Modelação da Variação da Humidade Relativa no Interior dos Edifícios

• Type: Article in International Conference Proceedings Book
• Date: 2001

Authors

Nuno Manuel Monteiro Ramos (Author) FEUP; Vasco Manuel Araújo Peixoto de Freitas (Author) FEUP

Conference proceedings National

Title: Construção 2001 - Congresso Nacional da Construção

Pages: 1145-1152

Construção 2001 - Congresso Nacional da Construção

Lisboa, 17 a 19 de Dezembro de 2001

Scientific classification

FOS: Engineering and technology > Civil engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Infrastructures engineering

Other information

Resumo (PT): Nesta comunicação apresenta-se um trabalho ainda em desenvolvimento cujo objectivo consiste na modelação da variação da humidade relativa no interior dos edifícios tendo em conta a ¿inércia higroscópica¿. Apresenta-se um modelo matemático e o programa de cálculo que o utiliza, bem como alguns resultados já obtidos.

Abstract (EN): Moisture is one of the main causes for building degradation. Therefore, the development of models that allow the definition of qualitative and quantitative rules for the design of building components, and the building itself as a whole is a task of great importance. A mathematical model of relative humidity variation was conceived, based on composition of interior surfaces, ventilation rate, vapour production and outside climate. The calculation theory for hygroscopic materiais contribution to the humidity balance is the main difference to other existing models. The elaboration of the computer program RH2000, resulted on a tool for numerical simulation of the relative humidity variation inside a room, based on that model. This program was built for use on a personal computer using Windows operating system. Several simulations were made to evaluate the influence of the model's parameters in the process of relative humidity variation. It was given special attention to the analysis of the effect of the presence of hygroscopic surfaces in rooms showing different hygrothermal conditions. The results of that study demonstrated the significant role played by the hygroscopic inertia on controlling inside relative humidity variation.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 8