| 摘要 |
Presented is a filtration system (10) for removing a target gaseous pollutant from a gas to be filtered in an indoor space, the filtration system (10) comprising: a sensor arrangement (12), which comprises a gas sensor (14) for sensing a concentration of a target gas in the indoor space; an air cleaner (20) which comprises a filter (22) for filtering the target gas from the gas to be filtered, and a ventilation system (24) for controllably driving air through the filter (22), wherein the filter (22) comprises a reversible absorption filter or a reversible adsorption filter; and a controller (26) for controlling ventilation system air flow settings, wherein the controller (26) is adapted, based on current sensor arrangement signals, and a previous history of the sensor arrangement signals, and previous ventilation system air flow settings, to: determine a degree of filter (22) loading with the target gas; determine from the degree of filter (22) loading with the target gas a concentration of the target gas in the air flow exiting the air cleaner (20); and determine when filter (22) regeneration is taking place and when air filtering is taking place from the determined concentration of the target gas in the air flow exiting the air cleaner (20). Further, a method of controlling a filtration system for removing a target gaseous pollutant from a gas to be filtered in an indoor space is presented. |
