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Candra Damis Widiawaty
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Analisis Variasi Sudut Tilting Burner Terhadap Distribusi Temperatur pada Boiler Furnace Abi Tonjo Buono; Candra Damis Widiawaty; Cecep Slamet Abadi
Jurnal Mekanik Terapan Vol 1 No 1 (2020): Mei 2020
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v1i1.3325

Abstract

Tangentially fired pulverized-coal boiler dilengkapi fasilitas tilting burner, dimana fasilitas ini memungkinkan burner untuk dapat diarahkan ke atas maupun ke bawah membentuk sudut tertentu terhadap garis horizontal. Sudut tilting burner berfungsi untuk mengontrol posisi vertikal pembakaran dan juga ukuran nyala api untuk menghasilkan distribusi temperatur yang seragam ke semua tube boiler. Sudut kemiringan yang tidak akurat dapat menyebabkan penyebaran panas tidak merata dan temperatur lokal yang tinggi pada salah satu sisi tube. Dalam penelitian ini, model numerik dikembangkan dan divalidasi dengan data eksperimental yang diperoleh dari pengukuran di tempat untuk menyelidiki efek sudut tilting burner terhadap pembakaran. Turbulensi, perpindahan panas dan reaksi kimia dalam ruang bakar direproduksi secara rinci oleh model. Pada penelitian ini, variasi sudut tilting yang dilakukan adalah +20o, +10o, 0o, -10o, dan -20o terhadap garis horizontal. Perubahan ini dibandingkan dengan sudut tilting 0o. Perubahan sudut tilting +10o akan menaikkan temperatur furnace 90oC serta temperatur flue gas pada outlet furnace 40oC.. Perubahan sudut tilting +20o, akan menaikkan temperatur furnace 170oC serta temperatur flue gas pada oulet furnace 90oC. Perubahan sudut tilting -10o akan menurunkan temperatur pada furnace 130oC, dan temperatur flue gas pada outlet furnace 20oC. Sementara perubahan sudut tilting -20o, akan menurunkan temperatur pada furnace 190oC, dan temperatur flue gas pada outlet furnace 90oC. Sudut tilting yang paling sedikit area yang terkena overheating yaitu sudut tilting 0o.
Pengembangan Model Pembangkit Listrik Tenaga Picohydro Tipe Turbin Cross Flow Head Rendah Gun Gun R Gunadi; Jusafwar; Candra Damis Widiawaty; Machfud Priyo Utomo; Ramdana Ajie Satria; Muhammad Raihan Abimanyu; Adi Syuriadi; Dianta Mustofa Kamal; Rosidi
Infotekmesin Vol 13 No 2 (2022): Infotekmesin: Juli, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i2.1527

Abstract

The provision of food, energy supply, and the provision of information are The food provision, energy supply, and information delivery are controlled to improve people's welfare. In 2011, the national electricity production by PLN was 11% new and renewable energy. 6% hydropower and 5% geothermal. PLN plans the geothermal to be 13% and hydropower to be 6%. The availability of independent PhPP has been built by many communities. PhPP with a waterwheel drive provides a capacity of about 100 watts thus it is only enough for home lighting, whereas the hydro energy potential of the area is quite abundant. The development that has been carried out has several weaknesses; PhPP plump turbine type requires a high head which becomes a constraint for agricultural irrigation, in the other hand PhPP waterwheel type has low efficiency. The research was conducted to develop PhPP low head cross-flow turbine type, which is more efficient. The development begins with the experiment of the PhPP cross-flow turbine model to optimize the ratio of the diameter and width of the runner. A preliminary case study provides experimental results for a cross-flow turbine's torque and power parameters at a flow rate of 0.053 m3/s. Changes in the turbine diameter and width ratio are optimum at a runner width of 10 cm.
Co-Authors Abi Tonjo Buono Adi Syuriadi Cecep Slamet Abadi Gun Gun R Gunadi Jusafwar Kamal, Dianta Mustofa Machfud Priyo Utomo Muhammad Raihan Abimanyu Ramdana Ajie Satria Rosidi