Thermal compressed air energy storage and advanced insulation

How efficient is a adiabatic compressed air energy storage (AA-CAES) system?

A roundtrip efficiency of 65.7 % and an exergy efficiency of 78 % can be gotten. Parameter sensitivity analysis is conducted to optimize system performance. Advanced adiabatic compressed air energy storage (AA-CAES) system has drawn great attention owing to its large-scale energy storage capacity, long lifespan, and environmental friendliness.

What is compressed air energy storage (CAES)?

1. Introduction Compressed Air Energy Storage (CAES) has emerged as one of the most promising large-scale energy storage technologies for balancing electricity supply and demand in modern power grids. Renewable energy sources such as wind and solar power, despite their many benefits, are inherently intermittent.

How AA-CAES system is integrated with a high-temperature thermal energy storage system?

The schematic diagram of the proposed AA-CAES system integrated with a high-temperature thermal energy storage system and an ORC: (a) charging and (b) discharging. As illustrated in Fig. 1 a, during the energy storage process, air enters CP1-CP4 and IC1-IC4. Then, the generated high-pressure air is stored in the ASC.

What are the future research directions of thermal energy storage in caes?

The future research directions of thermal energy storage in CAES are discussed. Compressed air energy storage (CAES) is a large-scale physical energy storage method, which can solve the difficulties of grid connection of unstable renewable energy power, such as wind and photovoltaic power, and improve its utilization rate.

What is an integrated generation system with wind-solar complementary energy storage?

An integrated generation system with wind-solar complementary energy storage shown in Fig. 13 consists of wind turbines, solar collectors/heat accumulator, air compressors and compressed air storage, compressor stage heat exchange/accumulation device, and the exhaust heat recovery device and the expander .

How effective is thermal energy storage in adiabatic CAES?

Thermal energy storage (TES) is an effective method to solve this issue. Firstly, this paper briefly introduces the development history of CAES. Taking advanced adiabatic CAES (AA-CAES) as an example, the basic principle, model and key parameters of TES in CAES are summarized.