A computer algorithm for estimating infiltration and inter-room air flows.

Discusses the extension of an infiltration predicting technique to the prediction of inter-room air movements. Air flow through openings is computed from the ASHRAE crack method together with a mass balance in each room. Verifies technique by comparison to published experimental results. Results indicate that the simple model provides reasonable results for complex 2 way flows through openings. The model is as accurate as the available data, about+-20%. The air flow algorithm allows infiltration and forced air flows to interact with the doorway flows to provide a more general simulation capability.