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MEKANIKA – Jurnal Teknik Mesin Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya Jalan Semolowaru No. 45, Surabaya 60118 Telepon: (031) 5931800 Negara: Indonesia
Location
Kota surabaya,
Jawa timur
INDONESIA
MEKANIKA - JURNAL TEKNIK MESIN
Published by Universitas 17 Agustus 1945 Surabaya
ISSN : 24603384     EISSN : 26863693     DOI : belum tersedia
Core Subject : Science, Engineering,
Energy Engineering Mechanical Engineering
MEKANIKA – Jurnal Teknik Mesin adalah jurnal ilmiah yang diterbitkan oleh Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya. Jurnal ini bertujuan untuk mewadahi hasil-hasil penelitian, studi eksperimen, kajian analitis, maupun pengembangan teknologi di bidang keteknikan, khususnya teknik mesin. Ruang lingkup jurnal meliputi termodinamika, perpindahan panas, sistem pendingin dan tata udara (HVAC), energi terbarukan, konversi energi, mekanika fluida, desain mesin, manufaktur, sistem kontrol mekanik, dan otomasi teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 16 Documents
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Search results for , issue "Vol 1 No 01 (2015): July" : 16 Documents clear
NOZZLE DAN SUDUT BUANG SUDU TERHADAP DAYA DAN EFISIENSI MODEL TURBIN PELTON DI LAB. FLUIDA ., Supardi; Prasetya, Endra
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Pelton turbine is one of the impulse turbines, wherein the turbine is able to transform the water potentialenergy into kinetic energy by using a nozzle. The water that comes out of the nozzle with high speed at atmosphericpressure hit the bucket which consists of two symmetrical parts. After hit the bucket, the direction of the flowvelocity change resulting in a change of momentum (impulse), consequently rotating turbine wheel generatesmechanical energy. As well as pelton turbine models in laboratory fluid which has been studied by R. HartonoTeguh in his finally task in 2006 on Experimental studies Determining Characteristics of Model Redesign Peltonturbine in Lab. Fluid. Assess experimental this time aimed at the development which also examines the peltonturbine models to determine the effect of variations in the diameter of the nozzle and the angle of the bucket waste ofthe generated power and efficiency. Variation used is the diameter of the nozzle 6 and 9 mm with exhaust bucketangle 145o, 165o, and 175o. Pelton turbine models that were tested using a single nozzle, with a number of buckets22 pieces, as well as using a runner diameter of 150 mm. Dimensional bucket used has several main dimensions,namely the width of the bucket 36 mm, bucket length 27 mm, bucket depth of 8.10 mm, bucket gap width of 10.8 mm,and the distance of the center beam bucket Valentine of 13.5 mm. From the data obtained by tests performed powerand the largest turbine efficiency at variation of 6 mm diameter nozzle at an angle of 175o bucket exhaust i.e. 38.76Watts with an efficiency of 82.80%. The largest generator power can be achieved in the variation of 6 mm diameternozzle at an angle of 175o bucket exhaust i.e. 10.4 Watt, while the best efficiency occurs at the nozzle 9 mm diametervariation with angle of 175o exhaust bucket that is 50.61%.Keywords: Pelton Turbine, and Power Efficiency
PEMANFAATAN ELEKTROLISA AIR SEBAGAI ALRENATIF PENGHEMAT BAHAN BAKAR SEPEDA MOTOR HONDA 100 CC Utomo, Gatut Prijo; Wijaya, Rhony Mukti
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

The fuel consumption of vehicle increasingly very important, with bigger CC fuel consumption moreincreasing. The continuously fuel consumption will be caused world energy crises indication, Therefore it isnecessary an effort of alternative energy use in order to create good energy balance. In this research tested andcompared between pure gasoline and hydrogen gas-added fuel (HHO) that result in through water electrolyteprocess. From the gas hydrogen (HHO) producer tool testing with vary long variation of electrode, that are : L =60 mm, and L = 80 mm, d = 15 mm with electrode range of 5 mm. Based on testing analysis that pure gasolinewith volume 10 ml in engine circle of 6000 Rpm, produce effective power 4,7 Hp over within 47,3 seconds. Specificfuel consumption (Sfc) as 0,116 kg/hp . h, and thermis efficiency as 48,1%. While fuel with volume 10 ml of hydrogen gas-added fuel (HHO) using electrode L = 60 mm, d = 15 mm with electrode range of 5 mm in enginecircle 6000 Rpm, produce effective power 4,9 Hp over within 66 seconds. Specific fuel consumption (Sfc) as 0,078kg/hp . h, and thermis efficiency as 71,8%. In engine circle and gasoline volume is same and in similar conditionuse electrode L = 80 mm, d = 15 mm with electrode range of 5 mm, resulting in effective power 5,0 Hp over within64 seconds, Specific fuel consumption (Sfc) as 0,079 kg/hp . h, and thermis efficiency as 70,3%. hydrogen gas-addedfuel (HHO) gained from electrolyte result can be increase engine effective power and engine thermis efficiency aswell as fuel consumption (Sfc).Keywords : electrolyte, HHO, fuel, alternative energy
ANALISA PENGARUH VARIASI TEMPERATUR DAN WAKTU AGING PERLAKUAN PANAS T6 TERHADAP FAKTOR EFETIVITAS REM (FER) DAN KEKERASAN PADA PIRINGAN CAKRAM DARI BAHAN KOMPOSIT ABU DASAR BATU BARA Seputro, Harjo; Fanani, Ahmad Arif
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Be able to change the different characteristics and potential of these results, showing that the Metal Matrix Composite showed an increase in physical and mechanical at any properties. With increasing weight percentage ofparticles in the matrix aluminum metal reinforcement makes a low wear rate against diks manufacture brake.Aluminium composite that bottom ash coal with Mg alloy and SiC factor that could affect the properties of thecomposite, particle distribution amplifier in a metal matrix. From the results of research to get the final hardnesstesting and FER. Effect of aging temperature on the value of FER and violence is in the range of temperature that isvalidated, the higher the aging temperature FER value increases, so does the value of violence. The highest FERvalue for 1.34 reached tepmeratur aging 200 0C and highest hardness value is achieved at temperatures of 180 C.Effect of aging time variation of the value of FER and violence is at varied time spans, the longer aging FER valuethus increased, so did the value of violence. The highest FER value of 1.34 was achieved in a period of 7 hours andachieved the highest hardness value of 7 hoursKata kunci : Aluminium komposit abu dasar batu bara.
ANALISA LAJU PANAS RATA-RATA PADA ALIRAN MASSA GARAM TERHADAP PENGARUH PUTARAN ULIR DAN BUKAAN KATUP REGULATOR GAS ELPIJI DI MESIN PENGERING GARAM YODIUM Martini, Ninik; Khadarisman, Erick
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Dry season, especially on the industrial salt drying small one "ocean salt production" Banjarwati village, Paciran, District of Lamongan. drying the salt by means of drying the salt air is free and takes a long time reaches afull day to get the salt with an appropriate water content before being packed and sold. during the rainy season saltdrying using oven-rise that is with a simple tool that uses a direct ignition from below the results of these tools lessthan the maximum drying them salt is still dirty, charred and only produce 200 kg of salt ready for use per day,while the demand is very high as 1,000 kg / day and is unable to meet consumer demand every rainy season comes. This study aims to help small industries during the rainy season by making, "iodine salt drying machine"Conductresearch methods on the tool with variable rotation screw shaft including is15rpm, 20rpm, 24rpm and valve opening(valve) with LPG gas regulator ¼ open valve, ½ open valve, 1 open valve.After analysis on the results of the testingare the best tool that is "open valve ½ (valve) LPG gas regulator and a round screw shaft 20 rpm" and get a hotpace (q) of 666.4 joules / second at 20kg of salt mass flow rate, and levels of water an average of 5% in accordancewith the quality of iodized salt consumption (MOH, 2005). This analysis can be used as a solution to increase theproduction capacity of salt during the rainy season arrives. so that the maximum drying by using "iodine salt dryingmachine" compared with the air drying salt-free.Keyword :
KAJI EKSPERIMENTAL PENGARUH VARIASI DIAMETER NOZZEL DAN JUMLAH SUDU TERHADAP DAYA DAN EFFISIENSI PADA PROTOTYPE TURBIN PELTON DI LAB. FLUIDA ., Supardi; Ridwan, Moh.
