FLUID HEATING DEVICE WITH RADIATOR

摘要

PURPOSE:To effectively transfer combustion heat without burning fire combustion means and a heat exchange part to prevent incomplete combustion by providing a plurality of gas-permeable radiators disposed by inclining a first heat transfer tube group with respect to the flowing direction of a combustion gas, and a second heat transfer group disposed at the downstream in the vicinity of a first heat transfer tube group. CONSTITUTION:Gas-permeable radiators 20 are disposed in parallel to heat transfer tube 19a and 19b and slantly with respect to the flowing direction of a combustion gas between respective heat transfer tubes 19a and 19b. The radiators 20 radiate radiant heat to a second heat transfer tube group as well as a first heat transfer tube group 10 positioned at both sides of each radiator 20. As the radiator 20 a honeycomb plate is used. Since the honeycomb plate has a tendency to have a large difference in temperature distribution between a part near to the heat transfer tube and a part far therefrom and further a large temperature difference is imparted at the time of ignition and at the time of fire-extinguishment, the radiator is made from ceramics having excellent heat resistance and thermal shock resistance. At the upper part of in the vicinity of the first heat transfer tube group 19 and the radiators 20, the second heat transfer tube group with fins 21 is disposed in a zigzag manner.