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"Turbin Gas Mikro Proto Bioenergi X-2a adalah suatu alat penghasil daya berskala kecil dengan prinsip kerja mengonversi energi fluida menjadi energi mekanik dengan mengimplementasikan energi baru terbarukan yang bersifat ramah lingkungan. Turbin Gas Mikro Bioenergi Proto X-2a memiliki berbagai komponen dengan karakteristik yang berbeda-beda yang berfungsi menunjang performa fisiknya, salah satu komponen yang terpenting dan berpengaruh terhadap performa Turin Gas Mikro Bioenergi Proto X-2a adalah turbin. Peningkatan performa turbin dalam penelitian ini dilakukan secara eksperimental dengan pengujian Turbin Gas Mikro Bioenergi Proto X-2a dan analitikal yaitu dengan cara menganalisis aliran pada dua model runner berbeda di sisi kompresor tingkat 1. Analisis aliran ini dilakukan berdasar pada metode CFD dengan variabel bebas berupa laju alir bahan bakar yang didapat dari pengujian Turbin Gas Mikro Proto Bioenergi X-2a dua tingkat. Analisis ini bertujuan mengetahui pola aliran di sekitar runner dan pengaruh laju bahan bakar terhadap torsi yang dihasilkan runner. Hasil dari pengujian menyebutkan bahwa peningkatan laju alir bahan bakar mengindikasikan putaran dan laju udara yang meningkat. Model runner dengan casing menghasilkan putaran dan torsi lebih baik daripada model runner tanpa casing karena aliran lebih terarah terhadap sudu. Penelitian ini diharapkan dapat meningkatkan performa Turbin Gas Mikro Bioenergi Proto X-2a di masa mendatang.

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Micro Gas Turbine (MGT) Bioenergy Proto X-2a is a machine which can produces power in small scale with converting fluid energy to kinetick energy working principle and implementing renewable energy which could saved our fossil energy and environment. MGT have some components with different charactericstic with another which could affected with its performance, turbine is one of critical component in MGT and very affected to MGT performance. Increasing turbine performance can doing experimentaly with running MGT and analyticaly with flow analysis in runner between two different models in the side of first stage compressor. This analysis respectively based on CFD method with fuel flow rate as free variable which getting from running MGT Proto X-2a. Object from this research is knowing flow pattern around runner and effect of mass fuel to runner torsion. The result from this experiment is increasing mass fuel will indicated increasing of rotation dan air flow rate. Runner model with casing can produce higher rotation and torsion than runner without casing because air flow can direct to blade of runner effectively. This research will improved continuously in order MGT performance can increasing."

"This study uses biogas, an environmentally friendly renewable energy resource, to operate the prototype of a micro-gas turbine (MGT) system called the Proto X-3 Bioenergy Micro-gas Turbine, designed for green building application. The biogas is produced by an anaerobic digester. The aim of this research is to simulate slurry flow in an anaerobic digester as the basis for developing a biogas digester that will produce biogas to meet the requirements of the Proto X-3 Bioenergy Micro-gas Turbine. The digester is a rectangular type with 3.4 m3 capacity. The flow calculations and simulations were done using Computational Fluid Dynamics (CFD) methods in two-dimensional, body-fitted coordinate mesh. The simulations were conducted with various baffle clearances for the digester: 50 mm, 100 mm, and 150 mm. The CFD simulations showed that the recirculation phenomena was found in all flows but that the 50-mm baffle clearance model had the largest recirculation, and it would lead to better mixing of the slurry."