| 摘要 |
An air cleaning system and method employs both particulate and gaseous contaminant removal from a flowing air stream to improve air quality in a selected environmental space. Particulate contaminants are removed by an appropriate filter (20). Gaseous contaminants such as VOCs, CO, and O3 are removed using a catalyst to oxidize such contaminants. The air stream is selectively heated to provide an adequate catalyst reaction temperature and the heat energy is then recovered by a heat exchanger (30). Various sensors (11, 21, 22, 23, 24, 31, 32) are employed to monitor flow rate, air composition, temperature and pressure. A controller (91) is programmable to control air quality for either minimizing contaminants or minimizing energy usage required to achieve a selected minimum air quality over a period of ti me.
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