Method for manufacturing counter flow total heat exchanger

A method for manufacturing a counter flow total heat exchanger comprising the steps of:

• inserting a first paper having a first width between a pair of rollers (210, 210a) having protrusions formed on the surfaces thereof to a single facer corrugated cardboard sheet (T) having flow paths (111c, 121c);
• adhering the corrugated cardboard sheet (T) to a middle region of a second paper having a second width that is wider than the first width, cutting the second paper, to which the corrugated cardboard sheet (T) is adhered, to a length equal to the length of guide corrugated cardboards (111, 121);
• cutting the second paper to form a liner (130) having triangular resin tube coupling surfaces (133) formed on both sides, wherein the liner (130) has dimensions corresponding to the cut guide corrugated cardboards (111, 121);
• cutting a hollow sheet (300) in which a plurality of air movement paths are formed side by side into resin pipes (115, 117, 125, 127) corresponding to the shape of the resin pipe coupling surfaces (133);
• adhering a pair of the cut resin pipes (115, 117, 125, 127) to the resin pipe coupling surfaces (133) of both sides of the liner (130) in such a way that the air movement paths (340) communicate with the flow paths (111c, 121c);
• and
• adhering the guide corrugated cardboards (111, 121) and the plurality of liners (130) to which the resin pipes (115, 117, 125, 127) are coupled to an upper surface in a height direction, wherein:
• the guide corrugated cardboards (111, 121) and the liner (130), which are formed in regions where primary heat exchange occurs, are made of a same paper material to improve heat and moisture transfer efficiency:
• the corrugated sheet (T) formed during the corrugation process includes flow paths with alternating peaks (111a) and valleys (111b);
• air side walls (113, 123) are vertically attached to both ends of the guide corrugated cardboards (111, 121), wherein the air side walls (113, 123) are configured to prevent external air leakage;
• the air side walls (113, 123) are made of the same paper material as the guide corrugated cardboards (111, 121) and are vertically attached to both ends of the guide corrugated cardboards (111, 121) at a height corresponding to the peaks (111a) and valleys (111b) of the corrugated sheet (T):
• the air side walls (113, 123) are attached to an upper surface of the liners (130) and have the same thickness as the corrugated sheet (T);
• regions other than the primary heat exchange regions are formed using resin pipes (115, 117, 125, 127) made of a resin material;
• the resin pipes (115, 117, 125, 127) are formed by cutting a resin sheet (300) into triangular shapes, and hypotenuse lengths of triangular resin pipes corresponds to the length of the guide corrugated cardboards (111, 121);
• the resin sheet (300) comprises a plurality of vertical walls (330) disposed side by side between a horizontally formed upper surface (310) and a lower surface (320) forming multiple air movement paths (340);
• and
• the liners (130) comprise resin tube coupling surfaces (133) formed as extensions of the paper material, the resin tube coupling surfaces (133) are configured to engage with the resin pipes (115, 117, 125, 127) to ensure airtightness and facilitate coupling, wherein each of vertical walls (330) within each resin pipe (115, 117, 125, 127) corresponds to each of the peaks (111a) and valleys (111b) of the guide corrugated cardboard (111, 121).