Studi Numerik Modifikasi Sudut Β2 Impeller Induce Draft Fan Guna Optimasi Performa Centrifugal Fan

Kurniasari, Carrisa Irmalia Kurniasari (2025) Studi Numerik Modifikasi Sudut Β2 Impeller Induce Draft Fan Guna Optimasi Performa Centrifugal Fan. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 2039211065-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (12MB) | Request a copy

Abstract

Induced Draft Fan dalam proses pembangkitan tenaga listrik berperan dalam menghisap gas hasil pembakaran atau gas buang dari boiler, dan memastikan udara sisa pembakaran dapat dikeluarkan dengan efisien menuju chimney atau stuck. ID Fan harus menciptakan tekanan negatif di dalam furnace. Dengan adanya tekanan negatif, gas buang dapat dengan mudah dihisap keluar dari ruang bakar dan mengurangi risiko akumulasi gas berbahaya di dalam sistem. Disamping itu Forced Draft Fan befungsi untuk menyediakan udara primer dalam proses pembakaran. agar dapat membantu dalam menjaga aliran udara yang seimbang selama proses pembakaran. Kombinasi ini dinamakan balanced draft system. Pada penelitian kali ini Pembangkitan Listrik R memerlukan kekuatan hisap serta performa yang optimal pada ID Fan yang sesuai dengan kebutuhanan sistem pada pembakitan tenaga listrik tersebut. pembangkitan tenaga listrik yang memiliki kapasitas total 20 MW di Jayapura tersebut mengalami tekanan hisap ID Fan yang kurang membantu penurunan suhu pembakaran saat proses produksi uap berlangsung. Mengakibatkan, udara disekitar proses pembakaran terlalu panas dan Hal ini akan membahayakan pekerja yang ada di sekitarnya. Menurut beberapa penelitian adanya Modifikasi sudut outlet β2 impeller pada Induced Draft Fan sangat berpengaruh signifikan terhadap performa kekuatan hisapannya serta efisiensi operasional fan sendiri. Seperti halnya Desain Forward-Curved Impeller Sudut yang lebih besar memungkinkan aliran gas yang lebih baik dan meningkatkan volume gas. Untuk penelitian kali ini menggunakan Analisa numerik dalam membuktikkannya. Setelah dijalankan nya simulasi pada software CFD Fluent. Dihasilkan bahwa impeller dengan sudut β2 = 80° memiliki efisiensi terbesar diantara ketiga sudut yang di bandingkan, yaitu sebesar 60%. Sedangkan pada sudut β2 = 105° Unggul dalam menghasilkan tekanan total pada inlet sebesar 96,75 Pa kemudian untuk β2 = 115° paling unggul dalam kekuatan hisapnya, dengan nilai -268,26 Pa. Dari ketiga sudut yang dianalisa, semuanya memiliki keunggulannya masing – masing. Jadi tergantung pilihannya berdasarkan kebutuhan sistem milik pembangkitan R. Bagian mana yang ingin di optimalkan
=====================================================================================================================================
Induced Draft Fan in the process of generating electricity plays a role in sucking the combustion gases or exhaust gases from the boiler, and ensuring that the combustion residue air can be efficiently expelled to the chimney or stuck. The ID Fan should create negative pressure inside the furnace. In the presence of negative pressure, exhaust gases can be easily sucked out of the combustion chamber and reduce the risk of the accumulation of harmful gases in the system. In addition, the Forced Draft Fan functions to provide primary air in the combustion process. in order to help in maintaining a balanced airflow during the combustion process. This combination is called the balanced draft system. In this study, R Power Generation requires optimal suction power and performance at the ID Fan in accordance with the needs of the system in the electric power assembly. The power plant, which has a total capacity of 20 MW in Jayapura, is experiencing ID fan suction pressure which does not help reduce the combustion temperature during the steam production process. As a result, the air around the combustion process is too hot and this will endanger the workers around it. According to several studies, the modification of the angle of the β2 impeller outlet in the Induced Draft Fan has a significant effect on the suction power performance and the operational efficiency of the fan itself. As with the Forward-Curved Impeller Design, the larger angle allows for better gas flow and increases gas volume. For this study, numerical analysis was used to prove it. After the simulation is run on the CFD Fluent software. It is found that an impeller with an angle of β2 = 80° has the greatest efficiency among the three angles compared, which is 60%. While at the angle β2 = 105° Superior in producing the total pressure at the inlet of 96.75 Pa, then for β2 = 115° the most superior in its suction strength, with a value of -268.26 Pa. Of the three angles analyzed, all of them have their own advantages. So it depends on the choice based on the needs of the system belonging to the R generation.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	CFD, Induce draft fan, Kelengkungan sudut outlet β2 Impeller ==,CFD, Induce draft fan, The curvature of the outlet angle β2 Impeller
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General)
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Carrisa Irmalia Kurniasari
Date Deposited:	01 Aug 2025 02:35
Last Modified:	01 Aug 2025 02:35
URI:	http://repository.its.ac.id/id/eprint/124949

Actions (login required)

View Item