Analysis report on compressed air energy storage phenomenon

What is compressed air energy storage (CAES)?

Compressed air energy storage (CAES) technology has received widespread attention due to its advantages of large scale, low cost and less pollution. However, only mechanical and thermal dynamics are considered in the current dynamic models of the CAES system. The modeling approaches are relatively homogeneous.

What is the performance characteristic of compressed air storage?

The performance characteristic of the compressed air storage is a crucial factor that determines the roundtrip efficiency and energy density of the system. Many researchers have focused on the improvement and extension of A-CAES system, such as tri-generation systems , , hybrid systems with wind , or solar energy.

How efficient is compressed air energy storage?

In the energy analysis, the results indicate that with the system integration, the compressed air energy storage subsystem achieves a round-trip efficiency of 84.90 %, while an energy storage density of 15.91 MJ/m 3. Furthermore, the proposed system demonstrates an overall efficiency of 39.98 %.

How does compressed air storage affect a-CAES performance?

Besides, the charging and discharging of A-CAES which are connected by a compressed air storage are both dynamic processes. The performance characteristic of the compressed air storage is a crucial factor that determines the roundtrip efficiency and energy density of the system.

How dynamic performance characteristic of compressed air storage affect design capacity?

The dynamic performance characteristic of compressed air storage can affect design capacity of first heat exchanger of expansion train and moreover, reduce roundtrip efficiency and energy density of A-CAES system. 1. Introduction

How much CO2 does a compressed air energy storage system emit?

Besides, the proposed system’s CO 2 emission is 258 kg/GWh. This study provides a new option for enhancing the performance of compressed air energy storage through the system integration.