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AssigneeNippon Oil Co., Ltd.
InventorsNaohide Saito, Junichi Tamura, Shigeo Take, Masaji Kurosawa, Isao Terada
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Disclosed are a heat exchange element obtained by forming a sheet material or honeycomb structure having a shape required for a heat exchange element from an organic filler-filled sheet made from an acid-resistant glass fiber, dipping the formed sheet material or honeycomb structure in a suspension of an inorganic filler, at least a part of which is composed of scaly particles, and fixing the inorganic filler applied by the dipping treatment to the sheet material or honeycomb structure by a binder, and a process for the preparation of this heat exchange element and a heat exchange apparatus comprising this heat exchange element. A high acid resistance and a high gas-intercepting property can be maintained even by using a thin and light sheet material.
A heat exchange element arranged in a plurality of gases to effect heat exchange in said gases, which is composed of a sheet material comprising an acid-resistant glass fiber, an inorganic filler and a binder as main constituents, wherein at least 85% by weight of the entire sheet material is occupied by SiO.sub.2 or SiO.sub.2 and ZrO.sub.2, the inorganic filler comprises at least scaly particles which is predominantly located in the vicinity of the surface of the sheet material and the majority of which is arranged in parallel to the surface of the sheet material to form a highly gas-intercepting region in the sheet material.
A heat exchange element for effecting heat exchange in a plurality of gases, which has a honeycomb structure composed of a sheet material comprising an acid-resistant glass fiber, an inorganic filler and a binder as main constituents, wherein at least 85% by weight of the entire sheet material is occupied by SiO.sub.2 or SiO.sub.2 and ZrO.sub.2, the inorganic filler comprises at least scaly particles which is predominantly located in the vicinity of the surface of the sheet material and the majority of which is arranged in parallel to the surface of the sheet material to form a highly gas-intercepting region in the honeycomb structure.
A heat exchange apparatus comprising a honeycomb structure housed in a casing through which two gas streams flow, said honeycomb structure being composed of a sheet material comprising an acid-resistant glass fiber, an inorganic filler and a binder as main constituents, wherein at least 85% by weight of the entire sheet material is occupied by SiO.sub.2 or SiO.sub.2 and ZrO.sub.2, the inorganic filler comprises at least scaly particles which is predominantly located in the vicinity of the surface of the sheet material and the majority of which is arranged in parallel to the surface of the sheet material to form a highly gas-intercepting region in the honeycomb structure.
Dependencies are inferred from the claim text.