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Publicação
A UTILIZAÇÃO DE PAREDES VERDES NA REABILITAÇÃO
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Resumo(s)
Dada a degradação do parque urbano, torna-se cada vez mais evidente a necessidade de
reabilitação dos edifícios existentes. Esta medida deve ser prioritária face à nova construção. No
entanto, Portugal continua a ter das taxas de reabilitação mais baixas da União Europeia. A utilização
de paredes verdes na reabilitação poderá ser uma mais valia para o tecido urbano, uma vez que este
tipo de solução construtiva permite uma construção mais equilibrada e sustentável.
A implementação das paredes verdes em edifícios é usualmente associada a aspetos
arquitetónicos e estéticos. Contudo, várias outras vantagens podem ser associadas a este tipo de
solução construtiva, como por exemplo ao nível do efeito da Ilha de Calor Urbano ou ao nível de
poluentes presentes na atmosfera. Também é relevante estudar de que forma este tipo de soluções
afeta o comportamento térmico de um edifício.
Foi realizada uma simulação de um modelo, com recurso ao software ENVI-met, com
vegetação integrada nas suas fachadas. Pretendeu-se retirar conclusões sobre as influências da
orientação e de percentagem de cobertura da fachada, no clima português. Além disso, pretendeu-se
verificar, se este tipo de solução construtiva, apresenta resultados semelhantes, noutros climas, e se
faz sentido aplicar este conceito a edifícios, sob o clima português. Os resultados demonstraram um
impacto significativo no comportamento térmico em função da presença da parede verde, tanto no
período de verão como no período de inverno, havendo um maior impacto no período de verão.
Este trabalho pretende abrir horizontes a nível construtivo e reafirmar a necessidade de
construir de forma controlada e com materiais mais sustentáveis.
Given the degradation of the urban park, the need to rehabilitate existing buildings is becoming increasingly evident. This measure should be given priority over new construction. However, Portugal still has one of the lowest rates of rehabilitation in the European Union. The use of green walls in rehabilitation may be an added value for the urban fabric, since this type of construction solution allows a more balanced and sustainable construction. The implementation of green walls in buildings is usually associated with architectural and aesthetic aspects. However, several other advantages can be associated with this type of constructive solution, such as the Urban Heat Island effect or the level of pollutants in the atmosphere. It is also relevant to study how this type of solution affects the thermal behavior of a building. A simulation of a model, using ENVI-met software, with vegetation integrated in its facades was carried out. It was intended to draw conclusions about the influences of orientation and percentage of coverage of the facade, in the portuguese climate. Furthermore, it was intended to verify if this type of constructive solution presents similar results in other climates, and if it makes sense to apply this concept to buildings under the portuguese climate. The results showed a significant impact on the thermal behavior as a function of the presence of the green wall, both in the summer and winter periods, with a greater impact in the summer period. This work intends to open horizons at the construction level and, step by step, reaffirm the need to build in a controlled manner and with more sustainable materials.
Given the degradation of the urban park, the need to rehabilitate existing buildings is becoming increasingly evident. This measure should be given priority over new construction. However, Portugal still has one of the lowest rates of rehabilitation in the European Union. The use of green walls in rehabilitation may be an added value for the urban fabric, since this type of construction solution allows a more balanced and sustainable construction. The implementation of green walls in buildings is usually associated with architectural and aesthetic aspects. However, several other advantages can be associated with this type of constructive solution, such as the Urban Heat Island effect or the level of pollutants in the atmosphere. It is also relevant to study how this type of solution affects the thermal behavior of a building. A simulation of a model, using ENVI-met software, with vegetation integrated in its facades was carried out. It was intended to draw conclusions about the influences of orientation and percentage of coverage of the facade, in the portuguese climate. Furthermore, it was intended to verify if this type of constructive solution presents similar results in other climates, and if it makes sense to apply this concept to buildings under the portuguese climate. The results showed a significant impact on the thermal behavior as a function of the presence of the green wall, both in the summer and winter periods, with a greater impact in the summer period. This work intends to open horizons at the construction level and, step by step, reaffirm the need to build in a controlled manner and with more sustainable materials.
Descrição
Palavras-chave
Reabilitação Urbana Paredes Verdes Paredes Vivas ENVI-met