“…2,3 Furthermore, the construction of new Nomenclature: C a , absorption reaction constant, s −1 ; C d , desorption reaction constant, s −1 ; Cp, Specific heat, J/kg K; E a , activation energy for absorption, J/mol H 2 ; h, heat transfer coefficient, W/m 2 K; k, thermal conductivity, W/m 2 K; K, permeability, m 2 ; M, molecular weight, kg/mol; m, kinetic expression; n, number of hydrogen moles; P, pressure, bar; R, gas global constant, J/mol K; t, time (s); T, temperature (K); v, gas velocity, m/s; V, volume, m 3 Subscripts: a, absorption; d, desorption; e, effective; eq, equilibrium; f, external cooler; g, gas; i, initial; s, solid; ss, saturation Greek letters: ε, porosity; μ, dynamic viscosity, kg/ms; ρ, density, kg/m 3 ; ΔH, reaction enthalpy, J/ntol; ΔS, reaction entropy, J/mol K buildings and the renovation of old ones utilises natural resources, from raw materials to nonfriendly environmental processes. 4,5 The development of nonrenewable processes, such as nonefficient heating, ventilation, and air conditioning (HVAC) can equally affect the environment in the long-term 6 in addition to the usage of nonrenewable materials for the buildings. It has also been reported that the energy consumption in the most advanced cities (and countries) around the world has gone beyond the correspondent consumption of the industrial and automotive sector.…”