| 摘要 |
<p>The present invention relates to a method for increasing the temperature of raw water (inflow water) flowing into a boiler using waste heat remaining in sewage thrown out after using hot water. More specifically, the present invention relates to an apparatus which exchanges heat with the raw water flowed into the boiler by attaching a thermal exchanger in a type of beehive, plate, or brazing (plate thermal-exchanger), and a method thereof.</p> |
