| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot air circulating device which achieves energy savings by reducing the amount of combustion at an air heat burner. <P>SOLUTION: The hot air circulating device 1 is provided with a hot air circulating furnace 2, a hot air duct 21 having the air heat burner 3 therein, and a reflux duct 22. Fuel 101 is supplied to a fuel supply header 31 of the air heat burner 3 and air 103 with residual oxygen which comes from a micro gas turbine 5 is supplied to an air jet cylinder 32 via a combustion air duct 4. A combustion gas 106 resulting from the combustion of the air 103 and the fuel 101 using the air heat burner 3 is mixed with an ambient gas 105 in the hot air circulating furnace 2 which is passed through a through passage 23 via the reflux duct 22, to obtain hot air 107. The hot air 107 is supplied into the hot air circulating furnace 2 by the hot air duct 21. <P>COPYRIGHT: (C)2004,JPO |
