Tag - air filtration

14 Oct

DIY your own low cost air purifier

U.S. Eastern time at 3 pm, 7 high school students from the country to showcase the work of the 24 high school students innovation challenge.

Olans air purifier OLS-K04 1

It is understood that the Harvard Youth Innovation Challenge is the Harvard China Education Forum for young people to build exhibition platform. From the organizing committee, the former Harvard Chinese Education Forum as educators China peak dialogue, and less related to the education of the students. This new challenge to attract students effectively to Harvard China education forum links to the Chinese to test the creativity of the young people and to the public affairs observation ability.

Beijing Royal School brought by “DIY your own low cost air purifier” display works won the first prize in the contest, get the education experts unanimously affirmed. The students from the city of the increasingly serious environmental pollution in the process of starting, the source of air pollution were analyzed, and jointly developed a reduce the cost of the air purifier, which is characterized by high efficiency, easy manufacture and low cost.

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13 Oct

How an Air Purifier Relieves Your Allergies

How an Air Purifier Relieves Your Allergies

Have you ever considered an air purifier for your allergies? Does your head feel like it’s in a vice grip, are your eyes are watering, is your nose running and your throat itching? Are you desperate to feel like yourself again? It may be time to consider an air purifier.

Olansi K15A Air Purifier

Olansi K15A Air Purifier

Why use an air purifier for allergies?

Using an air purifier offers long-term relief, one that can also lower the cost of managing your allergies. According to the Center for Disease Control and Prevention, 13.1 million doctor visits a year are due to allergies. Common triggers for allergies are dust, molds, pets, and seasonal triggers like pollen.

An allergy is simply your body’s overreaction to a foreign substance. An air purifier can greatly reduce the amount of allergens inside your home by tackling the problem at the source.

 

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13 Oct

Air Purifier for Spring Allergies

With the peak of the spring allergy season fast approaching, millions of Americans are keeping their tissue boxes close by. The budding trees and blooming flowers associated with the early return of spring mark an increase in itchy, watery eyes, sneezing and other allergy symptoms.

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Seasonal allergic rhinitis, or “hay fever,” affects more than 20 percent of the people living in the United States, according to the American Academy of Allergy, Asthma & Immunology (AAAAI). Allergies are triggered by substances called allergens, such as pollen or mold spores. Many trees, grasses and weeds contain small and light pollens that are easily carried by the wind, causing allergy symptoms to flare up in the spring.

Tips for allergy sufferers to find relief during allergy season

  • Do a thorough spring cleaning – windows, book shelves and air conditioning vents collect dust and mold throughout the winter that can provoke allergy symptoms.
  • Use a new filter in your air purifier. If you run your air purifier constantly, monitor your filter for build up.
  • Shower and wash your hair before bed – pollen can collect on your hair and skin.
  • Keep pets off of furniture and out of the bedroom. Pollen can cling to the dog or cat after being outside.
  • Keep car windows closed during peak season. Use air conditioning and point vents away from face.
  • When mowing lawn or gardening, wear a filter mask.
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13 Oct

Outdoor Air Purifier Makes Your Wait for the Bus 40% Less Smoggy

China’s campaign to wipe out air pollution reduced the levels of dangerous particulate matter in the air by 11 percent last year, according to the Ministry of Environment. But the country still has a long way to go before the air its citizens breathe every day can be considered healthy. Only eight out of the 74 cities surveyed met basic national air quality standards.

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In the meantime, public awareness is rising. Pollution masks are hot commodities and startups making new models for indoor air purifiers are driving prices down. Now, a new invention currently being tested in Hong Kong claims it can reduce air pollution in an open outdoor space by an average of 40 percent (h/t to Techweb).

Under the prototype of the patent-pending system, air is drawn into the system from the inlet located at bottom. The air current then passes through a bag filter, which is effective in removing fine suspended particles (PM10 and PM2.5), before coming out through the Louvre overhead.

