초록 ▼

Air quality in a interior space is monitored by a sensor and, to determine air renewal demand, the sensor signal is compared with a normal or reference value. For demand controlled ventilation, a switching signal is triggered for changing the amount of outside air supplied when air renewal demand ch

Air quality in a interior space is monitored by a sensor and, to determine air renewal demand, the sensor signal is compared with a normal or reference value. For demand controlled ventilation, a switching signal is triggered for changing the amount of outside air supplied when air renewal demand changes. A reference ventilation is performed daily, at a time of day when outside air quality is satisfactory, typically in the early morning hours. Measured quality of the air from the reference ventilation is used in setting or resetting the reference value, e.g. adaptively.

대표청구항 ▼

[ We claim:] [1.] A method of ventilating an interior space, comprising:reference ventilating the interior space with outside air and obtaining a sensor measurement value for an air quality in the interior space, and using the sensor measurement value in determining a reference value; andrepeatedly

[ We claim:] [1.] A method of ventilating an interior space, comprising:reference ventilating the interior space with outside air and obtaining a sensor measurement value for an air quality in the interior space, and using the sensor measurement value in determining a reference value; andrepeatedly obtaining a further sensor measurement value for the air quality in the interior space, comparing the obtained further sensor measurement value with the reference value and, depending on by how much the obtained further sensor measurement value differs from the reference value, adjusting an air flow magnitude, of an air flow from outside into the interior space, wherein the reference ventilating is effected at a time of day when the outside air has a quality which is relevant in determining how to adjust the air flow magnitude.