EROSION RATE CALCULATION FOR TUBEE= (0.47 x Z4.9 5x M xV 3x sin3) y1.5where, z= mass fraction of silica contained in ash m=density of steel kg/m3 =impingement angle (degrees) y=yield stress of steel v=flue gas velocity (m/s) on substituting the values,

E= 0.47x0.016x7830x34.64x1728x0.125 (250x106)E=0.237mg(steel)/kg(ash)