Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaporation from Porous Building Materials and Its Cooling Potential
Evaporative cooling is a traditional strategy to improve summer comfort, which has gained renewed relevance in the context of the transition to a greener economy. Here, the potential for evaporative cooling of common porous building materials, like natural stone and ceramic brick, is evaluated. The work has relevance also to the protection of built heritage because evaporation underlies the problems of dampness and salt crystallization, which are so harmful and frequent in this heritage. It was observed that the drying rate of the materials is, in some cases, higher than the evaporation rate of a free water surface. Surface area measurements by a three-dimensional optical technique suggested, as probable cause of this behavior, that surface irregularity gives rise to a large effective surface of evaporation in the material. Surface temperature measurements by infrared were performed afterward during evaporation experiments outside during a hot summer day in Lisbon. Their results indicate that ordinary building materials can be very efficient evaporative media and, thus, may help in achieving higher energy efficiency while maintaining a simultaneous constructive or architectural function.
Evaporation from Porous Building Materials and Its Cooling Potential
Evaporative cooling is a traditional strategy to improve summer comfort, which has gained renewed relevance in the context of the transition to a greener economy. Here, the potential for evaporative cooling of common porous building materials, like natural stone and ceramic brick, is evaluated. The work has relevance also to the protection of built heritage because evaporation underlies the problems of dampness and salt crystallization, which are so harmful and frequent in this heritage. It was observed that the drying rate of the materials is, in some cases, higher than the evaporation rate of a free water surface. Surface area measurements by a three-dimensional optical technique suggested, as probable cause of this behavior, that surface irregularity gives rise to a large effective surface of evaporation in the material. Surface temperature measurements by infrared were performed afterward during evaporation experiments outside during a hot summer day in Lisbon. Their results indicate that ordinary building materials can be very efficient evaporative media and, thus, may help in achieving higher energy efficiency while maintaining a simultaneous constructive or architectural function.
Evaporation from Porous Building Materials and Its Cooling Potential
Gonçalves, Teresa Diaz (Autor:in) / Brito, Vânia (Autor:in) / Vidigal, Filipa (Autor:in) / Matias, Luís (Autor:in) / Faria, Paulina (Autor:in)
01.10.2014
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Evaporation from Porous Building Materials and Its Cooling Potential
| Online Contents | 2015
Evaporation from Porous Building Materials and Its Cooling Potential
| British Library Online Contents | 2015
Salt influence on evaporation from porous building rocks
| British Library Online Contents | 2003
Salt influence on evaporation from porous building rocks
| British Library Online Contents | 2003
Salt influence on evaporation from porous building rocks
| Online Contents | 2003