Calculation of inter-room air movement for multi-room building energy analysis.

Presents a model for computing the infiltration and air flow between rooms of a multi-room building in terms of basic principles of fluid mechanics. Incorporates model into a comprehensive loads-predicting computer program, and calculates air flows, room temperatures and heating loads for a typical townhouse. When the inter-room openings of a low-rise structure are large compared to the envelope openings, the infiltration and total load can be accurately and more quickly computed by assuming no resistance to air flow between rooms. This property will also allow simplified calculations for high-rise buildings with many rooms.