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All Journal Media Mesin: Majalah Teknik Mesin Dinamika Teknik Mesin Jurnal Teknik Mesin Indonesia KURVATEK Eksergi: Jurnal Teknik Energi Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Daru Sugati
Institut Teknologi Nasional Yogyakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Journal : KURVATEK

 1 
Pengaruh Profil Sudu Terhadap Koefisien Daya Turbin Gorlov Eka Yawara; Yohannes Agus Jayatun; Daru Sugati
KURVATEK Vol 1 No 2 (2016): November 2016
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v1i2.235

Abstract

Masalah keterbatasan penyediaan sumber energi dari energi fosil diatasi dengan optimalisasi sumber energi terbarukan, misalnya sumber daya dari air. Salah satu kendala yang dihadapi dari penyediaan pembangkit daya air berskala besar adalah problem lingkungan. Oleh karena itu pembangkit daya air skala kecil atau mikro terus diupayakan pengembangannya, misalnya penggunaan Turbin Gorlov yang memanfaatkan potensi air dengan head rendah atau sangat rendah. Pada penelitian ini dilakukan studi pengaruh profil sudu terhadap koefisien daya pada Turbin Gorlov. Penelitian dilakukan dengan cara simulasi menggunakan perangkat lunak SolidWorks. Profil yang dipilih adalah NACA0012, NACA0017 dan NACA0022, selanjutnya sudu dipuntir dengan sudut puntir 30o, 60o dan 90o. Pada rasio tip-speed yang ditetapkan sebesar 2, hasil terbaik diberikan oleh Turbin Gorlov dengan profil NACA0017 dan sudut puntir 30o, yaitu rata-rata 17,3%.
THE PERFORMANCE OF THE SHELL AND TUBE COUNTER FLOW HEAT EXCHANGER GASES FOR AGRICULTURAL DRYERS Dandung Rudy Hartana; Eka Yawara; Daru Sugati; Amat Agus Salim
KURVATEK Vol 7 No 2 (2022): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v7i2.3761

Abstract

Abstract—One of the important post-harvest processes of rice is drying. Drying is divided into two, namely natural drying (using sunlight) and artificial drying (using tools). In this study drying utilizes heat from a biomass furnace and a configuration of heat exchanger pipes. Where the utilization of heat and the configuration of heat exchanger pipes in the design can increase thermal efficiency because the exhaust hot air mixed with smoke can still be used for drying. The configuration of the heat exchanger pipe greatly influences the expected moisture content level. The purpose of this study was carried out to determine the performance of the shell and tube counter flow heat exchanger for agricultural dryer gases with a heat source from biomass and to find the effect of the configuration of the heat exchanger pipe arrangement on the working process of the drying machine. This research is an experimental test of the performance of heat exchange pipes with a heat source from a biomass furnace. The exchange pipe performance parameters that must be known are temperature and time. The method used in this study refers to experimental and descriptive methods, namely research conducted in a systematic, factual and accurate manner. The results of this study are that the heated air flow rate affects LMTD, heated air outlet temperature, heat transfer coefficient, and efficiency, with variations in the heated air flow rate of 0.11 kg/s, 0.16 kg/s, 0.20kg/s, 0.24kg/s. Highest efficiency of 94% at a heated air flow rate of 0.24 kg/s. and the smallest efficiency of 74% is found in the value of the heated air flow rate of 0.11 kg/s. Keywords : dewatering, biomass, pipe configuration, heat exchanger pipe
EFFECT OF AIR FLOW RATE ON AIR-LIFT- PUMP Amat Agus Salim; Edi Susanto; Daru Sugati; Harianto
KURVATEK Vol 7 No 2 (2022): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v7i2.3777

Abstract

Airlift pump is a series of tools used to transport water and air cargo (muddy) from one place to another. The Airlift pump work system through the pipe media by injecting air into the channel under the submerged pipe. The air pressure from the aerator will push the air to move upward in the same direction through the pipe. Viscous liquids or sludge can be raised using an air-lift-pump. The buoyant force from the air can cause the heavy hydrostatic liquid to become smaller because the air used in the air-lift-pump is injected at the bottom of the pipe. This study used an experimental method by varying the air discharge ratio and using different air injectors. The purpose of this study was to determine the effect of variations in the injection discharge ratio on pump performance and to find the best efficiency for each variation made. The test was carried out with 3 different injector pipes (0.80 mm, 0.54 mm, 0.31 mm). The results showed that variations in the air discharge ratio greatly affect the efficiency and flow rate of water. The highest efficiency occurred in an injector with a diameter of 0.8 mm by 4.1% and the highest efficiency occurred in an injector with a diameter of 0.31 mm by 1.3%. Variation of air discharge with a greater value then the efficiency value will decrease. The water flow rate also changes because the greater the air discharge given, the greater the value of the water flow rate. Keywords : airlift pump, efficiency, variasi rasio debit udara, injector
Co-Authors A.N. Rohman Amat Agus Salim Amat Agus Salim Amat Agus Salim Andriyanto Setyawan D.S. Pamuji Dandung Rudy Hartana Edi Susanto Eka Yawara Eka Yawara Eka Yawara Endik Syah Rival F. Akbar Fal dian Harianto Harianto Hendri Hermawan Adinugraha Pra tikto Ratna Kartikasari Yohannes Agus Jayatun Yusril Yusril