An empirical model for predicting air infiltration into refrigerated stores through doors

An empirical model based on Tammʹs equation was developed to predict the rate of air infiltration through doors into refrigerated buildings. The model sums the contributions of air-tightness, air infiltration due to door openings and the additional air exchange caused by forklift traffic through the doors. The model was validated against measured air infiltration rates through rapid-roll and sliding doors into 7 commercial coldstores with sizes ranging from 740 to 12,000 m3 operating at temperatures ranging from 3.3 to –21.8 °C.