| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase energy saving effects by reducing heating installation costs and heating and lighting costs. <P>SOLUTION: Hot water in a hot water layer 1 for hot water supply is utilized for heating liquid in a liquid circulation pipe 3 provided in a heating hot water layer 2 and supplying it to a heating apparatus. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