Hong Kong has been testing 2 meter-by-3 meter purification station on one of its busiest streets, queen’s Road East in Causeway Bay, since March. Sino Green tells Tech in Asia one unit costs HKD 600,000 (US$77,400 million). (Update: an earlier version of this story referenced the Techweb article that said the project cost US$10 million to develop. Sino Green has informed us that figure is not accurate.)

Air quality at the station can be monitored remotely. Further planned enhancements include smart controllers to manage operating hours more efficiently, solar panels for energy, and a mist cooling system for summer months.

Techweb says the City Air Purification System will be tested at Beijing’s Tsinghua University next. If all goes as expected, it could expand to other mainland cities in the future.

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12 Oct

Italian man’s portable air purifier bedazzles onlookers

Deal with it. That’s the typical mentality most of the Chinese people have every time the air pollution gets worse.

But this Italian young man was apparently not happy about the status quo.

On Wednesday, he was spotted carrying a self-made air purifier, while riding on a bike in Chengdu, Sichuan Province.

According to the man, who called himself Mike, it cost him about 1,500 yuan($245) to build the device, using a home air purifier and attaching an oxygen mask to it.

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Moreover, he also installed a storage battery and inverter as power supply.

According to experts, it’s possible to convert room air cleaners into portable air purifiers.

However, even if it’s technically possible to do so, experts say it is quite unlikely to achieve the same effectiveness in air filtering as a good breathing mask can do.

And even in developed countries, where the air quality is much better, an air cleaner needs to exchange the air in a room seven to eight times every hour, in order to maintain desired indoor air quality.

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12 Oct

What to Look for When Shopping for an Air Purifier

A lot of people worry about the air they breathe. With all of the cars on the road and factories spewing out toxins, air pollution is pretty bad. What a lot of people don’t realize is that indoor air pollution can be even worse than the pollution outside.

Indoors we have to deal with things like dust, pet dander, mold spores, pollen, volatile organic compounds, fumes from cleaning products and other household chemicals, the list goes on and on. Some of the things floating around in the air inside your home can trigger allergic reactions, and some things can actually make you very sick.

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Because indoor air pollution is such a big problem, buying a good air purifier would be a wise investment and on this page we’re going to tell you what you should look for when shopping for an air purifier.

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11 Oct

The world’s largest air purifier is turning Beijing’s dirty air into diamonds

As smog season starts to hit China, Studio Roosegaarde, a design team led by award-winning Dutch designer Daan Roosegaarde, unveiled their pollution-fighting Smog Free Tower in Beijing last Thursday.

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According to the press release, at 7 meters in height, the Smog Free Tower is the largest air purifier in the world — and it’s mobile! Meaning that it can help to clean up other cities if it ever runs out of smog to eat in Beijing.Reuters reports that the tower sucks in 75% of the particles in the nearby air that are dangerous to humans, and then spits back out clean air into the surrounding space.

According to the press release, at 7 meters in height, the Smog Free Tower is the largest air purifier in the world — and it’s mobile! Meaning that it can help to clean up other cities if it ever runs out of smog to eat in Beijing.Reuters reports that the tower sucks in 75% of the particles in the nearby air that are dangerous to humans, and then spits back out clean air into the surrounding space.

 

 

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11 Oct

The classroom should be installed air purifier cited hot.

As schools in Beijing and other parts of northeastern China suspend classes because of the red alert over air pollution, many parents are demanding that air purifiers should be installed for the students.

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With major pollution days becoming more frequent, students are staying home, often without supervision. Their parents say it would be better if their children were in the classroom, and that’s why schools need to install air purifiers.

“Our school bought air filters last year. We did a little fund raising, with each parent throwing in several hundred for that. We’ve already bought two air cleaners for the class, both of which are installed.”

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09 Oct

Debate over whether should schools use air purifiers

With the repeat occurrence of smog in China, many parents call for installation of air purifiers in classrooms. Some parents even offered to pay for the purifiers. However it is refused by school authorities. It has caused hot debate over whether air purifiers should enter schools.

