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All Journal Jurnal MIPA Jurnal Geliga Sains: Jurnal Pendidikan Fisika Wahana Fisika : Jurnal Fisika dan Terapannya Journal of Physics: Theories and Applications Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Science and Physics Education Journal (SPEJ) KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA JURNAL PENGABDIAN KEPADA MASYARAKAT QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Jurnal Pengabdian Masyarakat Bumi Raflesia Jurnal Mekanik Terapan International Journal of Applied Technology Research Jurnal Difusi PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Industrial Research Workshop and National Seminar Journal of Green Science and Technology
Muldiani, Ratu Fenny
Politeknik Negeri Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Perancangan Ruang Bakar Circulating Fluidized Bed Sebagai Upaya Perbaikan Kinerja Pembangkitan Uap Di Pabrik Tekstil Nisya Fitri Fadhila; Yanti Suprianti; Ratu Fenny Muldiani
Prosiding Industrial Research Workshop and National Seminar Vol 14 No 1 (2023): Vol 14 (2023): Prosiding 14th Industrial Research Workshop and National Seminar
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v14i1.5414

Abstract

Chain grate stoker boiler di pabrik tekstil digunakan sebagai komponen untuk memenuhi kebutuhan uap di bagian produksi. Berdasarkan standar ASME ukuran batubara untuk boiler jenis ini yaitu kisaran 32 mm. Hal tersebut juga sudah diterapkan pada SOP pabrik, namun pada pelaksanaannya ukuran batubara tidak sesuai dengan SOP tersebut melainkan kurang dari ukuran yang sudah ditentukan, sehingga mengakibatkan penurunan efisiensi. Akibatnya pabrik menggunakan tambahan bahan bakar hidrogen hasil elektrolisa air sebagai upaya meningkatkan efisiensi. Namun efisiensi hanya dapat mencapai 68%, sedangkan efisiensi standar desain 75%. Ruang bakar dengan jenis circulating fluidized bed (CFB) memiliki karakteristik yaitu efisiensi pembakaran yang tinggi, lebih ramah lingkungan, fleksibilitas bahan bakar yang digunakan dan ukuran bahan bakar ≤ 6 mm. Ruang bakar CFB memanfaatkan kondisi partikel padatan tersuspensi udara pada suatu kecepatan tertentu hingga tidak terlihat perbedaan antara padatan dan aliran udara (fluidisasi). Perancangan ruang bakar dilakukan untuk kapasitas uap 3320.156 kW pada tekanan 7 bar. Dihasilkan ruang bakar yang lebih ringkas dengan dimensi yaitu lebar 0,657 m; panjang 1,314 m; tinggi 3,035 m dengan kecepatan fluidisasi 1,409 m/s dan efisiensi 82,713%. Menggunakan ruang bakar CFB dapat mereduksi penggunaan batubara menjadi 14,876 ton yang semula 18 ton per hari dan tidak dibutuhkan biaya untuk mesin elektrolisa.
PERANCANGAN ROTARY DRYER SEKAM PADI DENGAN MEMANFAATKAN PANAS BUANG ELECTROSTATIC PRECIPITATOR INDUSTRI SEMEN ASTI DESI FITRIYANI; RATU FENNY MULDIANI; SRI WURYANTI
Journal of Green Science and Technology Vol. 7 No. 3 (2023): Journal of Green Science and Technology Vol.7 No.3 Special Edition : Applied sc
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v7i3.35

Abstract

ESP or electrostatic precipitator is a device used to capture particulate matter, such as dust, in exhaust gases using electrostatic principles. In the cement industry, ESP is commonly placed after the clinker cooler to clean the exhaust air from the cooling process, ensuring it is free from clinker dust. The clinker cooler is a device that cools down the clinker using air, reducing its temperature from an initial temperature of around 1450°C to approximately 100°C - 120°C. The exhaust air from the clinker cooler is then passed through the ESP at temperatures ranging from around 237°C to 311°C. Based on the temperature data, the exhaust air from the ESP has the potential for heat reuse for other processes, including as a heat source for drying rice husk, which is a common alternative fuel used in the cement industry and typically has a moisture content of around 25%-37%. The results of this design indicate that the exhaust heat from the ESP, with an input temperature of 275°C, is capable of drying rice straw pellets from a moisture content of 25% to 14.73% using a designed rotary dryer with a capacity of 21.6 t/h, a length of 41.58 m, and a diameter of 2.92 m. It is constructed using ASTM 283 C material with a thickness of 8.76 mm and is insulated with a 15.6 mm thick layer of aluminum foil.
PERANCANGAN POMPA SENTRIFUGAL BERKAPASITAS 50,6 L/MENIT UNTUK PEMANFAATAN AIR DARI STEAM TRAP SEBAGAI AIR UMPAN BOILER Hesti Sekar Sari; Ratu Fenny Muldiani; Sri Wuryanti
Journal of Green Science and Technology Vol. 7 No. 3 (2023): Journal of Green Science and Technology Vol.7 No.3 Special Edition : Applied sc
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v7i3.81

Abstract

Condensate water is the result of condensing steam which has decreased in temperature and pressure due to losses from the environment. Steam trap used to separate water or dew from steam resulting from a decrease in temperature. This condensate water has a temperature of 50°C. Based on the results of condensate water testing from steam trap it has permissible criteria for boiler feed. In the existing conditions, the boiler feed water requirement is 500 liters/hour with a temperature of 25°C, while the water produced from steam trap of 230 liters/hour so that to be able to meet the needs of boiler feed water, a pump designed with a capacity of 50.6 liters/minute is needed. The purpose of this research is to design a pump to utilize steam trap water as boiler feed water. Materials are selected according to requirements and standards. Condensate water from the steam trap becomes the initial parameter for calculating Head, NPSH, Impeller Diameter, and Shaft Diameter. NPSH available must be greater than NPSH request to prevent pump cavitation, which can cause damage or loss.  Based on the calculations, the NPSH req value is smaller than the NPSH available, which is 4.62 m < 11.48 m. The total head is 7.97 meters, and the number of blades is 7. The design dimensions obtained are the impeller inner diameter of 29.47 mm, outer diameter of 72.58 mm, shaft diameter of 6 mm, casing diameter of 76.215 mm.
Co-Authors Anny Suryani ASTI DESI FITRIYANI Defrianto Pratama Euis Sartika Farida Agoes Farida Agoes Hadiningrum, Kunlestiowati Hesti Sekar Sari I Gede Rasagama Ijlal Syaifullah Kunlestiawati Kunlestiawati Kunlestiowati Handinigrun Lusiani, Anie Nani Yuningsih Neneng Nuryati Nisya Fitri Fadhila Nita Henita Koesoemah nita henita koesoemah Sapto Prajogo Siti S Purwaningsih Siti Samsiyah Purwaningsih Siti Samsiyah Purwaningsih Siti Syamsiah Purwaningsih Sri Nur Yuliyawati Sri Nuryuliyawati Sri Suratmi Sri Suratmi Sri Widarti Sri Widarti Sri Wuryanti Sri Wuryanti Teguh Sasono Tri Wibianto YANTI SUPRIANTI YANTI SUPRIANTI, YANTI