Badanie in situ sprawności odzysku ciepła z powietrza wentylacyjnego w domu jednorodzinnym

This article presents the results of diagnostic tests of ventilation system with heat recovery carried out in two houses. The object of the research was a house built in the traditional technology in 1999, equipped with ventilation system with heat recovery during a thermo-modernization in 2011. AHU with heat recovery unit and air distribution ducts are located in unheated attic. Tests of ventilating air distributions and heat recovery efficiency were performed. By analyzing data from different measurement periods, repeatable results were obtained, which show the correctness of the method and the possibility of its application in the diagnostics of ventilation systems with heat recovery.