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Power Efficiency Guide

Ultimate Guide to Power Efficiency

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Types of Designs

Low or high energy


Low efficiency and liquid waste disposal for low-energy designs; operating costs for high-energy designs


Pressure Drop

Low energy—0.5 to 2 cm H2O; high energy—2 to 100 cm H2O

Overall Efficiency

Low energy—high for >10 /m; high energy—high for >1 /m

Partial List of Suppliers

Aerodyne Development Corp; Air-Cure Environmental Inc./Ceilcote Air Pollution Control; Air Pol Inc.; Beco Engineering Co.; Ceilcote Co.; Croll Reynolds Co. Inc.; Fairchild International; Hild Floor Machine Co. Inc.; Joy Technologies Inc./Joy Environmental Equipment Co.; Lurgi Corp USA; Merck & Co. Inc./Calgon Corp; Safety Railway Service Corp/Entoleter Inc.; Sonic Environmental Systems; Spendrup & Associates Inc./Spendrup Fan Co.; Svedala Industries Inc./Allis Mineral Systems; Kennedy Van Saun; Wheelabrator Air Pollution Control; Zurn Industries Inc./Air Systems Div.

A particulate scrubber or wet collector is a device in which water or some other solvent is used in conjunction with inertial, diffusion, or other forces to remove particulate matter from the air or gases. The scrubbing process partially mimics natural processes where dust-laden air is cleaned by rain, snow, or fog. The first industrial scrubbers attempted to duplicate this natural cleaning, with dusty air ascending through a rain of liquid droplets in a large, vertical tube. Subsequent developments reduced the space requirements for scrubbers.

The first patent for a particle scrubber design was issued in Germany in 1892, and the first gas scrubber with rotating elements was patented about 1900. Venturi scrubbers were developed just after World War II, mainly in the United States, and represented a breakthrough in scrubber design (Batel 1976).

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