TY - GEN
T1 - Numerical Study Air Preheat Coil as Porous Medium to Analyse Flow Characteristics and Improve Productivity in Muara Karang Unit 4 Steam Power Plant
AU - Pratama, Rizal Mahendra
AU - Yuwono, Tri Yogi
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2022
Y1 - 2022
N2 - Muara Karang Unit 4 operates to fulfil electric energy in Java. The gasification project was carried out in 1995, allowing Unit 4 to operate using gas. Even today, most of the operational process uses gas as the main fuel and oil as a backup. When operating with oil, the combustion airflow from force draft fan (FDF) will be preheated through a heat exchanger (HE) called air preheat coil (APC) to prevent sulphur deposition on the air heater (AH). When operating using gas, the APC is no longer needed and becomes airflow resistant. This study aims to determine the airflow and heat transfer characteristics through the APC if modules are entirely removed. This method is expected to reduce the airflow head loss, thereby automatically reducing the power required by the FDF. This study uses a numerical simulation model with computational fluid dynamic (CFD). The model used in this study is an input parameter energy equation model ON, HE model ON, the viscous model uses realizable k-ε, and APC is approached as a porous medium. The simulation was carried out at 172 MW and two modules scenarios (S0 = all modules ON and S1 = all modules OFF). The results achieved are qualitative and quantitative data. The pressure drop from 1078.4 Pa in S0 decreased to 13.6 Pa in S1. The increment air temperature also decreased from 43.6 ℃ in S0 to 0 ℃ in S1. Reducing pressure drop is proven to be effective in reducing FDF power up to 1,772,124 kWh/year.
AB - Muara Karang Unit 4 operates to fulfil electric energy in Java. The gasification project was carried out in 1995, allowing Unit 4 to operate using gas. Even today, most of the operational process uses gas as the main fuel and oil as a backup. When operating with oil, the combustion airflow from force draft fan (FDF) will be preheated through a heat exchanger (HE) called air preheat coil (APC) to prevent sulphur deposition on the air heater (AH). When operating using gas, the APC is no longer needed and becomes airflow resistant. This study aims to determine the airflow and heat transfer characteristics through the APC if modules are entirely removed. This method is expected to reduce the airflow head loss, thereby automatically reducing the power required by the FDF. This study uses a numerical simulation model with computational fluid dynamic (CFD). The model used in this study is an input parameter energy equation model ON, HE model ON, the viscous model uses realizable k-ε, and APC is approached as a porous medium. The simulation was carried out at 172 MW and two modules scenarios (S0 = all modules ON and S1 = all modules OFF). The results achieved are qualitative and quantitative data. The pressure drop from 1078.4 Pa in S0 decreased to 13.6 Pa in S1. The increment air temperature also decreased from 43.6 ℃ in S0 to 0 ℃ in S1. Reducing pressure drop is proven to be effective in reducing FDF power up to 1,772,124 kWh/year.
KW - Air preheat coil
KW - Computational fluid dynamic
KW - Porous medium
KW - Pressure drop
KW - Steam power plant
UR - http://www.scopus.com/inward/record.url?scp=85135889567&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-1581-9_20
DO - 10.1007/978-981-19-1581-9_20
M3 - Conference contribution
AN - SCOPUS:85135889567
SN - 9789811915802
T3 - Lecture Notes in Electrical Engineering
SP - 181
EP - 188
BT - Recent Advances in Renewable Energy Systems - Select Proceedings of ICOME 2021
A2 - Kolhe, Mohan
A2 - Muhammad, Aziz
A2 - El Kharbachi, Abdel
A2 - Yuwono, Tri Yogi
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 -