This paper clarifies the framework of underground energy storage systems, including underground gas storage (UGS), underground oil storage (UOS), underground thermal storage (UTS) and compressed air energy storage (CAES), and the global development of underground energy storage systems in porous media is …
This paper presents a case study of a geotechnical feasibility analysis of compressed air energy storage (CAES) in bedded salt formations. CAES is a way in which excess electricity is used to ...
by Temperature and Air Pressure in a Lined Rock Cavern for Underground Compressed Air Energy Storage Shu-Wei Zhou • Cai-Chu Xia • Shi-Gui Du • Ping-Yang Zhang • Yu Zhou Received: 10 September 2013/Accepted: 15 March 2014/Published online: 3 April
Recovering compression waste heat using latent thermal energy storage (LTES) is a promising method to enhance the round-trip efficiency of compressed air energy storage (CAES) systems. In this study, a systematic thermodynamic model coupled with a concentric diffusion heat transfer model of the cylindrical packed-bed LTES is established …
DOI: 10.1680/GEOLETT.13.00068 Corpus ID: 109773930 Coupled hydromechanical analysis of an underground compressed air energy storage facility in sandstone @article{Snchez2014CoupledHA, title={Coupled hydromechanical analysis of an underground ...
Both energy and exergy analyses are conducted to scrutinize the performance of the UWCAES system. The analyses reveal that a round-trip efficiency of 58.9% can be achieved. However, these two analyses …
2 Overview of compressed air energy storage. Compressed air energy storage (CAES) is the use of compressed air to store energy for use at a later time when required [41–45]. Excess energy generated from renewable energy sources when demand is low can be stored with the application of this technology.
Types of underground energy storage chambers. 1 - Salt cavern, typically solution mined from a salt deposit, 2 - Aquifer storage, the air is injected into a permeable rock displacing water and capped by a cap rock, 3 - …
One way of enhancing the exergy storage capacity per unit mass of air for adiabatic compressed air energy storage system is by preheating the air prior to compression, as depicted in Fig. 9. The specific volume of the air increases due to an increase in air temperature before the compression stage.
Abstract. The fundamentals of a compressed air energy storage (CAES) system are reviewed as well as the thermodynamics that makes CAES a viable energy storage mechanism. The two currently operating CAES systems are conventional designs coupled to standard gas turbines. Newer concepts for CAES system configurations …
The basic principle of LAES involves liquefying and storing air to be utilized later for electricity generation. Although the liquefaction of air has been studied for many years, the concept of using LAES "cryogenics" as an energy storage method was initially proposed in 1977 and has recently gained renewed attention.
2.1. How it all began The fundamental idea to store electrical energy by means of compressed air dates back to the early 1940s [2] then the patent application "Means for Storing Fluids for Power Generation" was submitted by F.W. Gay to the US Patent Office [3]..
Compressed air energy storage (CAES) systems offer significant potential as large-scale physical energy storage technologies. Given the increasing global emphasis on carbon reduction strategies and the rapid …
The utilization of the potential energy stored in the pressurization of a compressible fluid is at the heart of the compressed-air energy storage (CAES) systems. The mode of operation for installations employing this principle is quite simple. Whenever energy demand is low, a fluid is compressed into a voluminous impermeable cavity, …
Thermodynamic Analysis of Efficiency and Safety of Underground Air Energy Storage System @inproceedings{1999ThermodynamicAO, title={Thermodynamic Analysis of Efficiency and Safety of Underground Air Energy Storage System}, author={中 …
The special thing about compressed air storage is that the air heats up strongly when being compressed from atmospheric pressure to a storage pressure of approx. 1,015 psia (70 bar). Standard multistage air compressors use inter- and after-coolers to reduce discharge temperatures to 300/350°F (149/177°C) and cavern injection air temperature reduced to …
An alternative to those systems is represented by the liquid air energy storage (LAES) system that uses liquid air as the storage medium. LAES is based on the concept that air at ambient pressure can be liquefied at −196 °C, reducing thus its specific volume of around 700 times, and can be stored in unpressurized vessels.