Heat Storage Calculation Model for Supercritical Once-through Boilers
Zhiming Qin, Junjie Gu, Luanying Zhang
Available Online April 2015.
- https://doi.org/10.2991/icmra-15.2015.173How to use a DOI?
- Supercritical once-through boiler Heat-surface Heat energy storage
- According to the properties of water and steam, The evaporating surface of supercritical once-through boiler is divided into a cold-water section, a density-change section and a overheat- steam section for both supercritical and subcritical pressures. A lumped-parameter mathematical model was build up for the steam generator,separator, over-heater through mechanism analysis and model simplification, the heat energy storage under different loads is calculated based on the design data of boiler structure. Application results on a 1000 MW unit show that the variation of heat energy storage of the water/steam in risers under subcritical pressures is more than supercritical pressures, the metal's heat storage is much larger than the water/steam's, the over-heater's heat storage accounted for about 70% of the entire boiler's,The heat storage of boiler decreases with the pressure increasing.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Zhiming Qin AU - Junjie Gu AU - Luanying Zhang PY - 2015/04 DA - 2015/04 TI - Heat Storage Calculation Model for Supercritical Once-through Boilers BT - 3rd International Conference on Mechatronics, Robotics and Automation PB - Atlantis Press SN - 2352-538X UR - https://doi.org/10.2991/icmra-15.2015.173 DO - https://doi.org/10.2991/icmra-15.2015.173 ID - Qin2015/04 ER -