Proceedings of the 3rd International Conference on Mechatronics, Robotics and Automation

Heat Storage Calculation Model for Supercritical Once-through Boilers

Authors
Zhiming Qin, Junjie Gu, Luanying Zhang
Corresponding Author
Zhiming Qin
Available Online April 2015.
DOI
https://doi.org/10.2991/icmra-15.2015.173How to use a DOI?
Keywords
Supercritical once-through boiler Heat-surface Heat energy storage
Abstract
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.
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This is an open access article distributed under the CC BY-NC license.

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Proceedings
3rd International Conference on Mechatronics, Robotics and Automation
Part of series
Advances in Computer Science Research
Publication Date
April 2015
ISBN
978-94-62520-76-9
ISSN
2352-538X
DOI
https://doi.org/10.2991/icmra-15.2015.173How to use a DOI?
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  -