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Article: Understanding drying methods; Convection, infrared, radio frequency and combination systems: a choice of drying methods allows processors to select technologies that best suit the process. A primer outlines the advantages and disadvantages of each heating method.(Dryers)
- Article from:
- Process Heating
- Article date:
- October 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Drying is the removal of a solvent from a product. This term sometimes is used interchangeably with heating or curing. However, heating is simply raising the temperature of a product, while curing is holding a product at a temperature for a given time to complete a reaction. Methods of heat transfer used in dryers and ovens include conduction, convection, infrared/radiant, and radio frequency. Radio frequency is the transfer of energy to create heat. Each method has benefits and challenges for manufacturing processes. As a result, it is common to design combination ovens to utilize the benefits of two or more technologies together. For example, a dryer utilizing both ...