dc.contributor.authorBorri, Emiliano
dc.contributor.authorTafone, Alessio
dc.contributor.authorComodi, Gabriele
dc.contributor.authorRomagnoli, Alessandro
dc.identifier.citationBorri, E., Tafone, A., Comodi, G., & Romagnoli, A. (2017). Improving liquefaction process of microgrid scale Liquid Air Energy Storage (LAES) through waste heat recovery (WHR) and absorption chiller. Energy Procedia, 143, 699-704. doi:10.1016/j.egypro.2017.12.749en_US
dc.description.abstractLiquid air energy storage systems (LAES) store liquid air produced by a liquefaction cycle and convert it into electric/cooling power when needed. A small-scale Liquid air energy storage system represents a sustainable solution in microgrid and distributed generation, where small energy storage capacities are required. The main drawback of these systems though, is the low round trip efficiency due to a high specific consumption of the liquefaction cycle. In this work, a single-effect absorption chiller using a Water-Lithium Bromide solution is integrated with a small air liquefier with a liquid air production capacity of 0.834 t/h. In the proposed solution, the waste heat of the compression phase of the liquefaction cycle is recovered and used to drive the absorption cycle, where the resulting cooling power is used to decrease the specific consumption and improving the exergy efficiency of the system. The operative parameters of the absorption chiller reflect the specifications of the most common commercial models available in the market and the size has been selected to maximize the heat power recovered. The results of simulation of the absorption chiller integration show a reduction of the specific consumption of around 10% (537 kWh/t to 478 kWh/t) and an increase of exergy efficiency of around 11.5%.en_US
dc.format.extent6 p.en_US
dc.relation.ispartofseriesEnergy Procediaen_US
dc.rights© 2017 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).en_US
dc.subjectLiquid air energy storage (LAES)en_US
dc.subjectSmall Scale LAESen_US
dc.subjectDRNTU::Engineering::Mechanical engineeringen_US
dc.titleImproving liquefaction process of microgrid scale Liquid Air Energy Storage (LAES) through waste heat recovery (WHR) and absorption chilleren_US
dc.typeJournal Article
dc.contributor.researchEnergy Research Institute @NTUen_US
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.description.versionPublished versionen_US

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