Adopting heat flux distribution model of the superheater

which can reflect the influence of flue gas temperature deviation a- long the direction of height

the heat flux density distribution of superheater has been calculated under different level of flue gas tem- perature deviation

and then corresponding tube-wall temperature of the superheater being computed out.Results show that there are two high wall-temperature areas existing in horizontal section and outlet section of the superheater in the case of smaller flue gas temperature deviation along the direction of height;the wall-temperature in outlet section is decreased in the event of increasing the said deviation

but the wall-temperature in horizontal section being substantially increased.