Studies on Infrared Drying of Paper, Use of Integrating Spheres in FTIR-Measurements, and Heat and Mass Transfer Inside Paper

摘要

The effect of various factors on the efficiency of infrared (IR) dryers has beenstudied by modeling and simulation of radiative heat transfer in these dryers. Generally, 20-35% of the radiation from electrical IR dryers becomes absorbed by the web, whereas in the case of a gas-fired dryer 30-50% of the energy becomes absorbed. The efficiency is strongly dependent on the dryer design, power, geometry, cleanness, and the material to be dried.