Theoretical Investigation of a Long-Term Solar Energy Storage Based on LiBr/H2O Absorption Cycle
Abstract
Sorption thermal energy storage appears to be relevant for long-term solar energy storage because of its low heat loss and high energy density. A long-term solar heat storage based on the absorption of water by lithium bromide is presented. The modelling of the system is detailed and the results of three parametric simulations are discussed. It appears that crystallisation in the solution store could double the storage density and therefore the system competitiveness. Keywords: thermal energy storage, long term energy storage, solar heat storage, absorption cycles, lithium bromide, dynamic simulation.