsung. Setelah mendapatkan hasil eksperimen kemudian mengolah data dan menyimpulkan hasil penelitian yang telah dilakukan, selanjutnya di tampilkan dalam bentuk grafik dan tabel. Hasil penelitian menunjukkan bahwa penggunaan baterai dari Frame F450 tanpa beban yaitu 0,625 miliamper dan 1,45833 miliamper dengan penambahan beban 2 Kg. Frame fender tanpa beban yaitu 0,444 miliamper dan penambahan beban 2 Kg yaitu 1 miliamper. Penggunaan daya baterai di buat sama dengan gram per menit. Dari data yang di dapat Jadi konsumsi daya baterai pada frame fender lebih irit dibandingkan frame F450.]]>
<![CDATA[PENGARUH CAMPURAN BAHAN BAKAR SOLAR DENGAN BIODIESEL MINYAK LEMAK SAPI (BEEF TALLOW) TERHADAP KONSUMSI BAHAN BAKAR PADA MESIN DIESEL ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 1 (2021): APRIL 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i1.48937
<![CDATA[This study aims to determine the effect of biodiesel concentration added to each variation of fuel mixture to fuel consumption in diesel motor. Variations of fuel mix between diesel and biodiesel are used B0, B5, B10, B15 and B20 While engine variations are used for 2000, 3000, 4000 rpm.The method used in this research is experiment. The production process of biodiesellemak cattle using transesterification method. Testing fuel consumption using buret. Then concludes the results of research in the form of tables and graphic. The B20 mixture is the most efficient mixture. Five variations of B20 rotation produce the lowest average fuel consumption average of 1,410 kg / hour, while for B0 the highest average fuel consumption is 1,860 kg / hour. The resulting power yield of B20 mixture produces an average power of 47,20 kW compared to pure diesel generating power of 49,86 kW. Larger than the B20 mixture, but the torsion yields the largest average on the B5 mixture of 78,7 Nm.]]>
<![CDATA[Kekuatan Tarik Material Fiber Carbon Dan Fiber Glass Berdasarkan Orientasi Serat Berbasis Matriks epoxy ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 1 (2021): APRIL 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i1.48939
<![CDATA[The use of metal materials on the variation of components was reduced because of its heavy in wieght, complex manufacture process and corrosive. Therefore composite materials with different variations was needed to be developed. The material was used in this research were Fiber glass, Fiber carbon, and Epoxy with the varying orientation angle of 0°,30°, 45°, 60°, and 90°. The composites was made by vole fraction of 30%: 70% (Matrix: reinforced). ASTM D-3039 was used to determined the tensile strength. Results shows that the angle orientation of the fiber influence in tensile strength, which the greater of fiber angle orientation made the tensile strength greater too,500 N/mm2and 620 N/mm2. The comparison of fibreglass composite with the fiber carbon composite in angle orientation of 0°, 45°, and 90° showed that the fiber carbon is greater than the fiber glass, while in the orientation of 30°and 60° fiber glass Superior. The combination of the best tensile strength based on fiber orientation was obtained by the fiber carbon with the angle of 90° and in fiber glass in 60° fiber orientation.]]>
<![CDATA[Pengaruh Warna Pelapis dan Ketebalan Lapisan Pada Proses Zinc Electroplating Terhadap Laju Korosi Baja AISI 1015 ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 1 (2021): APRIL 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i1.48940
<![CDATA[To improve the material's corrosion resistance, metal plating can be done. The main purpose of electroplating is to increase corrosion resistance and beautify the appearance with a variety of colors. The purpose of this study was to examine the effect of coating color variations on the corrosion rate of low carbon steel. The research method used was experimental. Using zinc electroplating and trivalent passivation treatment. Corrosion rate testing using the method weight loss, immersion period of 7 days with 3.5% NaCl corrosive medium. Layer thickness testing was carried out using the micro photo method. The research were obtained by directly observing the experimental results which were presented in tables and graphs. The results showed that there was an effect of coating color variations on the corrosion rate of AISI 1015 steel in the form of a decrease in the corrosion rate of each coating color variation. The lowest corrosion rate is in the black coating 0.016840030 mmpy. The layer thickness also affects the corrosion rate of AISI 1015 Steel. The higher the coating thickness in the process zinc electroplating , the lower the corrosion rate of AISI 1015 Steel.]]>
<![CDATA[Pengaruh Kecepatan Angin terhadap Daya Keluaran Turbin Angin Tipe Hellical Savonius dengan 3 Sudu ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 2 (2021): OKTOBER 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i2.52794
<![CDATA[This research aimed to find out the effect of wind speed on power output of savonius type wind turbine with 3 hellical blades. Variations of wind speed were obtained through a predetermined time and location of observation. The data collected consist of wind speed, voltage, electric current, RPM, and the power. The observation showed that wind speed affected the power turbine output. Time and location of the test that did not yield power output namely: at 09.00 am in the Marina Beach and at 12.00 pm in the GSG UNNES. The highest output power obtained at 06.00 pm in both areas. It was concluded that the wind speed in the morning and midday yield in lowest power output of turbine, while in the afternoon produce the highest power.]]>
