sekoitusilmanvälityksenä

Sekoitusilmanvälitys (Finnish for "mixed air transmission" or "mixed air intermediate relay") refers to a control strategy in HVAC (Heating, Ventilation, and Air Conditioning) systems. It is primarily employed in ventilation systems to manage indoor air quality and thermal comfort by precisely controlling the amount of outdoor fresh air and recirculated indoor air that is mixed before being supplied to occupied spaces.

The core principle of sekoitusilmanvälitys is to adjust the ratio of outside air to return air based on various factors. These factors can include the occupancy level of the space, the detected levels of indoor air pollutants (such as CO2, VOCs, or particulate matter), and the outdoor air conditions (temperature and humidity). For instance, when occupancy is high or pollutant levels rise, the system will increase the proportion of fresh outdoor air to dilute contaminants and improve air quality. Conversely, during periods of low occupancy or when outdoor air is extremely cold or hot, the system might recirculate a larger percentage of indoor air to save energy on heating or cooling.

This method allows for a more nuanced control than simply supplying 100% outside air or 100% recirculated air. By dynamically adjusting the mix, sekoitusilmanvälitys aims to strike a balance between maintaining healthy indoor air and minimizing the energy consumption associated with conditioning large volumes of outside air. It is a key component in achieving energy-efficient and comfortable indoor environments in modern buildings. The specific algorithms and sensor inputs used can vary significantly depending on the building's design and operational requirements.