Energy storage device can adjust the pressure

How does a compressed air energy storage system work?

Saving the power consumption of compressor and increasing the output power of turbines. Contributing to increase the charging and discharging efficiency of CAES system. The compressed air energy storage (CAES) system generally adopts compressors and turbines to operate under a constant pressure ratio.

What happens if air pressure increases in the air storage device?

If the air pressure in the air storage device increases to the outlet pressure of the first compression, the compression process changes to Step 2 and the mass flow rate entering the air storage device is 0.96 kg/s, which is twice that of the single stage.

How does air storage pressure change over time?

The pressure in the air storage device increases gradually over time during the process of air storage for an air storage device with a constant volume.

Why do air storage devices waste a lot of energy?

Since the pressure in the air storage device is low in the initial energy storage, the high-pressure air discharged from the compressor enters the air storage device and diffuses rapidly, which wastes a certain amount of pressure energy.

Why does air temperature change in air storage devices of two systems?

The air temperature change in the air storage devices of two systems is shown in Fig. 11. The air releases heat after entering the air storage device and the air temperature in the air storage device increases obviously due to the air storage model is constant volume and adiabatic.

How to improve energy storage energy density?

To improve energy storage energy density, hybrid systems using flywheels and batteries can also be attractive options in which flywheels, with their high power densities, can cope well with the fluctuating power consumption and the batteries, with their high energy densities, serve as the main source of energy for propulsion .