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/ A CFD-process model of steam generation in a power plant by a thermosyphon system

A CFD-process model of steam generation in a power plant by a thermosyphon system

/ A CFD-process model of steam generation in a power plant by a thermosyphon system

A novel combined CFD-process model of steam generation in a coal-fired natural circulation boiler is driven by heat flux data from a detailed CFD simulation of the furnace. The circulation mass flow at steady-state is calculated and the fluid-side heat transfer coefficient as a function of height is post-processed and can be linked back to the flux boundary condition in the CFD model. It is demonstrated that the circulation rate is approximately 8 times the feed flow, which is significantly higher than the “rule of thumb” values of 3-5 times the feed flow. The resulting model can provide vital information on the operation of steam generation systems in coal-fired power plants and lead to the development of improved control strategies with increased opportunity for flexibility of operation and reduction of thermal stresses in the tube walls.

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The UK Carbon Capture and Storage Research Community (UKCCSRC) is supported by the Engineering and Physical Sciences Research Council (EPSRC) as part of the UK Research and Innovation (UKRI) Energy Programme.

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