current location:home>news>video
haze weather in fall and winter, which makes great impact on students’ health and study, has become the norm in recent years. air purifiers are in great needed to solve this problem. with different options of outdoor air systems (oas) and air purifiers, how do schools make the choice?
1. current status: air purifiers occupying the market
as increasing attention is paid to air quality, more and more air purifiers find their way into schools and families. air purifiers can filter contaminated indoor air, reduce harmful particles and effectively prevent and control pm2.5. air purifiers are welcomed by schools and parents for their easy installation and handling as well as economical prices.
however, air purifiers can only deposit the pollutants but not eliminate them, which may even lead to secondary pollution. the purified air is relatively clean but may lack of oxygen. the stuffy classroom environment can distract the students and make them tired and drowsy, and even result in rapid transmission of cold virus.
2. challenge: oas hitting the market
an oas is a combination of ventilation and air purification, which influences the market share of purifying equipment. outdoor air systems are more suitable for schools, using two parallel systems, simply put, the “forced ventilation and forced air delivery” systems. the indoor air is recovered, discharged and replaced with fresh air from outside to reduce indoor carbon dioxide just like the large indoor air exchangers can do. the outdoor air systems can also absorbs formaldehyde, haze, dust and fumes in the air as well as other common air pollutants, providing students with a healthy environment.
oas has very strict installation requirements. the system should be fixed to a specific position, requiring holes punching and pipes layout. it would be more convenient to install the oas prior to the completion of building construction or decoration. oas requires high up-front investment although its maintenance costs and energy consumption are a little lower than air purifiers.
3. controversy: what is the future of the air purification market?
air purifiers have significant competitive prices whereas outdoor air systems effectively cover the shortages of poor ventilation and oxygen deficiency of air purifiers. with stronger purifying potential to provide healthier environment, the outdoor air systems are believed to be the most needed product in the future for schools.
according to school authorities, outdoor air systems are considered difficult to install, complicated to maintain and expensive to manage. currently, oas purchase has not been listed in school procurement schedule due to the lack of dedicated funding. from the policy perspective, there are no relevant hard-and-fast rules to drive or push schools to choose oas. as a result, the widely use of oas requires collective social forces to push on for children’s health.