Steam heat storage system
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorMarco Olcese
Life of this patent
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Abstract
A solar plant including a solar field for production of steam, a turbine using steam, and an excess steam storage and draw off system. The system includes a latent heat thermal storage module and a liquid displacement thermal storage module including a liquid volume and a steam blanket. The modules are connected together so that the steam produced passes through the steam blanket before passing through the latent heat module, condensing, to be injected in the liquid volume, the lower part of the liquid volume being connected to the solar field and to an outlet of the turbine to let in or return cold liquid. The liquid volume acts as a liquid displacement reservoir.
Claims18
A steam thermal storage system comprising:
- a latent heat thermal storage module and a liquid displacement thermal storage module, the latent heat thermal storage module comprising a reservoir, the liquid displacement thermal storage module comprising a reservoir different from the reservoir in the latent heat thermal storage module, the reservoir of the liquid displacement thermal storage module containing a volume of liquid in a lower part and steam in an upper part, the liquid volume including an upper zone and a lower zone placed below the upper zone;
- a first connector for transferring liquid between the upper zone in the liquid volume and the latent heat thermal storage module;
- a second connector for transferring liquid between the lower zone in the liquid volume and an external circuit;
- a third connector for transferring steam or a liquid-steam mix between the upper part of the reservoir in the liquid displacement thermal storage module and the latent heat thermal storage module;
- and
- a fourth connector for transferring steam between the system and the external circuit, wherein the fourth connector comprises a connection opening up in the upper part of the liquid displacement thermal storage module configured to transfer the steam between the system and the external circuit.
Dependencies are inferred from the claim text.