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Author(s): Vasco Peixoto de Freitas
Ana Sofia Guimarães
Title: Characterization of a hygro-regulated wall base ventilation system for treatment of rising damp in historical buildings
Issue Date: 2008
Abstract: The treatment of rising damp in the walls of historic buildings is very complex, due to the thickness and heterogeneity of the walls. The techniques traditionally used for dealing with this problem (such as watertight barriers, injection of hydrofuge products, etc.) have sometimes proved ineffective, and that is why it is necessaryto find a new approach.In recent years, the Building Physics Laboratory at the Faculty of Engineering, University of Porto has been conducting experimental research on the effectiveness of the wall base ventilation system, using natural or mechanical higro-regulate systems to reduce the level of the damp area. This experimental research and thesimulations that were performed, clearly show that wall base ventilation is a system with potential.This paper presents the characterization of the hygro-regulated systems operation based on experimental studies developed in laboratory, which allowed the influence of the velocity of the air, condensation risk and the possibility of salt crystallization. This will also present the results of measurements conducted in churches in the North of Portugal in which these systems were implemented, with the purpose of validating its operation andestablishing criteria for programming the ventilator.
Subject: Engenharia civil, Engenharia civil
Civil engineering, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
Source: Jornadas Internacionales Tecnologia de la Rehabilitacion y Gestion del Patrimonio Construido
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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