| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat exchanger using ground heat, capable of efficiently extracting ground heat, and an air conditioner using it. <P>SOLUTION: In this heat exchanger using ground heat, air is distributed in an outer cylindrical tube 20 buried in a ground 14, whereby heat exchange is performed between the heat of the air and the ground heat. A film 22 containing a minute carbon material such as carbon nanotube is formed in at least a part of the inner wall surface of the outer cylindrical tube 20. An inner cylindrical tube 30 is inserted into the outer cylindrical tube 20. According to this, the heat exchange can be efficiently performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
