Heat exchange element and heat exchanger

Abstract

A heat exchange element has a liner sheet high in water vapor transmission properties and gas shielding properties, specifically, and is prepared by combining a piece of single-faced corrugated cardboard 1 constituted of a liner sheet 1 with a carbon dioxide shielding rate of greater than or equal to 95% and a corrugated sheet 1 and a piece of single-faced corrugated cardboard 2 constituted of a liner sheet 2 with a water vapor permeability of greater than or equal to 80 g/m 2 ·hr and a corrugated sheet 2, and a heat exchanger.

1 .- 9 . (canceled) 
     
     
         10 . A heat exchange element comprising a stack of a piece of single-faced corrugated cardboard 1 constituted of a liner sheet 1 with a carbon dioxide shielding rate of greater than or equal to 95%, a corrugated sheet 1, a piece of single-faced corrugated cardboard 2 constituted of a liner sheet 2 with a water vapor permeability of greater than or equal to 80 g/m 2 ·hr and a corrugated sheet 2. 
     
     
         11 . The heat exchange element according to  claim 10 , wherein a ratio of an area of the liner sheet 2 to a sum of areas of the liner sheet 1 and the liner sheet 2 in the heat exchange element is 20 to 50%. 
     
     
         12 . The heat exchange element according to  claim 10 , wherein the area ratio of the liner sheet 2 to the sum of areas of the liner sheet 1 and the liner sheet 2 in a portion from at least one face among two bottom faces which the heat exchange element has to a height position of 50% of a distance between the two bottom faces is greater than or equal to 40%. 
     
     
         13 . The heat exchange element according to  claim 11 , wherein the area ratio of the liner sheet 2 to the sum of areas of the liner sheet 1 and the liner sheet 2 in a portion from at least one face among two bottom faces which the heat exchange element has to a height position of 50% of a distance between the two bottom faces is greater than or equal to 40%. 
     
     
         14 . The heat exchange element according to  claim 10 , wherein the liner sheet 1 includes pulp with a Canadian standard freeness of less than or equal to 150 ml. 
     
     
         15 . The heat exchange element according to  claim 10 , wherein the liner sheet 1 includes pulp with a fiber diameter of greater than or equal to 20 μm. 
     
     
         16 . The heat exchange element according to  claim 10 , wherein the liner sheet 2 includes at least one layer of a gas shielding layer and at least one layer of a porous layer, and has a stacked structure thereof. 
     
     
         17 . The heat exchange element according to  claim 11 , wherein the liner sheet 2 includes at least one layer of a gas shielding layer and at least one layer of a porous layer, and has a stacked structure thereof. 
     
     
         18 . The heat exchange element according to  claim 10 , wherein the porous layer of the liner sheet 2 includes nanofibers of a thermoplastic resin. 
     
     
         19 . The heat exchange element according to  claim 11 , wherein the porous layer of the liner sheet 2 includes nanofibers of a thermoplastic resin. 
     
     
         20 . A heat exchanger comprising the heat exchange element according to  claim 10 , an air supply blower and an air exhaust blower. 
     
     
         21 . A heat exchanger comprising the heat exchange element according to  claim 12 , an air supply multiblade blower and an air exhaust multiblade blower,
 wherein the heat exchange element has a passage for air supply and a passage for air exhaust which are stacks of a piece of single-faced corrugated cardboard 1 and a piece of single-faced corrugated cardboard 2,   the air supply multiblade blower is disposed at a downstream side of the passage for air supply of the heat exchange element,   the air exhaust multiblade blower is disposed at a downstream side of the passage for air exhaust of the heat exchange element, and   one bottom face of the heat exchange element allowing the area ratio of the liner sheet 2 to the sum of areas of the liner sheet 1 and the liner sheet 2 in a portion therefrom to a height position of 50% of the distance to be greater than or equal to 40% is positioned apart from a suction opening of the air supply multiblade blower, as compared to the other bottom face.   
     
     
         22 . A heat exchanger comprising the heat exchange element according to  claim 13 , an air supply multiblade blower and an air exhaust multiblade blower,
 wherein the heat exchange element has a passage for air supply and a passage for air exhaust which are stacks of a piece of single-faced corrugated cardboard 1 and a piece of single-faced corrugated cardboard 2,   the air supply multiblade blower is disposed at a downstream side of the passage for air supply of the heat exchange element,   the air exhaust multiblade blower is disposed at a downstream side of the passage for air exhaust of the heat exchange element, and   one bottom face of the heat exchange element allowing the area ratio of the liner sheet 2 to the sum of areas of the liner sheet 1 and the liner sheet 2 in a portion therefrom to a height position of 50% of the distance to be greater than or equal to 40% is positioned apart from a suction opening of the air supply multiblade blower, as compared to the other bottom face.