The CellFlux concept as an alternative solution for sensible heat storage

Kurzfassung

The CellFlux concept is a new sensible storage system where thermal energy from a primary working fluid (HTF) is transferred to an intermediate working fluid (IWF) which flows in direct contact through a cost effective packed bed solid sensible storage material. The IWF is kept in a closed loop, conveyed by a fan. It is possible to combine multiple storage modules to a large system. The paper presents the results of the analysis of a single storage cell. Various options for the combination of storage cells in a storage unit are described; the importance of the concept selected for the integration of the storage unit into the power plant is shown. The combination of CellFlux with molten salt HTFs is introduced and results from cost estimations are given.