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Clean Air: Find Out How an Air Cleaner Can Improve Your Environment
Why is it important to clean the air?
“…indoor air is often two-to-five times more polluted than outdoor air and can be up to 1,000 times as dirty. The EPA estimates that most Americans are exposed every day to indoor air contaminants than can lead to serious health problems for some people, including cancer, respiratory ailments, fatigue and headaches.”
What is a Micron?
A millionth of a meter (μm). To put in perspective,
What is an Air Filter?
Device used to separate out contaminants from air.
What is an Air Cleaner or Air Purifier?
A device containing a filtering mechanism (filter), which is designed and used for collecting airborne impurities, such as, dusts, gases, smokes and fumes through the use of filters, electrostatic cells and/or absorbents. Typically an air cleaner has a motor blower.
How are air filters rated?
American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) has established standards, which primarily uses two different methods for describing filtration efficiency Test 52.2 and Test 52.1
What is ASHRAE?
What is the difference between ASHRAE 52.1 and 52.2?
Standard 52.1-1992: Consists of two tests, the atmospheric dust spot efficiency test and a dust arrestance test. The arrestance test quantifies filter efficiency by mass of particles removed or 'arrestance' and is generally only used to measure performance of prefilters or low efficiency filters - efficiencies measured by weight give little indication of their performance for the smallest, lightest particles (the most respirable and hazardous). The atmospheric dust spot efficiency test is based upon the amount of stain or discoloration that appears on a filter when subjected to specific test conditions and is not based on a specific particle size. The atmospheric dust spot efficiency is commonly shortened and referred to as ASHRAE efficiency.
Who is MERV and how does he rate?
MERV stands for Minimum Efficiency Reporting Value. The MERV rating evaluates the effectiveness of air filters.
What is a MERV rating?
MERV is an industry standard rating, so it can be used to compare air filters made by different companies. Some manufacturers also have their own rating systems.
Why not just open a window instead of using an air cleaner?
Unless you are fortunate enough to live in an area where the outside air is always between 72F and 78F you’ll waste the money spent heating or cooling the air in your home or business.
What is the difference between a media and electronic cleaner?
Electronic air cleaners have come to mean a wide variety of technology but most commonly refer to either electrostatic precipitators or ionizers. Electrostatic precipitators consist of a high voltage ionization section followed by a collector section which also uses a high voltage field to electrically trap the particulates which are later removed by washing the collector cell. Electronic cleaners may also be used to describe ionizers which simply emit charged particles out into the atmosphere which then attract and electrically bond to other airborne particles until they eventually become electrically bonded to a surface such as a wall, ceiling, floor or items within the area. Although uncommon, electronic filtration systems may also be used to describe ozone generators (uncommon), which are not recommended to be used as cleaners. (Source: http://www.epa.gov/iaq/pubs/ozonegen.html)
How does a media (paper) filter work?
Mechanical filters are made of fibers. Air is passed through a filtration media and the particles are trapped by:
What is an ESF?
Extended Service Filter. These filters feature longer life than standard filters, due to a lot more surface area.
HEPA (High-Efficiency Particulate Aerosol) - HEPA filter has a minimum particle collection efficiency of 99.97% for particles 0.3 microns in diameter.
What is an ionizer?
An ionizer is a device that electronically disperses negatively or positively charged ions into the air using high voltages. The charged ions attach to molecules and particles in the air and give them a charge so they can attach to one another and settle out of the air. For more information on the effectiveness of ionizers, visit the Environmental Protection Agency website.
How does an electrostatic precipitator work?
A high voltage power supply is used to generate an intense ionization field at the inlet side of the cleaning device. Airborne pollutants that pass through the ionization field become positively charged. The positively charged particles are then collected on the electrostatic collector cell fins where they become trapped and remain there until the cell is washed.
What is an ozone generator?
