A carregar...
Publicação
Assessment of an Enhanced Passive Ventilation System in a Changing Climate
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 5.13 MB | Adobe PDF |
Autores
Orientador(es)
Resumo(s)
Global warming will have severe consequences in the building sector, increasing energy demand and
exposing more people to potential health consequences caused by lack of appropriate indoor conditions.
Consequently, the necessity to implement adequate building design practices and prepare for climate
change is evident. This thesis assesses the performance of an enhanced cross-ventilation system which
incorporates a chimney. This is done in a selected case study originally designed for the southern
European climate. Its performance is compared to a traditional single side ventilation configuration
(SSV), across different levels of urban surroundings, and the current and future climates of seven
locations.
The results indicate the chimney system (CV-1H) exhibits superior airflow performance compared to
the single side system (SSV) with the same opening areas. When subjected to similar conditions, the
CV-1H configuration can achieve up to nine times greater airflow, and this increase is even more
pronounced – up to 20 times – in urban environments shielded by tall buildings. Moreover, the height
of the chimney in CV-1H systems can be increased (CV-2H) to enhance airflow by an additional 20%.
In the seven locations studied, an average increase in outdoor air temperature of 2°C by 2050 and 4°C
by 2090 is expected. The developed chimney system effectively counteracts the rise in temperature by
harnessing wind-driven ventilation potential, which is notably beneficial in hotter climates such as
Dakar and Saint-Denis, where it reduces mechanical cooling needs by approximately 20%. Additionally,
the chimney system results in substantial energy savings, on average three times greater than those
observed with single side configurations.
Descrição
Tese de mestrado, Engenharia da Energia e Ambiente, 2025, Universidade de Lisboa, Faculdade de Ciências
Palavras-chave
Ventilação Natural Aquecimento Global Conservação de Energia Simulação Dinâmica Computacional EnergyPlus Teses de mestrado - 2025