What is liquid air energy storage?

Energy 5 012002 DOI 10.1088/2516-1083/aca26a Article PDF Liquid air energy storage (LAES) uses air as both the storage medium and working fluid, and it falls into the broad category of thermo-mechanical energy storage technologies.

Which thermal energy storage materials are suitable for LAEs?

Thermal energy stores and storage media Numerous studies can be found in the literature on thermal energy storage materials, devices, and system integration, but not all are suitable for LAES. Compression heat store and storage media Water, thermal oil and solid particulate are among the main TES materials for storing compression heat.

What is the RTE of a LAEs-based poly-generation system?

Tafone et al [51, 150] studied a LAES-based poly-generation system, with LAES integrated with an ORC and a waste heat-driven ABC to provide electricity, heat and cold energy for district heating and cooling networks. Their results showed that the overall RTE of the LAES for the tri-generation could reach 45%–56%.

How efficient is a LAEs system?

Nabat et al investigated an integrated LAES system with a thermoelectric generator, a high-temperature thermal energy store, and an ORC. Their techno-economic analyses indicated the system energy and exergy efficiencies at 61.13% and 52.84%, respectively, with a payback period (PBP) of 3.91 years.

Does LAEs integrate with external heat source?

Literature summary of LAES integrated with external heat source. Due to carbon emission of NG and coal combustion, the use of external heat from non-carbon sources to the LAES system has been studied.

How does a LFU charging system work?

LAES charging process The LFU uses off-peak (low-cost) electricity or renewable power to compress purified air to a high pressure (charging pressure) through multistage compression (state 1–2), which is then cooled in HEXs ('cold box', state 2–3) by recirculating air between the cold box and the cold store.