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.

Is a new energy storage system integrating LAEs and thermochemical energy storage?

A novel energy storage system integrating LAES and thermochemical energy storage (TCES) systems, was proposed by Wu et al. .

What is a large-scale energy storage system (LAEs)?

Indeed, characterized by one of the highest volumetric energy density (≈200 kWh/m 3), LAES can overcome the geographical constraints from which the actual mature large-scale electrical energy storage technologies suffer from. LAES is based on the concept that air can be liquefied, stored, and used at a later time to produce electricity.

How does a liquid air system work?

The system is made up of three main parts: electricity sources (that includes renewable sources) a LAES and an LNG combustion unit. In this concept, the liquid air is produced by means of a Linde-Hampson cycle during the off-peak time or with a surplus of electric power from renewable sources.