Abstract
This paper presents a CFD analysis of the flow, velocity and temperature distribution in a 700 MW tangentially coal-fired boiler operating in Malaysia. The main objective of the analysis is to gain insights on the occurrences in the boiler so as to understand the inherent steam temperature imbalance problem. The results show that the root cause of the problem comes from the residual swirl in the horizontal pass. The deflection of the residual swirl due to the sudden reduction and expansion of the flow cross-sectional area causes velocity deviation between the left and right side of the boiler. This consequently results in flue gas temperature imbalance which has often caused tube leaks in the superheater/reheater region. Therefore, eliminating the residual swirl or restraining it from being diverted might help to alleviate the problem.
| Original language | English |
|---|---|
| Article number | 012062 |
| Journal | IOP Conference Series: Materials Science and Engineering |
| Volume | 257 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 01 Nov 2017 |
| Event | 4th International Conference on Mechanical Engineering Research, ICMER 2017 - Kuantan, Pahang, Malaysia Duration: 01 Aug 2017 → 02 Aug 2017 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Engineering(all)
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CFD analysis of temperature imbalance in superheater/reheater region of tangentially coal-fired boiler. / Zainudin, A. F.; Hasini, Hasril; Fadhil, Siti Sarah Ain.
In: IOP Conference Series: Materials Science and Engineering, Vol. 257, No. 1, 012062, 01.11.2017.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - CFD analysis of temperature imbalance in superheater/reheater region of tangentially coal-fired boiler
AU - Zainudin, A. F.
AU - Hasini, Hasril
AU - Fadhil, Siti Sarah Ain
PY - 2017/11/1
Y1 - 2017/11/1
N2 - This paper presents a CFD analysis of the flow, velocity and temperature distribution in a 700 MW tangentially coal-fired boiler operating in Malaysia. The main objective of the analysis is to gain insights on the occurrences in the boiler so as to understand the inherent steam temperature imbalance problem. The results show that the root cause of the problem comes from the residual swirl in the horizontal pass. The deflection of the residual swirl due to the sudden reduction and expansion of the flow cross-sectional area causes velocity deviation between the left and right side of the boiler. This consequently results in flue gas temperature imbalance which has often caused tube leaks in the superheater/reheater region. Therefore, eliminating the residual swirl or restraining it from being diverted might help to alleviate the problem.
AB - This paper presents a CFD analysis of the flow, velocity and temperature distribution in a 700 MW tangentially coal-fired boiler operating in Malaysia. The main objective of the analysis is to gain insights on the occurrences in the boiler so as to understand the inherent steam temperature imbalance problem. The results show that the root cause of the problem comes from the residual swirl in the horizontal pass. The deflection of the residual swirl due to the sudden reduction and expansion of the flow cross-sectional area causes velocity deviation between the left and right side of the boiler. This consequently results in flue gas temperature imbalance which has often caused tube leaks in the superheater/reheater region. Therefore, eliminating the residual swirl or restraining it from being diverted might help to alleviate the problem.
UR - http://www.scopus.com/inward/record.url?scp=85034974521&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85034974521&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/257/1/012062
DO - 10.1088/1757-899X/257/1/012062
M3 - Conference article
VL - 257
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012062
ER -