Directing against the abrasion behavior of water-wall tubes in circulating fluidized bed(CFB)boilers

an unequal interval grey forecast model GM(1.1)has been established on the basis of grey system theory and the measured data of high-temperature abrasion in CFB boilers

and during the process of consecutively increasing or decreasing the original data

the method of weighting being used for the time interval.The accuracy and feasibility of the model have been verified through comparison of calculated values with measured ones.This model needn't to consider complex affecting factors of abrasion

only few original data being needed

and comparatively accurate prediction can be made under condition of small samples

being convenient in calculation

the result of prediction can provide with basis and guidance for condition-based repair of the water-wall tubes in CFB boilers.