Thermal storage of regenerative Clarinsman heat exchanger member and Regenerative Restorative heat exchanger using the same

摘要

PROBLEM TO BE SOLVED: To provide a heat storage member and a heat exchanger capable of reducing the size and the number of burners and executing short time heat exchanging, which is hardly damaged by thermal expansion, oxidation, corrosion or others.SOLUTION: The heat storage member comprises dense ceramics more than 95% or more by a theoretical density ratio, the dense ceramics includes alumina based ceramics in which an average crystalline particle size is 2 to 50 μm, an average aspect ratio is 4 or more and less than 10, and a purity is 85 mass% or more, and the alumina base ceramics contains 0.1 to 6 mass% of magnesia (MgO), silica (SiO), rare earth oxides (REOand/or REO, RE: rare earth elements), iron oxides (FeOand/or FeO), calcia (CaO), chromia (CrO), transition metal oxides other than the, or at least one composite oxide of the same as a component system other than the alumina.