Can a liquid air energy storage system replenish liquefaction capacity?

In this paper, a novel liquid air energy storage system with a subcooling subsystem that can replenish liquefaction capacity and ensure complete liquefaction of air inflow is proposed because of the inevitable decrease in the circulating cooling capacity during system operation.

How efficient is a liquid air energy storage system?

The round-trip efficiency η RTE of the proposed liquid air energy storage system is 0.592, which is relatively high compared with those of the standalone liquid–air energy storage systems in previous studies. The total input power ∑ W in and total output power ∑ W out are 1654.64 kW and 979.76 kW, respectively.

What is liquid air energy storage?

Among the existing solutions, liquid air energy storage (LAES), an emerging concept in thermomechanical energy storage, has become a particularly attractive option for addressing such energy storage needs and for storing electrical energy in the form of liquid air in the cryostate.

Where does the cold energy used to liquefy compressed air come from?

The cold energy used to cool and liquefy the compressed air originates from that released when the liquid air in the previous cycle is vaporized and stored in the cold storage equipment during the liquefaction process of a standalone LAES system.

What is energy storage technology?

Energy storage technology, one of the key supporting technologies for building a modern energy system, is the most promising forward-looking technology in the energy industry and is recognized as one of the best solutions for achieving large-scale renewable energy consumption .

What is the temperature and pressure of liquefaction system?

The temperature and pressure of the air entering the system for liquefaction are 25 °C and 100 kPa, respectively. The proposed LAES system is expected to produce 10,000 kg of liquid air per hour for on-peak power generation. Table 1. Basic parameters of the proposed LAES system.