Thermalhydraulics of once-through steam boiler tubes revisited
Само за регистроване кориснике
2020
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The analysis of pressure changes in water and steam flow along the entire once-through steam boiler
tube system was carried out. An efficient advanced method is developed and presented for the
prediction of once-through boiler thermalhydraulics, which is based on the steam-water two-fluid
model with mass, momentum and energy balance equations and mechanistic correlations for the
steam-water interface transfer processes. The model is suitable for the fluid flow parameters prediction
in the span from single and two-phase flow conditions under subcritical operating conditions to
supercritical and near critical flow conditions. Conducted calculations provide detailed insight in the
fluid pressure, velocity and temperature change in the boiler tube system. The numerical results are
validated by comparison with data measured at the boiler tube system. The thermalhydraulic analysis
shows that a significant increase in hydraulic resistance occurs in boiler evaporator tubes, w...hile this
increase in the steam superheater tubes is lower. The increase of hydraulic resistance in the evaporator
tubes, both in the water heating zone and in the evaporation zone with the two phase mixture flow is
due to the fouling deposited on the inner wall of tubes. The pressure drop in evaporating tubes almost
doubles in comparison to the design values after the long operational period. The presented results are
a support to boiler’s design, operational procedures and maintenance.
Кључне речи:
Numerical simulation / Two-fluid model / Thermalhydraulics / Tube system / Steam boilerИзвор:
Proceedings of the 6th International Conference on Contemporary Problems of Thermal Engineering - CPOTE 2020, online, Poland, September 21-24, 2020, 2020, 317-328Издавач:
- Department of Thermal Technology, Gliwice, Poland, Silesian University of Technology 2020
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200105 (Универзитет у Београду, Машински факултет) (RS-MESTD-inst-2020-200105)
Институција/група
Mašinski fakultetTY - CONF AU - Stevanović, Vladimir AU - Milivojević, Sanja AU - Petrović, Milan M. AU - Ilić, Milica PY - 2020 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4493 AB - The analysis of pressure changes in water and steam flow along the entire once-through steam boiler tube system was carried out. An efficient advanced method is developed and presented for the prediction of once-through boiler thermalhydraulics, which is based on the steam-water two-fluid model with mass, momentum and energy balance equations and mechanistic correlations for the steam-water interface transfer processes. The model is suitable for the fluid flow parameters prediction in the span from single and two-phase flow conditions under subcritical operating conditions to supercritical and near critical flow conditions. Conducted calculations provide detailed insight in the fluid pressure, velocity and temperature change in the boiler tube system. The numerical results are validated by comparison with data measured at the boiler tube system. The thermalhydraulic analysis shows that a significant increase in hydraulic resistance occurs in boiler evaporator tubes, while this increase in the steam superheater tubes is lower. The increase of hydraulic resistance in the evaporator tubes, both in the water heating zone and in the evaporation zone with the two phase mixture flow is due to the fouling deposited on the inner wall of tubes. The pressure drop in evaporating tubes almost doubles in comparison to the design values after the long operational period. The presented results are a support to boiler’s design, operational procedures and maintenance. PB - Department of Thermal Technology, Gliwice, Poland, Silesian University of Technology 2020 C3 - Proceedings of the 6th International Conference on Contemporary Problems of Thermal Engineering - CPOTE 2020, online, Poland, September 21-24, 2020 T1 - Thermalhydraulics of once-through steam boiler tubes revisited EP - 328 SP - 317 UR - https://hdl.handle.net/21.15107/rcub_machinery_4493 ER -
@conference{ author = "Stevanović, Vladimir and Milivojević, Sanja and Petrović, Milan M. and Ilić, Milica", year = "2020", abstract = "The analysis of pressure changes in water and steam flow along the entire once-through steam boiler tube system was carried out. An efficient advanced method is developed and presented for the prediction of once-through boiler thermalhydraulics, which is based on the steam-water two-fluid model with mass, momentum and energy balance equations and mechanistic correlations for the steam-water interface transfer processes. The model is suitable for the fluid flow parameters prediction in the span from single and two-phase flow conditions under subcritical operating conditions to supercritical and near critical flow conditions. Conducted calculations provide detailed insight in the fluid pressure, velocity and temperature change in the boiler tube system. The numerical results are validated by comparison with data measured at the boiler tube system. The thermalhydraulic analysis shows that a significant increase in hydraulic resistance occurs in boiler evaporator tubes, while this increase in the steam superheater tubes is lower. The increase of hydraulic resistance in the evaporator tubes, both in the water heating zone and in the evaporation zone with the two phase mixture flow is due to the fouling deposited on the inner wall of tubes. The pressure drop in evaporating tubes almost doubles in comparison to the design values after the long operational period. The presented results are a support to boiler’s design, operational procedures and maintenance.", publisher = "Department of Thermal Technology, Gliwice, Poland, Silesian University of Technology 2020", journal = "Proceedings of the 6th International Conference on Contemporary Problems of Thermal Engineering - CPOTE 2020, online, Poland, September 21-24, 2020", title = "Thermalhydraulics of once-through steam boiler tubes revisited", pages = "328-317", url = "https://hdl.handle.net/21.15107/rcub_machinery_4493" }
Stevanović, V., Milivojević, S., Petrović, M. M.,& Ilić, M.. (2020). Thermalhydraulics of once-through steam boiler tubes revisited. in Proceedings of the 6th International Conference on Contemporary Problems of Thermal Engineering - CPOTE 2020, online, Poland, September 21-24, 2020 Department of Thermal Technology, Gliwice, Poland, Silesian University of Technology 2020., 317-328. https://hdl.handle.net/21.15107/rcub_machinery_4493
Stevanović V, Milivojević S, Petrović MM, Ilić M. Thermalhydraulics of once-through steam boiler tubes revisited. in Proceedings of the 6th International Conference on Contemporary Problems of Thermal Engineering - CPOTE 2020, online, Poland, September 21-24, 2020. 2020;:317-328. https://hdl.handle.net/21.15107/rcub_machinery_4493 .
Stevanović, Vladimir, Milivojević, Sanja, Petrović, Milan M., Ilić, Milica, "Thermalhydraulics of once-through steam boiler tubes revisited" in Proceedings of the 6th International Conference on Contemporary Problems of Thermal Engineering - CPOTE 2020, online, Poland, September 21-24, 2020 (2020):317-328, https://hdl.handle.net/21.15107/rcub_machinery_4493 .