| 摘要 |
The invention describes an outlet system in which a characteristic of one of gas and/or a liquid, for example the percentage CO2 in air, is measured in a central outlet duct ( 2 ). The outlet system comprises local outlet ducts ( 5, 6, 7 ) that are in flow communication with the central outlet duct ( 2 ). The flow through the local outlet ducts is partly determined by corresponding flow regulators ( 25, 26, 27 ) By means of selective setting of these flow regulators by a control system ( 22 ) the local value of the characteristic can be calculated using measured values in the central outlet duct ( 2 ) and the positions of the flow regulators ( 25, 26, 27 ). By means of the invention costs of sensor controlled ventilation systems, in, for example, residential and utility building, are reduced. |
