Abstract
Article describes a meshing strategy for efficient computation of generic layered heat storage device for pumped heat energy storage (PHES). Mesh for structural solid body and fluid boundary layer is with unstructured flow field is presented. A rationale for geometry choice, mesh topology and different types of mesh topologies considered in this study. The effect of coarse and fine mesh on computational time and accuracy of results for transient analysis of coupled fluid and heat flow is described.
Highlights
Rapid growth of global electrical power demand next to the climate change issue [1] is influenced by introduction of new environmental regulations concerning emission reductions of carbon dioxide [2]
This goal is realized by fast increase of renewable energy (RE) technologies share to energy mix of many countries, mostly solar and wind power
The CAD geometry is composed of two solid body regions representing layers of storage and fluid region respectively
Summary
TES – Thermal Energy Storage ES – Energy Storage FES – Flywheel energy storage CAES – Compressed air energy storage PS – Power Storage PSH – Pumped Storage Hydroelectricity PHES – Pumped Heat Energy Storage RE – Renewable Energy the potential to meet this demand [3]. PHES concept is based on heat pump principle of operation during loading and turbomachinery devices during discharging of hot side storage tank. Small number of papers describe existing prototypes of PHES in the context of heat transfer and storage components of the system [4]. This paper concerns the mesh preparation for conjugate heat transfer CFD calculations of fluid and heat flow in fixed bed heat storage reservoir
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