low energy building, air-heating system, air flow, microclimate, heat losses, air tightness
Abstract
The premises in low energy buildings can be heated by air-heating systems. However, the heating system will work effectively only if the building heat losses will be compensated by supplying of not higher than 50 °C air temperature and not more than the minimum amount of required fresh air for building ventilation. The other issue is to maintain the indoor comfort by ensuring the correct air velocity and supplied air temperature differences in operating zone of premises. This paper presents the theoretical studies of air heating system effective use and experimental results of indoor climate parameters by supplying the heated air in premises.