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Tuesday, November 17, 2009

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The importance of drop size information has increased considerably during the last decade. Many spray applications such as evaporative cooling, gas conditioning, fire suppression, spray drying and agricultural spraying rely on this information for effective use. It is increasingly important for engineers to understand the basic atomization process and how it is evaluated. Earlier post "Visualize Spraying Nozzle Performance" presented some spray nozzle videos to help in visualizing the performance characteristics of the most common nozzle spray pattern types. In this post, a simple but important booklet may be downloaded to understand further the drop size in spraying technology.


Understand Drop Size
This booklet is designed to provide engineers with a working knowledge of drop size and related issues. It begins with a brief introduction to atomization and is followed by sections on drop size sampling techniques (methods available for capturing data) and drop size analyzers (methods available for recording data). Sections 4, 5 and 6 discuss the statistics and terminology used in drop size data analysis. Several drop size distribution functions and drop size mean diameter terms are defined and discussed. Factors affecting drop size distribution are discussed in Section 7. Section 8 reviews several forms of drop size data such as graphical and tabular and how data is used. Section 9 addresses practical considerations to take into account when evaluating drop size data. This section examines various aspects of data interpretation to reduce confusion when reviewing reports. Lastly, Section 10 provides a list of reference materials, suggested reading and information on drop size related organizations.

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posted by Webworm, 6:10 AM

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