Air leakage measurement and analysis in duct systems

The aim of that paper was to study the energy loss related to air leakage in duct systems. The leakage measurement setup was produced according t NEN-EN standards and the evaluation of data has been conducted by using power law model. Measurements were made on single circular ducts, flanged joint rectangular ducts, circular beaded slip joint ducts and rectangular flanged and drive slip joint ducts. The results show that the most of air leakage is from the joints. The air leakage can be improved by about 50 % when using sealing gaskets.