| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heating device having improved heat exchange efficiency by installation of a plurality of heat exchangers. <P>SOLUTION: First and second heat exchangers 10, 12 are installed inside combustion exhaust EG generated by a combustion means (burner 8), a heated fluid (water W) is made to mainly absorb sensible heat from the combustion exhaust EG through the first heat exchanger, the heated fluid is made to absorb the sensible heat or latent heat from the combustion exhaust through the second heat exchanger to improve the heat exchange efficiency, and a combustion amount of the combustion means is controlled by a set temperature of the heated fluid to reduce fuel consumption. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
