Adiabatic compressed air energy storage system and corresponding method

A compressed air and thermal energy storage technology, applied in the field of energy balance of CAES (ACAES) system, can solve the problems of increasing system complexity, increasing pressure loss, increasing basic costs, etc.

Inactive Publication Date: 2013-03-06
GENERAL ELECTRIC TECH GMBH
View PDF24 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, disadvantages caused by this arrangement are, for example, increased capital costs due to the presence of heat exchangers and additional thermal energy storage units; increased pressure loss due to multi-stage compression and expansion; increased system complexity; and power while l

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adiabatic compressed air energy storage system and corresponding method
  • Adiabatic compressed air energy storage system and corresponding method
  • Adiabatic compressed air energy storage system and corresponding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In an adiabatic compressed air energy storage (ACAES) system, the potential energy of the air stored in the cavity may be insufficient for various reasons, even in combination with the thermal energy stored in the thermal energy storage (TES) to drive turbines to generate electricity with high efficiency. In order to overcome this problem, or at least ameliorate this problem, the present invention proposes an improved ACAES system, which includes the selective operation to balance the thermal energy stored in the TES with heating a given volume of compressed air to the desired and preferably The optimum temperature to drive a turbine and thus, for example, the means of energy required to generate electricity.

[0030] In a preferred embodiment, the ACAES system comprises heating means for increasing the level of thermal energy stored in a thermal energy storage unit (TES) of the ACAES system. A variety of such devices are contemplated and include, among others, burners...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

During operation of an adiabatic compressed air energy storage (ACAES) system (50), energy imbalances may arise between thermal energy storage (TES,60) in the (ACAES) system and the amount of thermal energy required to raise the temperature of a given volume of compressed air to a desired turbine entry temperature T i after the air has been discharged from compressed air storage (62) of the ACAES system (50). To at last partially redress such an energy imbalance it is proposed to selectively supply additional thermal energy to the given volume of compressed air after it has received thermal energy from the TES (60) and before it expands through the turbine (58). The additional thermal energy is supplied from a source external to the ACAES system, such as fuel burnt in a combustor (56). The amount of thermal energy added to the given volume of compressed air after it has received thermal energy from the TES is much smaller than the amount of useful work obtained from the given volume of compressed air by the turbine (58).

Description

technical field [0001] The present invention relates to the field of compressed air energy storage (CAES) systems, more particularly the invention relates to the energy balance of adiabatic CAES (ACAES) systems. Background technique [0002] CAES systems can be used to store large amounts of energy. During the "fill" phase of operation, when electricity demand is low, such as at night, when available online generation capacity exceeds demand, air is compressed to high pressure using an electric pump or compressor and stored into one or more large chambers chamber or cavity. During the "release" phase of the operation of the CAES system, during periods when there is a danger of electricity demand exceeding the grid's supply capacity, the stored compressed air is used to drive a turbine connected to a generator, thereby supplying electrical energy to the utility grid . A very relevant example of this application occurs in the field of electricity generation using renewable ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F02C6/16F01D15/10
CPCF02C7/143Y02E60/15Y02E10/46F02C6/16Y02E60/16
Inventor R·博韦M·科勒
Owner GENERAL ELECTRIC TECH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap