Is liquid air energy storage a promising thermo-mechanical storage solution?

6. Conclusions and outlook Given the high energy density, layout flexibility and absence of geographical constraints, liquid air energy storage (LAES) is a very promising thermo-mechanical storage solution, currently on the verge of industrial deployment.

What is a liquid air energy storage system?

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.

What is the storage section of a liquefaction evaporator (LAEs)?

The storage section of the LAES stores the liquid air produced by the liquefaction cycle in unpressurized or low pressurized insulated vessels. The energy losses for a LAES storage tank can be estimated to be around 0.1–0.2% of the tank energy capacity per day, which makes the LAES suitable as a long-term energy storage system.

What is the exergy efficiency of liquid air storage?

The liquid air storage section and the liquid air release section showed an exergy efficiency of 94.2% and 61.1%, respectively. In the system proposed, part of the cold energy released from the LNG was still wasted to the environment.

Can a standalone LAEs recover cold energy from liquid air evaporation?

Their study examined a novel standalone LAES (using a packed-bed TES) that recovers cold energy from liquid air evaporation and stored compression energy in a diathermic hot thermal storage. The study found that RTE between 50–60% was achievable. 4.3. Integration of LAES

Is liquid air energy storage a viable solution?

In this context, liquid air energy storage (LAES) has recently emerged as feasible solution to provide 10-100s MW power output and a storage capacity of GWhs.