Dirt Devil SD20010 Support Question
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Question posted by Crazynykr on January 31st, 2023
Filters For Use For Sd20010
Current Answers
Answer #1: Posted by SonuKumar on February 1st, 2023 10:02 AM
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Answer #2: Posted by khanjee on February 1st, 2023 3:58 AM
HEPA stands for high-efficiency particulate air. These filters are often also called high-efficiency particulate absorbing and high-efficiency particulate arrestance (the measure of a filter's ability to remove synthetic dust from the air). Whichever name you know them by, their purpose is the same: to serve as an efficiency standard of air filter. HEPA filters remove at least 99.97% of airborne particles 0.3 micrometers in diameter. This percentage meets the United States Department of Energy (DOE) standard adopted by most American industries.
How HEPA Filters WorkHEPA filters remove contaminants from surfaces and the air by forcing the air through fibers that trap them. The fibers are typically made out of fiberglass. There is very little airspace left between the filters, so they can catch even the smallest particles. These particles are trapped in three different ways: diffusion, interception, and impaction. Each of the three methods differs slightly for maximum efficiency. Together, they provide unbeatable air filtering.
Diffusion is the result of the collision of gas molecules and the smallest particles in the area. The particles are impeded and delayed as they pass through the filter. Interception occurs when particles following the natural air stream come in contact with one of the HEPA filter's fibers and then stick to it. And with impaction, larger particles can't avoid the fibers and end up embedded in one of them instead. The three methods of trapping particles come together to give us that minimum of 99.97% removal.
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