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  2. Minimum efficiency reporting value - Wikipedia

    en.wikipedia.org/wiki/Minimum_Efficiency...

    The MERV scale is designed to represent the worst-case performance of a filter when dealing with particles in the range of 0.3 to 10 micrometers. The MERV value is from 1 to 16. Higher MERV values correspond to a greater percentage of particles captured on each pass, with a MERV 16 filter capturing more than 95% of particles over the full range.

  3. Air filtration in operating rooms - Wikipedia

    en.wikipedia.org/wiki/Air_filtration_in...

    Air filtration standards differ between the U.S. and other countries. The American ASHRAE rating system does not account for changes in filtration efficiency due to electrostatic charge. These MERV ratings do not account for a decrease in efficiency over the first few weeks of use due to a drop in static charge.

  4. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    According to ASHRAE standard 34, the R-number of a chemical refrigerant is assigned systematically according to its molecular structure and has between two and four digits. If there are carbon-carbon multiple bonds, there are four digits in all: the number of these bonds is the first digit and the number of carbon atoms minus one (C-1) is next ...

  5. ASHRAE - Wikipedia

    en.wikipedia.org/wiki/ASHRAE

    ASHRAE was founded in 1894 at a meeting of engineers in New York City, formerly headquartered at 345 East 47th Street, and has held an annual meeting since 1895. [4] Until 1954 it was known as the American Society of Heating and Ventilating Engineers (ASHVE); in that year it changed its name to the American Society of Heating and Air-Conditioning Engineers (ASHAE). [5]

  6. Trump's win could lead companies to push up prices. Here's why.

    www.aol.com/trumps-win-could-spur-retailers...

    President-elect Donald Trump's vow to raise tariffs could have Americans paying more for goods, from toys to auto parts, experts say.

  7. Clean air delivery rate - Wikipedia

    en.wikipedia.org/wiki/Clean_Air_Delivery_Rate

    MERV 14 filters are capable of reducing smoke particles by approximately 80% when operating at the filter's design velocity, so a CADR smoke rating on a simple filtering unit that uses a MERV 14 filter will be approximately 0.80 times the fan flow rate in CFM. If the filtering unit does not mix the test room's air very well, it may receive a ...

  8. Champion Rower, 27, Dies After Free-Diving Accident in the ...

    www.aol.com/lifestyle/champion-rower-27-dies...

    A champion rower has died while free-diving. According to a GoFundMe page, shared last week, 27-year-old Austin Regier died in the Philippines on November 14, 2024. "He was swimming with new ...

  9. 3 quick and easy DIY Thanksgiving dog treats... and number 3 ...

    www.aol.com/3-quick-easy-diy-thanksgiving...

    Thanksgiving is quickly approaching and if you're putting your menus together be sure to add these fun and easy-to-make DIY Thanksgiving dog treats. We know what it's like when you've sat down for ...