Domestic HEPA filtering net price exceeds the foreign
HEPA filter is an internationally recognized efficient filtration material, the particle diameter of 0.3 microns above the removal efficiency can reach 99.97%.
Advisory Mr. Lee 15914315027
"At present, air purifier America in more than 90%, by HEPA, is also widely used in Sweden, Switzerland, Germany, but the innovation technology in cleaning industry is still in the exploratory stage China."
The birth of HEPA and break through the bottleneck
HEPA was born in twentieth Century 40 in the USA during the three years of the "Manhattan plan", the plan to create the atomic bomb, also left a $1400000000 of property, including a 9000 people of Los ala Moss nuclear weapons laboratory. In the "Manhattan plan", in order to prevent the spread of radioactive contamination in the air, researchers have developed efficient HEPA filter membrane, which was applied to the biochemical clothes such as anti nuclear products, divided into H12 to U17 and other levels, according to the diameter of fine particles larger than 0.3 microns, filtration efficiency from 99.7% to 99.9999%.
HEPA consists of very fine organic fiber interwoven, on the particle capture capability is very strong, small aperture, large adsorption capacity, high purification efficiency, and has the water absorption, the 0.3 micron particle removal rate reached 99.97%. Therefore, it is very obvious effect of filtering particle. If it is used to filter cigarettes, filtering effect can reach almost 100% cigarettes, because between the particles in the 0.5 to 2 microns, not through the HEPA filter membrane.
After several years, bacterial and viral HEPA filter membrane in the prevention of the spread of organisms in the air, play a key role. HEPA filter system for medical use high energy ultraviolet radiation to kill bacteria and viruses are trapped in the filter medium. Gao Jie needs clarity place in precision laboratory, pharmaceutical production, atomic research and surgical operation, the system has been widely used.
In addition, some new model car class, using the filter. Modern aircraft use HEPA filter to air recirculation, to reduce the spread of pathogens in the air.
Nearly ten years, the HEPA technology from the military, medical, gradually converted to civilian use, widely used in USA air purifier and cleaning equipment.
In ten years, the technology breakthrough in the two technical bottleneck. The first is HEPA filter membrane life, from a few months ago to extend to several years. In addition, early HEPA because of the wind resistance is large, ordinary axial fan air pressure is not enough, as the centrifugal fan technology becomes more mature, highly effective technology makes HEPA filter membrane successfully installed in air purifier.
The wind is very big, is refers to the early HEPA filter membrane is too dense, unless the wind turbine with large power, otherwise it is very difficult in the machine to run home air purification. Wu Jixiang explained, it is like anti pollution masks, according to American standard, N95 respirator for 0.1 micron to 0.5 microns in diameter as small particles (sodium chloride aerosol), filtration rate in more than 95%. "In theory, N99 and N100 respirator filtration rate, reaching 99.97%, appears to be more effective, but why not develop? Because screen mask inside too close, will cause the wearer feel difficulty in breathing, suffocating."
In January 10th, a rare air pollution invasion multiple city in North China, Beijing, Hebei PM2.5 concentration detection site reached 900 micrograms / cubic meter, the people living in the southern city of Shanghai, also feel different degrees of difficulty in breathing.
WHO advice, average PM2.5 value standard and the daily mean value should be 10 micrograms / cubic meter and 25 micrograms / cubic meter. The reference value for the European and American countries, is demanding. In 2006, American revision of the PM2.5 standard, annual mean and daily mean value are 15 micrograms / cubic meter and 35 micrograms / cubic meter, ambient air quality standard for GB3095-2012 and Chinese Ministry of environmental protection issued in 2012 ", the PM2.5 standard value for years with an average of 35 micrograms / cubic meters, daily average of 75 micrograms per cubic meter. But the implementation of the standards of the time set for January 1, 2016.
The occurrence of air pollution, 36 times its PM2.5 content is more than WHO standard, 25 times American standard, 12 times Chinese standard. This year, the Peking University Interdisciplinary Research Institute, Centre for environment and health researcher Huang Wei in top international journal of epidemiology "America epidemiology" published an article that, by eliminating the age and sex, time effect and meteorological effects, when the concentration of PM2.5 for each additional 103 micrograms / cubic meter, residents of all death causes of excess mortality risk increases 2.29%.
In order to reduce the degree of damage by air pollution, people are hoping to create a more clean air circulation system in a relatively closed room.
After the statistics show that, "more than 80% of the time in one’s life is spent in indoor, indoor air quality, have a significant impact on human health."
Recently, Professor Wu Jixiang, professor at Shanghai Jiao Tong University School of telecommunications, air purification technology for 30 years said in an interview: "the Bund pictorial" originally by HEPA filter membrane on the biochemical clothing, is the most effective way to solve the China of indoor air pollution. He explained that, HEPA material is one of the most effective one of the air filtration material, on 0.3 micron (the equivalent of hair 1/20) particulate maximum interception efficiency can reach 99.97%.
Advisory Mr. Lee 15914315027
Related: PM2.5 filter HEPA filter air cleaner Hepa
From：Guangzhou Lingjie Air Purification Equipment Manufacturing Co.,Ltd. http://www.mrhoganrocks.com