Later applications included the blast furnace process known as hot blast and the open hearth furnace also called Siemens regenerative furnace (which was used for making glass), where the hot exhaust gases from combustion are passed through firebrick regenerative chambers, which are thus heated.
Subsequent uses of this technology included the blast furnace process referred to as hot blast and the open hearth furnace also known as the Siemens regenerative furnace, utilized for producing glass, wherein hot combustion byproducts are channeled through firebrick-lined heating compartments, thereby warming them.