CFD investigation on the effect of air temperature on air blowing cooling system for preventing tube rupture

In this study a solution for preventing tube rupture in the superheater region of the 320 MW Bisotoun power plant boiler, Iran, was suggested. Based on our previous study, the air blowing system which locally cools the tube in place of tube rupture was proposed. Due to huge differences in air temperature at different seasons in the region the air with different inlet temperatures was blown over the modeled tube. The CFD results showed that the inlet air temperature has no significant effect on cooling performance due to high rate of heat transfer to the air carrier tube.