| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a natural heat utilizing system capable of improving cooling and/or heating efficiency by cooling or heating the outside air by rationally performing heat exchange. <P>SOLUTION: This natural heat utilizing system has a general service water tank 11, a duct 18A mounted in the general service water tank 11, and a heat exchange functional portion 13 exchanging the heat with the general service water Wb in the general service water tank 11 by allowing the outside air OA to pass through the duct 18A. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
