Abstract
A steady state airflow distribution is calculated using CFD and concentration response factors from each cell and inlet to each observation point are obtained through concentration calculations on the flow field in a room. Assuming cells and inlets as contaminant emission points, the concentration equations of convolution of emission rate and response factors at observation points are set up based on the response factor method. Simultaneous equations of contaminant emission rates are formulated by applying a weighted residual method to the equations to minimize residuals between measured and calculated concentrations. Identification by solving the simultaneous equations is the inversion analysis of the convolution of concentration. Here we present the calculation method as well as examples of the identification of the source.
