Hi all,

I saw the tracer study in the HVAC module demonstrated a while ago, and was wondering if it is really necessary for the work I am doing.  I am running transient simulations to determine the amount of time needed to reduce a gas contaminant to a low level (100 ppm for example).  It seems that the best thing I can do for this is to run a steady-state simulation with a zero contaminant concentration, then have the contaminant gas "appear" (time-dependent concentration) and run the simulation until it is all gone.  Is this essentially what the tracer study does?

Thanks,

Dan