| 摘要 |
PURPOSE:To eliminate the possibility of breakage by a method wherein a ceramic pipe, communicating the supplying port of a fluid to be heated with the outflow port thereof, is suspended in parallel to the axial direction by a compression spring cooled by the fluid to be heated. CONSTITUTION:When high-temperature exhaust gas is flowed into the flow path of heat transfer fluid in a frame body 1 and the normal-temperature fluid to be heated is sent into a plurality of ceramic pipes 5, provided with supporting pipes 8, 9 communicated with the through holes 10, 10' of opposing wall surfaces 2, 2', from a supplying port 3, heat exchange is effected between the high-temperature exhaust gas and the fluid to be heated through the walls of the ceramic pipes. The ceramic pipes 5 can be slid slightly into the axial direction thereof by the compression springs 14 provided between the supporting pipe 8 of one side and the wall surface 2. According to this method, heat may be retrieved efficiently from the high-temperature exhaust gas or corrosive gas of 1,000 deg.C or more, further, ununiform thermal ecpansions or contractions, generated in respective ceramic pipes, may be absorbed and the breakage of the ceramic pipes may be prevented. |
