MODELING OF A DRUM DRYER HEATED BY NATURA L-GAS BURNER FOR TEXTILE INDUSTRIES

Modelling of a drum dryer heated by natural gas burner for textile ind ustries. Drying on heated drums is a widely used technique in the weav ing and textile finishing industries. In 1992, Gaz de France, the Fren ch Textile Institute and a private company, AGI, with financial suppor t by the ADEME, conducted a study to optimize and model a drying drum heated directly by natural gas. This article describes the studies req uired to characterize the phenomena involved : - internal hot-air tran sfer (bibliographical study and physical simulation), - fabric drying on a heated surface. The finite differences method is used to model th e mass and heat transfers, which ave then validated by tests on an exp erimental drier. The findings show that the model is a useful tool, ev en though certain parameters require move precise analysis.