| 摘要 |
In order to reduce the energy demand of a room (2) ventilated by a ventilation system (11-17), the windows (4) and non-transparent elements of the outer wall (3) are designed so that their heat-transfer coefficients (kF and kW respectively) are lower than 1 W/m2?K. Further, the supply air enters the room (2) near its floor (9), the temperature of the supply air not exceeding comfort value, 20-22.degree.C, and its in-flow velocity in the occupied area not exceeding air velocity limits stipulated by comfort requirements. Electrical lighting units (7) and heating units (8) are provided, the power requirements of which are substantially equal. Due to the k values specified, draughts and the subsidence of cold air at the windows (4) can be avoided, so that the amount of energy that is provided via insulation through the windows (4) and by the lighting units (7) and/or heating units (8), or emitted by people (19) occupying the room (2), is sufficient for satisfying the demand. The removal of air contaminants is effected directly in the ascending air stream which is "driven" by the convection raising-current caused by occupants (19) and machines present in the room (2). |
