Solar-thermal energy conversion prediction of building envelope using thermochemical sorbent based on established reaction kinetics

In this paper, the dehydration (heat charge) and hydration (discharge) reaction kinetics of thermochemical sorbents synthesised in previous work by author is established using isothermal method, with aim understanding their conversion behaviour developing models for numerical simulations. The effects temperature, advancement, vapour pressure are fully considered employed a energy storage model. derived activation energies LiOH/[email protected] expanded graphite ([email [email protected]) 54.7 52.2 kJ/mol, respectively, which lower than that pure LiOH·H2O. To achieve dual-function space heating air purification an efficient manner, novel solar building envelope combining photocatalysis proposed studied numerically based on kinetics. Fresh can be produced during harvesting. porous wall, made composite sorbent, absorbs thermal to heat near wall thus creates chimney effect channel continuous heating. During discharge, desorbed adsorbs moist enthalpy used again total efficiency including equivalent formaldehyde degradation around 81% when radiation 600 W/m2. Results indicate passive higher harvesting utilisation more compact compared studies. Moreover, influence intensity performance investigated. present provides new insights promotes integration envelopes storage.