Abstract
Closed-space fires often occur in Hungary, so it is necessary to examine the effects of fires onbuilding structures, taking into account Hungarian architectural features. Fires inside the buildings arecharacterized by intense heat development and smoke generation that can cause permanent damage to thebuilding structures. Heat and smoke extraction during fire extinguishing is based usually on natural ventilation.Not only being a non-effective process also makes it more difficult to accomplish firefighting tasks.Experiments in this research have been conducted with mobile positive pressure ventilation (PPV) in order toincrease the efficiency of the firefighting process and to reduce the adverse effects of fires. The tests have beencarried out in unused buildings, providing real conditions. Practical application has been examined in order toreduce the harmful effects of closed-space fires and to provide guidance for professional use. This researchbased on observations and experiments contributes to enhancing fire safety.
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