| 摘要 |
PROBLEM TO BE SOLVED: To increase an amount of heat transfer from combustion gas without requiring a high cost.SOLUTION: A radiant tube type heating device 1 has a heat transfer acceleration body 5 which is arranged between an inner wall surface of a radiant tube 2 and a recuperator 4, absorbs heat of combustion gas and transfers the absorbed heat to the recuperator 4 as radiation heat. Thus, the radiant tube type heating device 1 can increase an amount of heat transfer from the combustion gas without requiring a high cost. A surface of the heat transfer acceleration body 5 is preferably coated with high heat radiation paint. Also, the heat transfer acceleration body 5 is preferably made of a material having higher heat conductivity than the material of the recuperator 4. |
