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Wärme‐ und Stoffaustausch‐Probleme bei der Herstellung von Lebensmitteln auf Walzentrocknern
Author(s) -
Fritze H.
Publication year - 1973
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19730250707
Subject(s) - drum , vapours , environmental science , airflow , evaporation , process engineering , materials science , pulp and paper industry , waste management , mechanical engineering , engineering , thermodynamics , physics , neuroscience , biology
Problems of Heat and Mass Exchange at the Manufacturing of Foodstuffs on Drum Dryers The drum dryer as contact dryer will be presented by means of several drying characteristics. Bases on these experiences there will be demonstrated possibilities of influencing the heat and mass exchange on the drum dryer in respect to a conserving drying by variation of the operation conditions, as drum speed, feeding temperature and air flow. Especially the exhaust of vapours by means of particular devices, as casing of the drying zone, has an important influence on the evaporation capacity respectively on the heat transmission coefficient. In addition to an improved quality of the final product with the improved process it can be demonstrated a better efficiency by saving of investment by a better exploitation of the available drying surface. Additional vapours exhaustion devices have stood the test on drum dryers with high speed and can be recommended there particularly.