TY - GEN
T1 - Numerical Simulation of the Effect of SA/PA on Combustion and Flow Characteristics in a Front-Rear Burner 400 MWe Boiler
AU - Kusnadi, Dimitra Meidina
AU - Widodo, Wawan Aries
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - This paper will discuss computational fluid dynamics (CFD) modeling based on a 400 MWe boiler with the once-through tower type which is operated using low-rank coal to determine the effect of secondary air and primary air (SA/PA) ratios on boiler performance. This model was made with confidence after conducting an independence test and validation data on the boiler design. Then the boiler is simulated with SA/PA ratio conditions with different values, namely, 4.89, 3.87, and 3.15. The results show that the recommended SA/PA ratio, in this case 4.89 and 3.15, indicates a lower temperature value and lower flue gas flow velocity, which is also related to the ideal gas. The heat is too high which can potentially cause local heating and slagging in the heat exchanger area. However, low temperatures also indicate a decrease in boiler efficiency. It can be concluded that the SA/PA ratio based on recommendation can produce a temperature that is not too high which is good enough for avoiding slagging, fouling, and local heating but can reduce the efficiency of the boiler. where the low temperature is caused by the increasing number of primary air used can reduce the temperature in the combustion chamber.
AB - This paper will discuss computational fluid dynamics (CFD) modeling based on a 400 MWe boiler with the once-through tower type which is operated using low-rank coal to determine the effect of secondary air and primary air (SA/PA) ratios on boiler performance. This model was made with confidence after conducting an independence test and validation data on the boiler design. Then the boiler is simulated with SA/PA ratio conditions with different values, namely, 4.89, 3.87, and 3.15. The results show that the recommended SA/PA ratio, in this case 4.89 and 3.15, indicates a lower temperature value and lower flue gas flow velocity, which is also related to the ideal gas. The heat is too high which can potentially cause local heating and slagging in the heat exchanger area. However, low temperatures also indicate a decrease in boiler efficiency. It can be concluded that the SA/PA ratio based on recommendation can produce a temperature that is not too high which is good enough for avoiding slagging, fouling, and local heating but can reduce the efficiency of the boiler. where the low temperature is caused by the increasing number of primary air used can reduce the temperature in the combustion chamber.
KW - Combustion
KW - Computational fluid dynamics
KW - SA/PA ratio
UR - http://www.scopus.com/inward/record.url?scp=85137091952&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-0867-5_35
DO - 10.1007/978-981-19-0867-5_35
M3 - Conference contribution
AN - SCOPUS:85137091952
SN - 9789811908668
T3 - Lecture Notes in Mechanical Engineering
SP - 293
EP - 300
BT - Recent Advances in Mechanical Engineering - Select Proceedings of ICOME 2021
A2 - Tolj, Ivan
A2 - Reddy, M.V.
A2 - Syaifudin, Achmad
PB - Springer Science and Business Media Deutschland GmbH
T2 - 5th International Conference on Mechanical Engineering, ICOME 2021
Y2 - 25 August 2021 through 26 August 2021
ER -