Abstract
Temperature distributions in Three-pass stove and two Cowper stoves of different design in details at Yawata Steel Works, firing, gases and airs supplied to them were measured. From these results, heat efficiency of each hot stove was calculated, and firing gases were compared with the hot airs used to the blast furnaces. Moreover, actual amount of hot airs given, to the furnaces and produced gases recorded by each gas-meter, real amounts of them measured by the method of Pitot-tube and true values of them caleulated from ores and others are examined.