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Review of experimental effect of variations in the diameter of the nozzle and the amount of bucket on thepower and the efficiency on prototype pelton turbine in the Lab. Fluid. The aim of this study wants to know the effectof variations in the diameter of the nozzle and amount of the bucket to the power and efficiency of the existing peltonturbine prototype in the laboratory Fluid in the Pico-hydro scale. The steps in this research include the study ofliterature and field studies, designing, manufacturing of test equipment, testing, data analysis, and conclusions.Variation is done using nozzle diameter (dn) 6 mm and 9 mm, β2 at 165o, amount of bucket (Z) 12 units, 17 units,and 22 units. For the runner has a large diameter of 150 mm, while for the power plants or generators using spooland magnet on motorcycles. Results of this testing is the largest input power (Pin) at d 6 mm with a value of 46.81watts. The largest turbine power (Pt) and turbine efficiency (ηt) at dnn = 6 mm with Z = 12 unit with value P= 40,34watt and ηt =86,18 watt. The largest generator power (Pgen) at d = 6 mm with Z = 22 unit with value 9,6 watt,meanwhile for the largest generator efficiency (ηgenn) and the largest efficiency system (ηsis) at d= 9 mm with Z = 22unit with value ηgen = 54,24 % and η= 25,82 %.Keywords: Pelton Turbine, Bucket, Nozzle, Power and Efficiency
ANALISA PENGARUH VISCOSITAS LUMPUR DAN VARIASI DIAMETER PIPA ISAP LUMPUR TERHADAP KAPASITAS ALIRAN PADA MESIN POMPA PENYEDOT LUMPUR Utomo, Gatut Prijo; Julianto, Wawan
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Nowadays, we find several places in towns which hit by floods, it happen because some things, for example water duct which is gagged because of a bunch of rubbish, a small duct just make the water overload, and a shallowduct because of mud sediment. Because of the problem above, there is an idea to design a process to make a simpletool named piping installation on the pump vacuum of mud. This research method is used to analyze the influence ofmud viscosity and diameter variation of mud suction pipe to the flow capacity of mud vacuum pump machine. Eachof mud viscosity diameter 1,1225 N.s/m², 1,1849 N.s/m². And diameter variable of mud pump vacuum 0,0127m,0,0191m, 0,0254m. The examiner tries to do this observation in each variable for three times. From the statementabove, it can assume that the higher value of mud viscosity the lower of pipeline capacity. In each higher viscosity(η) = 1,3003 N.s/m², in diameter of mud pump vacuum 0,0127m, Q = 0,0002886 m³/s, in diameter of mud pumpvacuum 0,0191m, Qoutout = 0,0002975 m³/s, in diameter of mud pump vacuum 0,0254m, Qout = 0,0003667 m³/s.Meanwhile, in trial diameter variation of mud suction pipe, the bigger diameter of mud suction pipe the higher ofpipeline capacity. So the higher of pipeline capacity is happen in diameter of mud suction pipe 0,0254m with Q =0,0003984 m³/s. The higher pipeline viscosity (Q) is happen in diameter of mud suction pipe 0,0254m which is(Qin) = 0,0001784 m³/s and resulting (Q) 0,0003984 m³/s. outinKeywords: Mud pump vacuum, diameter variation of mud suction pipe.

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