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Author(s): M. PINTO
Title: Experimental characterization of hybrid ventilation systems in residential buildings
Issue Date: 2005
Abstract: In the recent past, residential buildings in temperate climates were ventilated by the daily opening of windows and by exaggerated window and door permeability. Energy conservation concerns have led to better qualitywindows and lower air permeability that consequently increased the risk of condensation whilst decreasing indoor air quality.Because of the variation in natural factors, such as wind speed and the stack effect, natural ventilation systems are unlikely to permanently provide ideal ventilation rates. As such, we will characterize the performance ofhybrid ventilation systems (air intake through automatically regulated louvers in bedrooms and living rooms, natural exhaust in bathrooms and fan exhaust systems in kitchens) that are a possible solution to this drawback.In March of 2002 and January of 2003, we measured air change rates in a 2-bedroom apartment using the PFT technique. This method has the advantage of measuring air renewal rates in inhabited apartments during areasonable period and thereby reveals air renewal rates in the dwelling and also in each compartment.This article will demonstrate the results obtained at a standard apartment and will present the experimental study characterising the hybrid ventilation system in a 100-apartment residential complex in the Porto area. The study evaluates the façade's permeability and the respective air exchange rates per compartment using the PFT and theconstant concentration techniques.
Subject: Engenharia civil, Engenharia civil
Civil engineering, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
Source: 26th AIVC Conference
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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