Engineering: Heat Transfer in Extruders III—Simultaneous Heating and Cooling

摘要

In my last column (Cereal Foods World, January-February 2010), I continued discussion about heat transfer in extruders. The issue of heat transfer and scale up, when heating or cooling of the extruder is required, was discussed. In this column, I continue with my discussion of this subject. In particular, the discussion of the efficacy of heating or cooling. In the last column, the following equation describing the efficacy of heat transfer was introduced.