Experimental research on flue gas flow characteristics of foursquare tangential circle boiler in cold aerodynamical field

Aimed at the problem of flue gas temperature deviation in horizontal flue and taking a 300 MW/1 025 t/h boiler as prototype to perform cold model tests of the whole boiler, the flue gas flow in upper furnace, horizontal flue and reversal chamber are simulated; and then the condition of flue gas speed field resulting in flue gas temperature deviation in horizontal flue and distribution characteristics of backward flue gas flow, are clarified.