Honeycomb filters made from mesoporous composite material for an open sorption thermal energy storage system to store low-temperature industrial waste heat

An open sorption thermal energy storage system was proposed, and the experimental setup was constructed. A low regeneration temperature (80-100 °C) of the storage medium was achieved with this open system. In the case of the 22.4 wt% CaCl2 supported with the honeycomb filter (926.2 g; 2 L), air was heated to a temperature greater than 40 °C for a duration of 432 min by supplying air at 25 °C at a flow rate of 3.0 m3/h when the regeneration temperature was 80 °C. The volumetric heat storage density obtained was 272 MJ/m3, and the coefficient of the heat extraction performance during the heat release process was 65%.