Hydrodynamic Analysis Inside a Circulating Fluidized Bed Boiler Based on Time Change Using CFD

Authors

  • Tony Suryo Utomo Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia
  • Eflita Yohana Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia
  • Rayhan Halim Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia
  • Mohammad Farkhan Hekmatyar Dwinanda Dept Energy Conservation & Loss Control, Engineering Development, Ref Unit V Balikpapan, PT Kilang Pertamina International, Indonesia
  • Zakaria Rahmanu Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia
  • Kwang-Hwan Choi College of Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea

DOI:

https://doi.org/10.37934/arfmts.103.1.133149

Keywords:

CFB boiler, CFD, turbulence model, time change data

Abstract

The power generation industry has progressively improved the design of power plants to tackle global climate change. Coal-fired power plants will be cleaner and more efficient with the CFB (Circulating Fluidized Bed) technology in the boiler. CFB boilers have the advantage where the resulting carbon dioxide, SOx, and NOx emissions are significantly reduced. This makes research on CFB boilers widely carried out, especially those using CFD (Computational Fluid Dynamic). This study aims to determine the most appropriate turbulence model using CFD simulations on CFB boilers to analyze the hydrodynamic elements in the boiler against time changes, including the distribution of solid volume fractions, pressure, velocity, and wall shear stress. Three turbulence models were tested as part of the simulation: standard , RNG , and RSM, which were then compared to earlier research. The RNG  model produces the closest result to the experimental data, with an error value of 6.24%. Solid volume fraction area is increasingly widespread with values ranging from 0.05 to 0.1 from the furnace’s bottom to a height of 15 m. The high-pressure area further expands at the bottom of the furnace to a height of 15 m, with values ​​ranging from 3 kPa to 10 kPa. The outlet line velocity has increased from 43 m/s to 50 m/s. The wall shear stress increases from 0.75 Pa to 1.1 Pa at the outlet wall.

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Author Biographies

Tony Suryo Utomo, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia

msktonysu1971@gmail.com

Eflita Yohana, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia

efnan2003@gmail.com

Rayhan Halim, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia

rayhanh26@gmail.com

Mohammad Farkhan Hekmatyar Dwinanda, Dept Energy Conservation & Loss Control, Engineering Development, Ref Unit V Balikpapan, PT Kilang Pertamina International, Indonesia

m.dwinanda@pertamina.com

Zakaria Rahmanu, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Semarang 50275, Indonesia

zakariarahmanu@gmail.com

Kwang-Hwan Choi, College of Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea

choikh@pknu.ac.kr

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Published

2023-03-10

How to Cite

Tony Suryo Utomo, Eflita Yohana, Rayhan Halim, Mohammad Farkhan Hekmatyar Dwinanda, Zakaria Rahmanu, & Kwang-Hwan Choi. (2023). Hydrodynamic Analysis Inside a Circulating Fluidized Bed Boiler Based on Time Change Using CFD. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 103(1), 133–149. https://doi.org/10.37934/arfmts.103.1.133149

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