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US 2020/0347783 A1Published application
Improved method for storing and producing energy with optimised water management
AssigneeIfp Energies Nouvelles
InventorsPatrick BRIOT, David TEIXEIRA
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Abstract
The invention relates to a system and to a method for compressed-gas energy storage and recovery comprising at least a first and at least a second heat exchanger, a cold liquid storage means and a hot liquid storage means, as well as a separation means. The separation means is positioned after at least a first heat exchanger. The system comprises at least one means for feeding the liquid leaving the separation means to the cold liquid storage means.
Claims17
A compressed-gas energy storage and recovery system comprising:
- at least one gas compression means (K-101, K-102, K-103, K-104),
- at least one means of storing the compressed gas (T-201),
- at least one means of expanding the compressed gas (EX-201, EX-202, EX-203, EX-204),
- at least a first heat exchanger (E-101, E-102, E-103, E-104), the first heat exchanger being arranged downstream from the means of compressing the compressed gas (K-101, K-102, K-103, K-104),
- at least a second heat exchanger (E-106, E-107, E-201, C-105, C-106, C-107, C-108, C-208), the second heat exchanger being arranged upstream from the means of expanding the compressed gas (EX-201, EX-202, EX-203, EX-204),
- at least one cold liquid storage means (T-406) and at least one hot liquid storage means (T-402, T-403, T-404, T-405),
- at least one means (V-101, V-102, V-103, V-104) of separating the gas and the liquid,
- the first (E-101, E-102, E-103, E-104) and second (E-106, E-107, E-201, C-105, C-106, C-107, C-108, C-208) heat exchangers transferring heat between the gas and the liquid, the first (E-101, E-102, E-103, E-104) and second (E-106, E-107, E-201, C-105, C-106, C-107, C-108, C-208) heat exchangers being positioned between the cold liquid storage means (T-406) and the hot liquid storage means (T-402, T-403, T-404, T-405), the separation means (V-101, V-102, V-103, V-104) being positioned after at least a first heat exchanger (E-101, E-102, E-103, E-104), characterized in that the system comprises at least one means of feeding the liquid leaving separation means (V-101, V-102, V-103, V-104) into at least one cold liquid storage means (T-406).
5 more elements
An energy storage and recovery method wherein the following steps are carried out:
- a) compressing a gas,
- b) cooling a compressed gas by heat exchange with a cold liquid and storing the hot liquid at the outlet of heat exchanger (E-101, E-102, E-103, E-104),
- c) separating the cooled compressed gas and the condensed liquid, and storing the condensed liquid,
- d) storing the cooled compressed gas,
- e) heating the cooled compressed gas by means of a heat exchanger using the hot liquid stored in step c) and storing the cold liquid,
- f) expanding the compressed gas,
- g) injecting the condensed liquid stored in step c) into the stored cold liquid.
4 more elements
Dependencies are inferred from the claim text.