Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heat Transfer Analysis of Recycled versus Conventional Green Roof Media
The water quality and quantity benefits of green roofs have been well documented. However, the transfer of the sun’s heat through the roof to the building envelope has not been as well studied. This project addresses the knowledge deficit by testing thermal flux between the surface and the bottom of the green roof media operated under simulated winter and summer conditions and under saturated and dry conditions. Initial studies evaluated replacing expanded shale with crumb rubber. The results showed that when the surface was approximately 65 C, the temperature against the building envelope were 29 C for crumb rubber and 39 C for conventional media. Under saturated conditions, the initial measurements showed that crumb rubber still transfers less heat to the roof compare to the conventional material. Rubber also retained water longer, which kept the heat away from the roof due to slow evaporation of water. This translates to a considerable amount of energy saving in urban areas by using recycled tires as green roof materials. Further research will investigate other components of green roof media and the impact of vegetation on heat transfer, with the goal of improving existing models of building roof performance when a green roof is added.
Heat Transfer Analysis of Recycled versus Conventional Green Roof Media
The water quality and quantity benefits of green roofs have been well documented. However, the transfer of the sun’s heat through the roof to the building envelope has not been as well studied. This project addresses the knowledge deficit by testing thermal flux between the surface and the bottom of the green roof media operated under simulated winter and summer conditions and under saturated and dry conditions. Initial studies evaluated replacing expanded shale with crumb rubber. The results showed that when the surface was approximately 65 C, the temperature against the building envelope were 29 C for crumb rubber and 39 C for conventional media. Under saturated conditions, the initial measurements showed that crumb rubber still transfers less heat to the roof compare to the conventional material. Rubber also retained water longer, which kept the heat away from the roof due to slow evaporation of water. This translates to a considerable amount of energy saving in urban areas by using recycled tires as green roof materials. Further research will investigate other components of green roof media and the impact of vegetation on heat transfer, with the goal of improving existing models of building roof performance when a green roof is added.
Heat Transfer Analysis of Recycled versus Conventional Green Roof Media
Kaveh, Rashid (Autor:in) / Clark, Shirley E. (Autor:in)
World Environmental and Water Resources Congress 2019 ; 2019 ; Pittsburgh, Pennsylvania
16.05.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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