Odours emission from industrial and sanitary environmental engineering plants are more often due to social conflicts between the operators for the plants responsible for the emissions and the surrounding residents. Offensive odours leading the quality of life and can cause problems such as sleep disorders, migraine and loss of appetite. Odour emission characterization is currently discussed in international literature for opportune implementation. A method for continuous odour monitoring is based on the use of electronic noses. Electronic nose is an instrument which comprises an array of electronic chemical sensors with partial specificity and an appropriate pattern recognition system, capable of recognizing simple or complex odours. Scope of this work is to optimize a sensor chamber in order to improve sensor response signals in terms of stability, reproducibility and response time. A fluid dynamic study of a sensor chamber is presented. The numerical analysis of sensor chamber was performed by a computational fluid dynamic (CFD) in order to guarantee that all sensors are exposed to the same chemical sample under the same experimental conditions for the same time, reducing the presence of stagnant or recirculating regions.
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