About Ventilation

What is ventilation?
Ventilation is a complex of actions and facilities used for air exchange arrangement to provide the specified air condition in the premises and in working places. Ventilation systems maintain admissible meteorological parameters in various premises. Ventilation system should create the internal atmosphere that meets the specified hygienic standards and technological requirements.
What is ventilation required for?
We are surrounded with air and breathe in and out 20 000 litres of air every day. How much healthy is the air we breath in?

There is a range of aspects to determine air quality.

  • Oxygen and Carbon Dioxide Concentration in the Air. Oxygen decrease and carbon dioxide cause stuffiness in the premises.
  • Harmful Substances and Dust in the Air. High content of dust, tobacco smoke and other substances in the air are harmful for the human organism and can cause various lung and skin diseases.
  • Odours. Bad smell causes discomfort or irritates nervous system.
  • Air Humidity. High or low humidity causes discomfort and even may result in acute disease attacks. Air humidity is important also for the internal atmosphere. So, decreased humidity in winter can cause shrinkage and cracks of wooden doors, window frames, furniture and high humidity in swimming pools and bathrooms and other humid premises can cause excessive humidity absorption and swelling.
  • Air temperature. A person feels comfortable in a premise with the temperature 21-23°C. Temperature variation causes the change of «comfort» well-being more or less that influences a person’s physical and mental activity.
  • Air Motion. Increased air speed in the premises causes the feeling of draft, and decreased speed causes air blanketing. Being inside we feel the impact of any of these factors.
Ventilation system arrangement
Properly arranged ventilation system is the only solution in this situation. It provides filtered air supply in summer and filtered and warmed supply air in winter as well as extract stale air removal from the premises.

Any ventilation system must include synchronous fresh air supply and extract air exhaust thus ensuring the ideal air balance in the room. In case of poor or insufficient air intake from outside the oxygen content decreases, humidity and dustiness level increase. If exhaust ventilation is not provided or it is not effective, polluted air, smells, humidity and harmful substances are not removed. Well coordinated operation of supply and exhaust air vents is one more important factor for properly arrangement of ventilation system. In case of exhaust ventilation only (i.e. exhaust ventilation in the bathroom) air from outside flows through all possible gaps in windows, doors and walling. Such non-arranged air supply brings dust ingress, smells and drafts.

The door grilles installed in the bathrooms, wall or window vents, open windows or window leaves serve as natural sources of supply ventilation and are used to compensate air removal. However, forced mechanical ventilation with centralized air supply and distribution is a much better solution.