The need for beef in Indonesia continues to increase. In 2020, it will require imports of 300 thousand t of meat or the equivalent of 1.7 × 106 cattle a year. To overcome the problem, the biogas-energized livestock feed making machine (copper) was designed. The advantage of this copper is the process of making the livestock feed can efficient and effective. Results of the calculations, known that with increasing miller rotation output, the resulting capacity shows an increase. Also, it can use drive motors that are available on the market with a power capacity of 50 W. Hence; this machine is very efficient in the use of electricity, high economic value, convenient and easy move to other places. Electricity for the engine is designed with renewable energy, namely biogas from co-digestion substrates namely animal feed waste, kitchen waste, cow dung and excreta disposal from septic tanks. This co-generation is expected to improve the life of the breeders
Hebel brick is used in making the walls of the house. One of the materials used in making hebel bricks is sand. The water content of the sand will affect the quality of the hebel bricks. The less water content in the sand, the better the quality of hebel bricks. In order to get sand with a little water content, it is necessary to do the drying process. To overcome this problem, a rotary dryer for sand drying using renewable energy, particular biomass energy sources was designed. It can be placed in a sand quarry near a river or near a beach. It is designed to have the ability to dry the wet sand by putting it in a rotary dryer, making this drying system usable both in sunny and rainy conditions. The drying process can take place continuously using heat from biomass energy. The heat is produced from the combustion process in the biomass furnace and then distributed to the rotary dryer. The advantage of this rotary dryer system could be done continuously with a little human power. Moreover, from these calculations can be analyzed the performance of this rotary dryer machine, to determine the suitability between design calculations and test results.
Dalam rancang bangun turbin Kaplan perlu di perhatikan besar kecilnya debit air serta heat statis.Tujuannya adalah merancang bangun turbin Kaplan dengan ketinggian 4m dengan debit 0.025 l/s dengan sudu rotor 30º dan sudu stasioner 30º.Selanjutnya hasil rancang bangun turbin Kaplan di uji unjuk kerjanya.Pengujian turbin Kaplan dilakukan engan menggunakan empat buah pompa air.untuk mendapatkan debit air 17.676 l/s, 26.514 l/s, 35.352 l/s dan ketingian heat statis 4m selanjutnya mengukur putaran turbin setiap pergantian debit air dengan tachometer.Hasil rancang bangn turbin Kaplan didapatkan diameter luar sudu turbin 0,138m , diameter tengah sudu turbin 0,095m dan diameter tengah sudu turbin0,057m, sementara itu hasil dari pengujian turbin Kaplan dengan sudu rotor 30º dan sudu stasioner 30º Putaran tertinggi yang dihasilkan oleh Turbin Kaplan ini ada pada debit 35,352 l/s yaitu pada putaran 503 rpm. Putaran terendah yang dihasilkan oleh Turbin Kaplan ini, ada pada debit 17,676 l/s yaitu pada putaran136 rpm.Kata kunci: turbin kaplan, sudu, debit
To analyze buckling on a spring, an experimental and simulation test is needed at the time of subsequent loading from the test results and experiments that can later become a parameter for the manufacturing industry in designing a spring component. From the test results, based on the analysis of the occurrence of buckling over is the size of the squarew where at the squarnest 6.00 mm and 6.30 mm buckling occurs 4.00 mm and 4.20 mm while the required standard is 3 mm so that it exceeds the existing standards. After reducing the squarnest to 4.00 mm and 4.30 mm, the results of the experiment resulted in buckling 2.00 mm and 2.20 mm which met the standard of less than 3 mm. Analysis of the standard coiling machine used refers to the free length, namely 257 to 260 mm at the 6.0 mm squarnest and 5.7 mm free length of 256.0 mm and 255.0 mm, which meets the standard after improvement experiments by changing Squarnest 3.0 mm and 4.0 mm resulting free length 258.0 mm and 259.0 mm which still meet the existing standards so that it does not affect the existing standards. The results of the safety factor test for the coil spring SWP B. 7.0 can be concluded that the safety factor has met the existing standards, namely 0.1500 <1. The results of calculations using experiments in the buckling testing process on the spring are stated to have met the standards by having a safety factor. <1.
Tujuan untuk mengetahui sistem kerja pompa mobil pemadam kebakaran (fire truck), mengetahui sistem perpipaan fluida (air) pada mobil pemadam kebakaran, mengetahui ukuran pipa yang bagus digunakan pada pompa sentrifugal 1500 gpm pada mobil pemadam kebakaran. Dalam penelitian ini akan fokus meneliti perbedaan debit air, kecepatan pompa dan head loss pada pipa dengan ukuran 4in, 5in dan 6in. Sehingga dapat menentukan ukuran pipa terbaik yang digunakan dalam pompa sentrifugal 1500 gpm. Kemudian peneliti melakukan penelitiaannya di PT. Pundarika Atma Semesta yang beralamat Bogor, Jawa Barat. Peneliti menyiapakan bahan dan alat yang diperlukan. Peneliti menggunakan alat tes berupa Flow test. Selanjutnya peneliti melakukan percobaan terhadap 3 ukuran pipa tersebut sehingga memperoleh hasil debit air sebagai berikut 0,065 m³/detik 0,069 m³/detik dan 0,077 m³/detik. Dan kecepatan aliran 8 m/detik, 5,5 m/detik dan 4,22 m/detik. Dan Head Losses 0,051 meter, 0,019 meter dan 0,009 meterKata kunci: pipa, debit , kecepatan , head lossesAbstractIn this study aims to determine the fire pump work system of fire truck, know the fluid piping system on fire engines, knowing the good size of the pipe used in the 1500 gpm centrifugal pump on fire engines. In this study will focus on examining differences in water discharge, pump speed and head losses on pipes of size 4 in, 5 in and 6 in. so that it can determine the best pipe size used in centrifugal pump 1500 gpm. Then the researchers conducted their research at PT Pundarika Atma Semesta the address at Bogor, West Java. The researcher prepares the necessary materials and tools. The researchers used a test instrument in the form of a flow test. Then the researchers conducted an experiment on 3 sizes of the pipe so as to obtain the results of the water discharge as follows 0,065 m³/s , 0,069 m³/s and 0,077 m³/s. and flow speed 8 m/s, 5,5 m/s and 4,22 m/s. and head losses 0,051 m, 0,019 m and 0,009 m. Keywords: pipe, discharge, speed, head losses
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