sudden “new coronavirus” Let the beginning of 2020 seems not so friendly, in the face of the epidemic, the community and the major car firms have extended a helping hand, to add a lot when the temperature turns warm again . Of course, auto companies and never give up the chance to pursue their “hot spots”, open the mailbox, health car, N95 and other words full inbox, then what in the end is healthy car? It will hinder the new coronavirus it?
Anti-haze ■ Antivirus Keywords: isolation, filtration
car is a relatively closed space, anti-fog haze antivirus Ye Hao, the core is ensure airtight compartment, isolated from the external environment. Then, the vehicle to ensure good air tightness is certainly the foundation, the other is hindering the outside world, “toxic” air into the outside air into the car’s main window is the air-conditioning system, air filter become anti-fog and haze antivirus key .
to keep the car clean environment is nothing more than two points, a good airtight and good air conditioning filter system , Tesla ” and biochemical [123 ] mode “on this basis, increase the amount of wind, a positive pressure in the car, in order to prevent outside air fleeing vehicle. The words
Now you’re in a growing number of car ads see
of “anti-fog haze”, “filter PM2.5” and the like, in fact, is to use these models the air conditioning filter HEPA level, it can more effectively filter fine particulate matter, in fact it is not considered any special configuration. A vehicle does not have this feature for a HEPA filter can still reach the level of anti-fog and haze effects.
equipped with anti-fog haze filter models approach these natural is good, but a HEPA filter level is about 100 dollars only, that we should not be fooled by the hype sales terms,
[ 123] we just simply talk conditioning filter, this does not mean that the air inside to health, because if the outside air quality is good, in fact, never use anti-fog and haze filter. Another level on environmental protection is a vehicle air pollution, if all the materials used car parts are likely to fail evaporation of harmful gases.
State “vehicle interior air quality assessment guidelines” to define the concentration limit eight kinds of volatile contaminants in the passenger car, the car benzene, formaldehyde, TVOC volatile contaminants are contaminated source, because this is a recommended standard, so there are still many manufacturers to “unconscious”, I have come across a car, the name “green X” under the banner of environmental protection, anti-fog and haze just switched to a filter only, but into car air still “choking.” However, the issue of environmental protection, not in the context of today’s discussion.
■ What is HEPA filter? It is not so simple
With the popularity of air purifiers, over the years many people have a general idea HEPA filter, HEPA is a High efficiency Particulate air filter shorthand, that is, high efficiency air filter. How specific should understand it?
in accordance with the European standard EN1882, the HEPA filter is divided into five levels: coarse filter, in effect filter, sub-efficient filter, the HEPA filter and ultra high efficiency filter.
The particle diameter of 0.3 μm the percentage of particulate filtration efficiency of more than 99.9 sieve is referred to as H12
, we say to PM 2.5 is 2.5 μm diameter particles, the HEPA filter filters PM 2.5 is more than enough.
Purifying HEPA filter is not simply as a sieve to filter out particles larger than a mesh to purify the air, but on the van der Waals between the screen and the fine particles adsorption force is formed, it is more than 0.5 μm for the particulate matter filtration efficiency and 0.1 μm or less are good.
0.1 μm or less do Brownian motion of particles, the smaller the particle, the more intense Brownian motion, the more the number of impacts, like adsorption. And particles above 0.5 μm coasting, the larger the mass, the greater the inertia filtering effect has been achieved.
In comparison, a diameter of 0.1-0.3 μm HEPA particulate matter has become difficult to remove. This is why the industry toFiltration of particulate matter of 0.3 μm HEPA filter defined level.
■ talk about those “healthy car”
Tesla “biochemical model” look? Tesla Model X on the global conference a few years ago, Musk known as the car air-conditioning systems in virus filtration 800 times stronger than the other cars. Tesla emphasized that “biochemical model” and the general model of PM 2.5 filter model as the basic principle, but there are some differences.
Tesla greater air filter, enable biochemical mode when the fan will work at maximum air flow, so that the car is full of pressure to prevent gas fleeing car.
▲ Tesla biochemical model
Geely recently announced that it will invest 370 million yuan in advance, starting with virus prevention features “full health car” research and development, The first model is the N95 level of protection Ji Lijia occasion, it is expected to produce 150 advance.
BYD is the earlier propaganda “green clean” system models, all of its current models are equipped with anti-PM 2.5 filter.
Roewe promote, all models N95 standard high standard vehicle air conditioning filters, anti-bacterial and anti-allergic negative ion generator and the functional layer, official propaganda, surrounded by adsorption, damage structure, three step purification sterilization, negative ion generator can quickly reduce bacteria in the air in one hour, the sterilization rate is more than 85 percentage; antibacterial antiallergic function layer over 99 24 hours inhibitory percentage.
■ “Health cars” new coronavirus they can prevent it?
novel coronavirus belonging to the genus of novel coronavirus β, enveloped, circular or elliptical form of particles, often pleomorphic, diameter 60 ~ 140 nm (1 nm = 0.001m; nm: Nanometer, m: m), but greater than 0.74 micrometers droplet diameter is a major mode of transmission coronavirus, so from the perspective of the propagation routine, the “health car” is theoretically possible defense parts of the virus. However, the virus is not any time in the air, the car can play a role in isolation, the key is to bring their own face masks, well disinfection.