Intermittent Drying
Kowalski and Pawłowski of Poznan University of Technology, Poland, studied the effectiveness of intermittent drying with respect to drying time, energy consumption, and quality of dried samples. By intermittent drying is meant here the convective drying with periodically changing both the temperature and the humidity of drying air. Cylindrically shaped kaolin samples were used for tests in these studies. The acoustic emission (AE) method was applied to monitor on line the development of material fracture for the purpose of detection of the material crack commencement, and thus to establish the moment at which the changes of drying conditions should be initiated. It was shown that drying at intermittent conditions leads to products of much better quality than drying at stationary conditions by almost the same duration of these processes. (RDC 5/5/2011) Energy consumption and quality aspect by intermittent drying
(384-390) Chemical Engineering and Processing 50, #4 (2011)