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Experts say air purifiers on the market are mostly designed for homes or offices. It still needs evaluation to know if it is useful in classrooms. Education authorities in Shanghai said they will coordinate with relating departments and work for a feasible plan.

Meanwhile, reports said a test has been held in a school in Beijing. After using the air purifier, the level of PM 2.5 in the classroom decreased, but with dozens of students in the enclosed room, the dense of CO2 has passed the healthy standards.

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05 Oct

What is an air purifier?

All home air purifiers are designed to help eliminate free flowing particles in the air. Although these particles are not visible to the human eye, they can trigger health problems like allergies, asthma, chemical sensitivity, headaches, and fatigue.

Air purifiers may be filter or filterless, with filterless air purifiers typically requiring less maintenance but also providing less effective filtration. Types of filterless air purifiers include electrostatic air purifiers and ionizers.

Air purifiers that use filters typically work by using a fan to pull air through a filter which is designed to capture airborne particles. The effectiveness of the air purifier depends on both the strength of the fan and the quality of the filter. The most effective filter material is HEPA (High-Efficiency Particulate Air), which removes 99.97% of particles that are 0.3 microns or larger. Complimentary technology used in the filter or unit may target specific airborne particles such as smoke, mold, or odor.

Types of Air Purifier

TypeDescriptionEffectiveness
HEPA (High-Efficiency Particulate Air)High efficiency HEPA air purifiers effectively capture airborne particles. The percent of particles captured is the highest of any air purification technology available.

High

Removes up to 99.97% of particles like dust, pollen, pet dander, mold spores and more.

Electrostatic PrecipitatorParticles are charged and then stick to oppositely charged metal plates within the air purifier.

Minimal

Does a poor job at circulating air. Requires frequent cleaning of the plates to maintain efficiency.

Ozone GeneratorNot safe and effective at removing pollutants. By design, they produce ozone, a lung irritant that can cause adverse health effects.

Harmful

Does not remove particles in the air. Ozone worsens air quality and can cause damage to lungs when inhaled.

Complementary Technology

Activated Carbon

Effective at removing unpleasant odors, gases, and chemicals in the air. Particles become attracted to, and then trapped within tiny pores in the activated carbon.

Good for: Odor, Gases, Chemicals

UV Light

Kills airborne germs, bacteria and viruses by damaging the bacteria and viruses’ DNA & molecular structure.

Good for: Bacteria, Viruses

Silver Ion Microbial Prevention Filter

Silver-infused filters capture and kill airborne microbes. Silver is naturally anti-bacterial.

Good for: Microbes, Bacteria, Viruses

Ionizer

Helps remove pollen, bacteria, odors, and chemicals in the air. An ionic-only unit provides inadequate filtration. Ionizers are added to HEPA units to improve their performance but should not be used as the sole method of filtration.

Good for: Pollen, Bacteria, Odor, Chemicals

Photo-Catalytic Oxidation (PCO)

Destroys gaseous pollutants by converting them into harmless products by the use of UV light and a catalyst (Titanium Oxide).

Good for: Gases

Pre-Filter

Captures large particles (hair, large dust particles) to extend the life of your air purifier filter.

Good for: Hair, Pet Fur, Large dust particles

Molecular Conversion Powder

Destroys tough odors like tobacco smoke at a molecular level, leaving the air smelling fresh and pure.

Good for: Smoke Heavy Odor

Thermodynamic Sterilizing System (TSS)

Destroys 99.9% of living microorganisms and proteins by exposing them to temperatures above 200 C (approx. 400F). Not available in conjunction with HEPA filtration.

Good for: Bacteria, Viruses, Mold

Olansi K09C3 Air Purifier

Olansi K09C3 Air Purifier

What to Consider When Buying an Air Purifier

  • Concern or target contaminent
  • Coverage Area
  • Efficiency
  • Style
  • Volume
  • Special Features
  • Cost, frequency and availbility of filter replacements
  • Energy Efficiency
  • Warranty and Service
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