A simple model is developed for the estimation of annual rates in single-family houses using indicators for both house tightness (air changes at 50 Pa) and site climate (the leakage-infiltration ratio). This technique is best suited to low-accuracy, large data set problems where detailed data are not available. The method is similar to the method attributed to Kronvall and Persily (ie, the K-P method), but is derived from a physical model, the LBL infiltration model.
This test method describes a standardized technique for determining air change rate in buildings under natural meteorological conditions by trace gas dilution
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