Eswanto Eswanto
Institut Teknologi Medan

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Experiment and Analysis Briquette Cob Upon Which Burn Producer of Vapour Eswanto Eswanto; Barita Siregar; Ricad P. Girsang
Jurnal Teknik Mesin (JTM) Vol 7, No 2 (2017)
Publisher : LP2M - Institut Teknologi Padang

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In Indonesia Corn is one of the second type of food crop, this condition based on physical characteristics and corn chemical has potential as a source of biomass energy. Corncob biomass waste can be made into corncob briquettes to produce environmentally friendly alternative energy, where the utilization of biomass as energy is done by combustion in the combustion chamber, which in this case is stoker. The purpose of this research is to know the characteristics and efficiency of burning corncobs and corncob briquettes as steam-producing biomass fuels. The experimental method was experiment with combustion of corncob briquettes with 10%, 20%, 30% adhesive variation on stocker combustion chamber using air supply 0,00144 m3 / s, air excess 10% (0,00158 m3 / s), and excess Air 20% (0,00173 m3/s) with valve angle 15º, 17º, 18º, and feeding fuel 0,1 kg, 0,15 k, 0,2 kg, fuel is put into continuous combustion chamber using conveyor. The calorific value of 10% tuna corncob briquettes HHV= 8578,38 kJ/kg, LHV= 5338.38 kJ/kg, 20% adhesive HHV= 6127,41 kJ/kg, LHV= 2887,43 kJ/kg, adhesive 30% HHV= 6127,41 kJ/kg, LHV: 2887,43 kJ/kg using a calorimeter boom analysis. Temperature generated on burning 10cm tuna corncob briquettes reach 906 ºC and at the lowest temperature of 284 ºC, 20% adhesive reaches 901 ºC and at the lowest temperature of 225 ºC, 30% adhesives reach 829 oC and at the lowest temperature of 250 ºC. Efficiency of combustion chamber of briquettes 10% cobber cornet briquettes are η: 69%, adhesive 20% η = 66%, adhesive 30% η = 67%. From the results of this type of corn tuna briquette fuel with adhesive variation, fuel on 10% adhesive produces the highest temperature and efficiency.
Effect of Cyclone Diffuser Swirl throughout 30 mm On Liquid Jet Gas Pump (Application on Frying Pineapple Chips) Eswanto Eswanto
Jurnal Teknik Mesin (JTM) Vol 6, No 2 (2016)
Publisher : LP2M - Institut Teknologi Padang

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Pineapple is a plant that is widely available in Indonesia and fruit favored by the public. Some areas in North Sumatra as langkat, Binjai, Berastagi, Siborong-borong many supply pineapples to the city field, so if at the time of pineapple fruit season arrives, the city became a flood pineapple field and consequently if the fruit is not sold will be rotten. Seeing this need to utilize technology in order not rotten pineapple and wasted, therefore there is need to do an experiment to make a pineapple into chips with technology liguid jet gas pump (LJGP) which method a way with a vacuum system. From the problems necessary to study to get the best vacuum LJGP tool is one of them by adding a Cyclone vortex diffuser models. The purpose of this study is to obtain the best vacuum as well as the efficiency of LJGP that can be used in frying applications pineapple crisps vacuum method along the vortex diffuser 30 mm. The research method with experiments involving fluid water and air, by adding a Cyclone vortex Diffuser models in LJGP tool as long 30 mm. The observed data is the primary flow rate (primary flow / motive flow) is 0.32 L / s, up to 0.44 L / s and discharge secondary flow (secondary flow) ranged from 0.04 L / s to 0.2 L / s. As for the water to circulate fluid LJGP, used types of centrifugal pumps with a capacity of 340 L / min. From the research that has been done shows that the more points cyclone vortex diffuser, the secondary pressure will increase. The maximum secondary pressure in the cyclone vortex diffuser length 30 mm which is 150 215 kPa, with secondary pressure maximum of 12 GPM is present in 1,367 kPa. This condition is informed that the use of models in the vortex of Cyclone Diffuser LJGP tool is in need to improve the vacuum system for LJGP.
Jurnal Teknologi Terapan Vol 3, No 1 (2017): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.702 KB) | DOI: 10.31884/jtt.v3i1.7


In the industrialized world are required to review hearts always improving performance boost produced by industry, then the findings from the on lead or not separated from the machine using the tools the process piping systems hearts products in produced. Many of piping installation taken in connection the prayers only serves to review an distribution diverting fluid flow, split flow Being branched accordance desired. Singer study aims to determine the effect connectivity review Tee Against pressure losses due to the separation coefficient fluid flow The causes decrease in performance from the system. Operating singer research conducted experiments using a fluid air. Research data consist of variables differences free and bound variables. Data retrieval is done on with varying the diameter of the pipe branching That is ½ inch, ¾ inch and 1 inch. Research shows that more big diameter pipes which are used then branching coefficient Tee losses small increasingly is 0.2703 m, 0.17879 m and 0.0753 m, so that the debit value increase branching out Namely 16.8 liter / min, 17, 2 liters / min and 17.4 liters / min. The high Reynolds number variation on lead with diameter test sections, resulting in decreased total loss coefficient, (Re) 43 823, 39 985, 32719.8 And Htot 6.1667, 17.2, 17437. The increase in the Reynolds number (Re) will affect against losses pressure (h) at every connection.
Jurnal Momentum ISSN 1693-752X Vol 18, No 1 (2016): Volume 18 No. 1 Februari 2016
Publisher : ITP Press

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Liquid Jet Gas Pump (LJGP) adalah suatu peralatan sederhana dengan memanfaatkan dua fluida berbentuk liquid dan gas. Peralatan ini dalam proses kerjanya tanpa menggunakan bagian-bagian yang bergerak sehingga konstruksinya menjadi sederhana dan mudah didapatkan dalam proses desain maupun instalasinya. LJGP mempunyai  peralatan utama yaitu section chamber, nosel throat dan diffuser. Tujuan penelitian ini adalah untuk mendapatkan kondisi vakuum pada alat  LJGP. Metode penelitian dilakukan dengan eksperimen menggunakan fluida air dan udara pada area ratio 0,65, panjang throat 3,5dT. Data yang diamati adalah debit aliran primer yaitu 6-10 GPM dengan interval 1 GPM dan debit aliran sekunder (secondary flow) 5-30 L/s. Sedangkan untuk mensirkulasikan fluida air ke LJGP,digunakan pompa sentrifugal dengan kapasitas 340 L/menit (400 watt).  Hasil penelitian yang telah dilaksanakan menunjukkan bahwa pada debit aliran 10 GPM tekanan vakum terjadi pada kondisi paling rendah yaitu 14,56 kPa pada 5 scfh. Kondisi tersebut menginformasikan bahwa semakin besar atau bertambahnya  tingkat pemasukan debit aliran primer menyebabkan terjadinya kondisi vakum yang rendah. Sedangkan kondisi vakum tertinggi diperoleh pada debit aliran 7 GPM pada 30 scfh, dimana nilainya mencapai 96,95 kPa. Peningkatan debit aliran sekunder menyebabkan penurunan kecepatan aliran motive pada sisi keluar nosel dengan dimensi throat konstan 3.5dT. Menurunnya kecepatan tersebut akan diiringi dengan menurunnya tekanan vakum.   Sementara itu bertambahnya debit aliran primer menyebabkan terjadinya peningkatan tekanan vakum dan debit aliran sekunder. Kata kunci :debit aliran primer, debit aliran sekunder, Gas, liquid, LJGP