VENTILATION
REFRIGERANTS
CIAT Vectios air-to-air rooftop units address the most specifi c requirements for every application with maximum comfort, energy effi ciency and indoor air quality.
Green and well-ventilated buildings can generate improvements in cognitive function, wellbeing and mental health, and students are more productive and less likely to be out sick in a bright, well-ventilated space with lots of daylight.
Evidence of poor ventilation Pathogens and VOCs may be too small for the naked eye to see, but
indictors of poor ventilation can be spotted. Ventilations grids or airbricks that appear dirty or blocked are a sign that the school’s ventilation systems may need some attention. Mould or mildew can also occur after long-term exposure to poor IAQ.
A school should have a ventilation strategy to reduce the risk of aerosols
and droplets transmitting Covid-19, or other communicable diseases and respiratory infections. A ventilation risk assessment will help to identify any poorly ventilated areas, such as areas without an openable window or rooms feeling stuff y and unpleasant. Students may start to feel sluggish, suff er from headaches and fi nd it harder to concentrate. Mechanical ventilation, such as an HVAC system with effi cient fi ltration, can help to protect building occupants from the negative cognitive eff ects of particulate matter 2.5 (PM2.5) and carbon dioxide (CO2
). In addition
to acute impacts on cognitive function, reducing exposure to PM2.5 is associated with many other health benefi ts including reductions in cardiovascular disease, asthma attacks and premature death.
Monitoring air quality Measuring IAQ in real-time can make IAQ visible to occupants. It can allow
for actions to be taken to improve IAQ before negative eff ects, including physical symptoms, can occur. CIAT provides expert solutions to help improve IAQ. Many new builds
are fi tted with smart meters, monitoring the effi ciency of mechanical ventilation heat recovery (MVHR) units or air-conditioned spaces where heat pumps utilise fan coil units as the main source of heating and cooling. Some solutions include MVHR products as standalone or in conjunction with fan coils, providing an opportunity to install a quality IAQ monitor next to the smart meter. IAQ sensors and monitors allow data to be displayed and used for demand-controlled ventilation (DCV). When pollutant levels increase, the MVHR will adjust the air-change rates cleaning the space. As soon as levels have dropped, the MVHR will return to the previous level. The result is a clean, energy-effi cient space. Teachers will fi nd that good IAQ is not only good for students’ health and safety. It is also good for their performance through increased productivity, fewer sick days and better cognitive function.
Results across the COGfx studies show with the right strategies in place buildings can play a signifi cant role in improving cognitive function, health and productivity, while providing performance and health benefi ts to students and staff .
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Humidifi cation, Dehumidifi cation and Evaporative Cooling
After: No misting
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