| 摘要 |
A boiler using waste heat is provided to increase the efficiency of the boiler by raising the temperature of water using the waste heat of the boiler to supply the heated water to a water supplying pipe again. A boiler tank(10) is provided with a combustion chamber and a heat discharging pipe. The boiler tank has an upper portion coupled to a water supplying pipe(11) and a lower portion coupled to a water discharging pipe(12). A first heating unit and a second heating unit are provided. The first heating unit communicates with the combustion chamber to heat water in the boiler tank. The second heating unit is provided inside the boiler tank. A first temperature sensor is provided in the boiler tank to measure the temperature of water. A controller controls the first and second heating units. A connecting pipe communicates to the heat discharging pipe outside the boiler tank. A waste heat tank has a heat exchanger(30) to heating water using waste heat. A circulation pipe(40) communicates the water supplying pipe and the water discharging pipe. |
