| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve heat transfer performance while suppressing an increase of a material in extrusion molding in an air heat exchanger having a flat porous heat transfer tube manufactured by extrusion molding. <P>SOLUTION: The air heat exchanger 1 is equipped with a heating medium heat transfer tube 2 comprising a plurality of flat porous tube having broad plane parts 21 in a state of facing each other with a ventilation space for passing air toward a width direction of the plane part 21 between, having a plurality of passage holes 22 for making heating mediums internally pass therethrough in a row in the width direction of the plane part 21, and manufactured by extrusion molding. An outer face of the plane part 21 is uneven along a shape of an inner circumferential surface of each passage hole 22 when seeing the heating medium heat transfer tube 2 from a longitudinal direction. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