An air cleaner that is specifically designed to intentionally produce ozone gas are called ozone generators. Ozone is a toxic triatomic molecule consisting of three oxygen atoms. Two of the atoms make up the basic oxygen molecule while the third atom can detach from the other two and re-attach to molecules of other substances. Due to certain health risks, the National Institute of Occupational Safety and Health, the Occupational Safety and Health Administration, and the Food and Drug Administration have put in place public health standards to limit human exposure to ozone. For more information on ozone generators, visit the U.S. Environmental Protection Agency’s website to read their assessment on ozone generators sold as air cleaners.
How do I select the right air filtration system?
Contact Air Quality Engineering at 1-888-883-3273. We can get information from you regarding your specific application and assist you with your selection, or you can analyze the factors for yourself. We pride ourselves on the level of service and expertise that we offer.
What is free air?
The amount of air delivered from a fan or blower without any restrictions, ie: air filter, housing, ductwork…
What does delivered airflow mean?
Delivered airflow is the actual volume of air that the filtration system is moving.
What does depth loading vs. face loading mean and what is the advantage to each?
Depth loading a filter refers to a filter of various density. Initially the loser matrix of fibers will catch only the large particles, allowing the smaller particles to pass. As the matrix of fibers becomes more tight than smaller particles will be caught. The advantage to a depth loading filter is the amount of dust holding capacity.
What is a self-contained air filtration system?
Typically refers to a system that has both a filter and a motor blower to move the air.
What is an in–duct cleaner?
Typically refers to a cleaning device with just a filter. The motor blower is already in the ductwork.
What is an ambient cleaner?
A filtration system intended to clean the entire volume of air in a room (as opposed to source capture – see below).
What is source capture?
A product intended to draw in the pollutant directly at the source creating the contaminant (for example, using a small flexible arm to draw away the smoke from a soldering iron or arc welder).
How do I size an air cleaner properly?
Visit our sizing program, or call us at 1-888-883-3273 and we can help you over the phone.
What is Positive Pressure?
Positive pressure is when a room inside the building is held at a higher pressure than the surrounding rooms. Or to put it another way, positive pressure occurs when more airflow is pumped into a room then airflow drawn out. This ensures any air leaks in the room will flow from inside the room to the outside. This is most commonly used in clean room applications to prevent airborne contaminants from outside the room leaking in.
What is Negative Pressure?
Negative pressure is when a room inside the building is held at a lower pressure than the surrounding rooms. Or to put it another way, negative pressure occurs when more airflow is drawn out of a room then airflow pumped in. This ensures any air leaks in the room will flow from outside the room to the inside. This is most commonly used in hospital isolation rooms to prevent airborne viruses or bacteria from escaping the room into other rooms.
Does Sick Building Syndrome exist?
“Sick Building Syndrome” (SBS) is a term used to describe a situation in which occupants of a particular building have experienced acute health effects that seem to be correlated to time spent in the building, but a specific cause or illness can not be identified. SBS can be throughout the building or in a particular room or zone.
Which device is best for bar and restaurant cigarette smoke?
There are many factors that go into selecting the right cleaner for you restaurant or bar. Size of rooms, ceiling height, oblong shape of room, shape of ceiling, existing HVAC system, placement, type (electrostatic vs. media), etc. Visit our sizing program or call us at 1-888-883-3273 and we can help you over the phone. Some examples of good filtration systems for a restaurant or bar are: The SmokeMaster C-12, X-11Q, EverClear, CM-12 Miracle Air, F61 AutoClean, F72A and the F72B Electronic Air Cleaner.
What is a COANDA air pattern?
What is a dust collector?
Dust collectors generally refer to industrial cleaners used in high contaminant loading applications. They commonly use compressed air to backflush the cartridges free of excessive contaminant to allow air to continue flowing. Commonly used in the collection of dust, smoke or any other dry contaminant. Not typically feasible for use with wet applications.
What are PEL and TLV (Threshold Limit Value) and BEI (Biological Exposure Indices)?
PEL stands for permissible exposure limits enforced by the U.S. Occupational Safety and Health Administration, to protect workers against health effects linked to exposure to hazardous substances. PELs can be regulatory limits on the amount of a substance in the air or a concentration limit of a substance in the air and are based on on 8-hour time weighted average (TWA) exposure. Learn more about PELs on OSHA.gov.