| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchange type blowing method and device capable of cooling the temperature of a boiler blow water at an outlet of a heat exchanger to a safe temperature (normally below 95°C) for discharge even when the temperature of boiler feed water is high such as 60°C or higher without increasing a heat transfer area. SOLUTION: The heat exchange type blowing method for preheating boiler feed water and cooling blow water to discharge it by bringing the boiler feed water and blow water of a boiler into contact to exchange heat in a heat exchanger is characterized by exchanging heat by a plurality of heat exchangers provided in series, and the heat exchange type blowing device for preheating the boiler feed water and cooling the blow water to discharge it by connecting a blow water discharge pipe 3 from the boiler 1 to the heat exchanger 2, and bringing the boiler feed water and the blow water of the boiler into contact to exchange heat in the heat exchanger 2 is characterized by providing a plurality of heat exchangers 2 in series. COPYRIGHT: (C)2006,JPO&NCIPI
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