HEAT EXCHANGE ELEMENT

A supply air passage and an exhaust air passage alternately formed between heat transfer sheets laminated on each other with a predetermined interval; an opposed part formed in a center of the heat transfer sheet in each air passage, in which supply air and exhaust air flow opposite to each other with the heat transfer sheet therebetween; an orthogonal part formed in each end portion of the heat transfer sheet in each air passage, in which supply air and exhaust air flow orthogonal to each other with the heat transfer sheet therebetween; and a shielding rib preventing airflow leakage from regions other than inlet and outlet ports of supply and exhaust air are included. The heat transfer sheet is disposed so that a direction in which the heat transfer sheet is wound up is perpendicular to the direction in which supply air and exhaust air are allowed to pass through in the opposed part. Even when the heat transfer sheet is deformed by humidity, structural problem, and the like, high heat exchange efficiency performance can be obtained stably.