Abstract
An approach for integrated transient simulation of a BFB boiler furnace and the coupled steam cycle is presented. The BFB furnace is simulated with in-house CFD models implemented in the ANSYS Fluent® software. The boiler steam cycle with control loops is simulated with the dynamic process simulation software Apros®. The paper describes the steps taken to couple the modeling tools and discusses the way the numerical solutions can proceed in unison. The approach is demonstrated for a commercial BFB boiler. A fast load change situation was selected as the test case. A coupled transient simulation was carried out and the process behavior during the transient was analyzed. Critical properties affecting the feasibility of a given ramp rate are the emission release rates and temperature transients in the boiler. These properties are monitored during the transient simulation. The paper presents these results along with instantaneous data that show the spatial distribution of temperature and gas composition in the furnace. The paper shows that the modeling approach is feasible. Applicability of the approach and possible future improvements are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 508-515 |
| Number of pages | 8 |
| Journal | Energy Procedia |
| Volume | 120 |
| Issue number | August |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
| MoE publication type | A1 Journal article-refereed |
Fingerprint
Keywords
- system modeling
- steam cycle
- CFD modeling
- coupled modeling
- BFB combustion
- dynamics
Cite this
}
Integrated transient simulation of a BFB boiler with CFD models for the BFB furnace and dynamic system models for the steam cycle and boiler operation. / Hovi, Ville; Huttunen, Marko; Karppinen, Ismo; Pättikangas, Timo; Niemistö, Hannu; Karvonen, Lassi; Kallio, Sirpa; Tuuri, Sami; Ylä-Outinen, Ville.
In: Energy Procedia, Vol. 120, No. August, 01.01.2017, p. 508-515.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Integrated transient simulation of a BFB boiler with CFD models for the BFB furnace and dynamic system models for the steam cycle and boiler operation
AU - Hovi, Ville
AU - Huttunen, Marko
AU - Karppinen, Ismo
AU - Pättikangas, Timo
AU - Niemistö, Hannu
AU - Karvonen, Lassi
AU - Kallio, Sirpa
AU - Tuuri, Sami
AU - Ylä-Outinen, Ville
PY - 2017/1/1
Y1 - 2017/1/1
N2 - An approach for integrated transient simulation of a BFB boiler furnace and the coupled steam cycle is presented. The BFB furnace is simulated with in-house CFD models implemented in the ANSYS Fluent® software. The boiler steam cycle with control loops is simulated with the dynamic process simulation software Apros®. The paper describes the steps taken to couple the modeling tools and discusses the way the numerical solutions can proceed in unison. The approach is demonstrated for a commercial BFB boiler. A fast load change situation was selected as the test case. A coupled transient simulation was carried out and the process behavior during the transient was analyzed. Critical properties affecting the feasibility of a given ramp rate are the emission release rates and temperature transients in the boiler. These properties are monitored during the transient simulation. The paper presents these results along with instantaneous data that show the spatial distribution of temperature and gas composition in the furnace. The paper shows that the modeling approach is feasible. Applicability of the approach and possible future improvements are discussed.
AB - An approach for integrated transient simulation of a BFB boiler furnace and the coupled steam cycle is presented. The BFB furnace is simulated with in-house CFD models implemented in the ANSYS Fluent® software. The boiler steam cycle with control loops is simulated with the dynamic process simulation software Apros®. The paper describes the steps taken to couple the modeling tools and discusses the way the numerical solutions can proceed in unison. The approach is demonstrated for a commercial BFB boiler. A fast load change situation was selected as the test case. A coupled transient simulation was carried out and the process behavior during the transient was analyzed. Critical properties affecting the feasibility of a given ramp rate are the emission release rates and temperature transients in the boiler. These properties are monitored during the transient simulation. The paper presents these results along with instantaneous data that show the spatial distribution of temperature and gas composition in the furnace. The paper shows that the modeling approach is feasible. Applicability of the approach and possible future improvements are discussed.
KW - system modeling
KW - steam cycle
KW - CFD modeling
KW - coupled modeling
KW - BFB combustion
KW - dynamics
UR - http://www.scopus.com/inward/record.url?scp=85029741293&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2017.07.186
DO - 10.1016/j.egypro.2017.07.186
M3 - Article
VL - 120
SP - 508
EP - 515
JO - Energy Procedia
JF - Energy Procedia
SN - 1876-6102
IS - August
ER -