Odour emission rate (OER)

Odour emission rate (OER)

Determines the odour concentration per time from a source.  It is calculated by taking the product of the odour concentration and flow rate from a source.  For example, if a stack has a volumetric flow rate of 2m3/s and the olfactometry analysis resulted in 220 OUE/m3, then the OER = 2m3/s * 220OU/m3 = 440 OU/s.  It is not sufficient to calculate the odour concentration but to determine the rate of odour emission during and evaluation of the source.

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