<![CDATA[Pengaruh Saluran Inlet dan Outlet terhadap Thrust dan Kebisingan Mesin Valveless Pulse Jet ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 2 (2021): OKTOBER 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i2.52795
<![CDATA[Unlike common jet engine that had numerous moving components, pulse jet has no moving component. The aim of this study is to examine thrust and noise of valve less pulse jet engine with a volume of combustion chamber 668.66 cm3 , inlet standard size 2.54 cm with a length of 35.56 cm and variations in standard size outlets 2.54 cm, 5.08 cm and 1.52 cm. with air and gas comparison 1: 1 to 1: 6. Basic theories include Cadency effects, acoustics and resonance elements, waves and currents and Lenoir cycles. The material used is stainless steel plate and pipe with a thickness of 0.08 cm. First gas and air fuel are injected in the combustion chamber, spark plugs ignited spark fire and the engine process produces thrust. The thrust on the jet engine occurs because there is a change in the momentum of the gas flowing through the engine. The standard engine produces the highest thrust and noise 0.491 N and 60 dB, variations I 0.588 N and 63 dB, as well as variations II 0.442 N and 60 dB. The variation I is the most perfect engine combustion and the lowest engine temperature.]]>
<![CDATA[Pengaruh Tekanan Kompaksi dan Perekat terhadap Karakteristik Briket Limbah Daun Cengkeh ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 2 (2021): OKTOBER 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i2.52796
<![CDATA[Distillation process leave cloves leaf as waste that was burned as fuel. That means the leaf potential as solid fuel. This study aimed to determine the effect of compacting pressure and binder content on the characteristics of briquettes. Clove leaf waste was dried, then grinded and sieved through mesh 60. Briquetting is carried out at a pressure of 25kgf/cm2 and 50 kgf/cm2 with binder content varied from 10%, 15%, to 20%. Tests were conducted to get proximate composition (ash content, moisture content, volatile matters and fixed carbon), calorific value, density, stability, strength, and rate of combustion. The result showed that the treatments improved mainly the mechanical properties (density, stability, and strength). There was large change of volatile matter and fixed carbon value before and after briquetting but not for three variants of briquette. The calorific value decreased as binder content increased.]]>
<![CDATA[Pengaruh Variasi Kecepatan Sirkulasi Udara Terhadap Laju Pengeringan Kayu Pada Dapur Pengering Kayu ]]>
<![CDATA[Karnowo, Karnowo]]>;
<![CDATA[Al Janan, Dony Hidayat]]>;
<![CDATA[Widayat, Widi]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 2 (2021): OKTOBER 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i2.52797
<![CDATA[The aim of this research is to investigate the effect of air circulation speed variations on the rate of wood drying in the wood drying kiln. The research was carried out by installing an exhaust fan at the end of the chimney exiting the oven. The speed of the exhaust fan can be varied. Variations in circulation speed are set from 1 m/s to 8 m/s. The temperature and RH in the oven at each drying stage are maintained stable. The results obtained from the research are as follows. The sample drying rate with four pieces of mahogany wood was found to be an average of 16.6% per hour for all variations. At the greatest speed variation Vcirculation = 8 m/s, the target final moisture content (MC) reaches 4.17%, and at Vcirculation = 1 m/s (lowest), the final MC is 7.67%. So the higher the circulation speed, the greater the drying rate. However, at high circulation speeds, physical damage to the wood will occur, namely cracks on the face and ends of the wood.]]>
<![CDATA[Analisis Aliran Udara Pada Ruang Pengering Low Temperature Dryer Dengan Simulasi CFD ]]>
<![CDATA[ Jurnal Inovasi Mesin Vol 3 No 2 (2021): OKTOBER 2021 ]]>
Publisher : <![CDATA[Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang ]]>
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DOI: 10.15294/jim.v3i2.52798
<![CDATA[Food drying technology in maintaining food quality has become an attraction for the food industry. Low temperature drying was the option for drying food while maintaining the nutritional value of food remain intact. The purpose of this study was to determine the air and temperature distribution that occurred in the drying chamber using Computational Fluid Dynamic (CFD) simulations. Geometry of the drying chamber has been done previously in 3D design drawings using software. Various parameters for simulation have been used. The result showed air flowed unevenly in some shelves of drying chamber so that some adjustments were made to the geometry of the drying chamber. After several changes, the geometry of drying chamber could distribute air and heat flow evenly. The air flow into the drying chamber at 2 m/s dropped to 1 m/s upto 1,2 m/s when flow on the drying rack. While the initial air temperature of 50oC was distributed evenly on a drying rack with temperatures ranging from 45oC to 50oC.]]>
