Ventilation is a key element in ensuring a comfortable and wholesome climatic conditions in the building. In addition, a significant impact on the energy balance of the building. Due to the increasing number of scientifically proven harmful consequences of inadequate ventilation in buildings and the tendency to save energy, ventilation systems with recuperation are nowadays increasingly recognizable. The subject of the thesis is to highlight the important aspects that need to be considered when designing ventilation with recuperation. With the identification of harmful substances in the air and their effects on health, the importance of ventilation was described. Featured are various modes of ventilation. Central ventilation with heat recovery is currently the most effective and user-friendly solution for providing ventilation of new buildings (moderate and cold climate).
By comparing the local and central ventilation systems (with heat recovery) from different manufacturers, I came to the conclusion that the data are difficult to compare. There is no available unified system to compare important characteristics of the ventilation devices (thermal efficiency, flow rates at the same resistance, etc.). Manufacturers have different standards for determining the efficiency of avaliable systems. A large selection of technical specifications of the device does not provide a sufficient number of data that would allow evaluation of the functioning of the device. These data could misslead the customers as well as lead to poor investment.
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