... as heat exchange media,ceramic honeycombs ,materials are mainly utilized in heat recovery unit of RTO 40X40 ChannelsChemical composition (WT%)chemical ... ,2210,2430,203Heat conductivityW/mK2,502,421,891,631,5BTU in/ft² hr°F17,316,813,111,310.4Temperature changeResistancemax K500550500600500max ...