A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The Influence of Extensive Green Roofs on Roof Thermal Performance in Batu Pahat Climate
Abstract Climate change has increased global temperatures. When air temperature rises, it affects the condition of urban areas and creates discomfort among inhabitants of buildings. A potential sustainable approach to overcome the global warming issue is to implement green roof technology. This study aims to determine the effect of green roofs on roof thermal performance and to identify the best plant species which has the potential to lower temperatures. This study also determined the U-value, R-value, k-value and heat-flux parameters that constitute the thermal behaviour of green roofs. Three identical small-scale roof houses were constructed with one non-vegetated roof house as a control while the other two vegetated roof houses were planted with Portulaca G. and Alternanthera P., respectively. Surface roof temperatures were collected from both inside and outside the roof of each house. Results show that the average differences in temperature inside the building between the control roof and the green roof were 0.02 °C and 0.22 °C for Portulaca G. and Alternanthera P., respectively. Meanwhile, the average differences in temperature on the control roof and the green roof were 1.12 °C and 2.84 °C for Portulaca G. and Alternanthera P., respectively. The heat flux value of Alternanthera P. roof is 3.15 w/m2 better than Portulaca G. roof at 7.72 w/m2. This concludes that the roof with Alternanthera P. reduces heat that travels through the roof layer better than Portulaca G.
The Influence of Extensive Green Roofs on Roof Thermal Performance in Batu Pahat Climate
Abstract Climate change has increased global temperatures. When air temperature rises, it affects the condition of urban areas and creates discomfort among inhabitants of buildings. A potential sustainable approach to overcome the global warming issue is to implement green roof technology. This study aims to determine the effect of green roofs on roof thermal performance and to identify the best plant species which has the potential to lower temperatures. This study also determined the U-value, R-value, k-value and heat-flux parameters that constitute the thermal behaviour of green roofs. Three identical small-scale roof houses were constructed with one non-vegetated roof house as a control while the other two vegetated roof houses were planted with Portulaca G. and Alternanthera P., respectively. Surface roof temperatures were collected from both inside and outside the roof of each house. Results show that the average differences in temperature inside the building between the control roof and the green roof were 0.02 °C and 0.22 °C for Portulaca G. and Alternanthera P., respectively. Meanwhile, the average differences in temperature on the control roof and the green roof were 1.12 °C and 2.84 °C for Portulaca G. and Alternanthera P., respectively. The heat flux value of Alternanthera P. roof is 3.15 w/m2 better than Portulaca G. roof at 7.72 w/m2. This concludes that the roof with Alternanthera P. reduces heat that travels through the roof layer better than Portulaca G.
The Influence of Extensive Green Roofs on Roof Thermal Performance in Batu Pahat Climate
Yacob, Mohd Norfekry Md. (author) / Kasmin, Hartini (author) / Kori, Mohd. Khairul Adam Mohd. (author) / Mohamed, Wan Afnizan Wan (author) / Rahmat, Siti Nazahiyah (author) / Adnan, Mohd. Shalahuddin (author)
2019-11-29
11 pages
Article/Chapter (Book)
Electronic Resource
English
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