Invention Application
- Patent Title: HYBRID COMPRESSED AIR ENERGY STORAGE SYSTEM
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Application No.: US16792684Application Date: 2020-02-17
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Publication No.: US20200182148A1Publication Date: 2020-06-11
- Inventor: Joseph Williams , Jason M. Kerth
- Applicant: Dresser-Rand Company
- Main IPC: F02C6/16
- IPC: F02C6/16 ; F02C7/14

Abstract:
A hybrid compressed air energy storage system is provided. A heat exchanger 114 extracts thermal energy from a compressed air to generate a cooled compressed air stored in an air storage reservoir 120, e.g., a cavern. A heat exchanger 124 transfers thermal energy stored in a thermal storage device 130 to compressed air conveyed from reservoir 120 to generate a heated compressed air. An expander 140 is solely responsive (no heat is introduced by way of a combustor) to the heated compressed air to produce power and generate an expanded air. Expander 140 being solely responsive to heated compressed air by heat exchanger 124 is effective to reduce a temperature of the expanded air by expander 140, and thus a transfer of thermal energy from an expanded exhaust gas received by a recuperator 146 (used to heat the expanded air by the first expander) is effective for reducing waste of thermal energy in exhaust gas cooled by recuperator 146.
Information query
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