Thermal Performance of Setcreacea purpurea and Portulaca grandifora as a Green Roof Material Applied in a Tropical Climate

Green roofs are generally applied to concrete roofed buildings. This study compares the thermal performance of green roofs that occur in corrugated concrete and zinc to expand green roof innovation. The study experimented on a method using the 2011 Ecotect computer simulation. The results showed that the difference in temperature reduction in corrugated zinc was higher than in concrete. Changes in heat outside the roof space on both have a number that has a relatively small difference, but the difference in heat is visible in the inner space. Based on the thermal performance of the roof, the use of corrugated zinc roofs as the base of the green roof in the building could be an alternative green roof material besides concrete.

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THE GREEN ROOF THERMAL PERFORMANCE EVALUATION IN COMPARISON TO ASBESTOS CEMENT TILES APPLIED TO LIGHT STEEL FRAME BRAZILIAN BUILDINGS

International Journal of Architectural Research Archnet-IJAR ◽

10.26687/archnet-ijar.v12i3.1709 ◽

2018 ◽

Vol 12 (3) ◽

pp. 288

Author(s):

Angélica Felicidade Guião Marcato Costa ◽

João Alexandre Paschoalin Filho ◽

Tatiana Tucunduva Philipi Cortese ◽

Brenda Chaves Coelho Leite

Keyword(s):

Performance Evaluation ◽

Relative Humidity ◽

Heat Flow ◽

Thermal Performance ◽

Green Roof ◽

Steel Frame ◽

Internal Temperature ◽

Green Cover ◽

Asbestos Cement ◽

Data Representative

This research aimed at comparing the thermal performance provided in experimental modules, one of which was performed with conventional cover, made of asbestos cement tiles; an another with green cover. The structure of the studied modules was executed using Light Steel Frame technique. As an experimental research, modules were built in a wide place, without the interference of shading. Instruments were installed in the inner part of the modules to measure the following data: air temperature, relative humidity. From the collected data, representative episodes have been chosen for the studies that aimed to compare the comfort provided by both modules, built with different roofs. As result, it was verified that the module with green roof had better performance than the module covered with asbestos cement tile in all selected episodes. The module covered with green roof maintained lower internal temperature variation throughout the days, indicating that the green roof has characteristic thermal insulation, reducing the heat flow from the roof.

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The impact of wall and roof material on the summer thermal performance of building in a temperate climate

Energy ◽

10.1016/j.energy.2021.120482 ◽

2021 ◽

pp. 120482

Author(s):

Anna Staszczuk ◽

Tadeusz Kuczyński

Keyword(s):

Thermal Performance ◽

Temperate Climate ◽

Roof Material ◽

The Impact

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Snow depth and vegetation type affect green roof thermal performance in winter

Energy and Buildings ◽

10.1016/j.enbuild.2014.07.093 ◽

2014 ◽

Vol 84 ◽

pp. 299-307 ◽

Cited By ~ 22

Author(s):

Jeremy T. Lundholm ◽

Brett M. Weddle ◽

J. Scott MacIvor

Keyword(s):

Thermal Performance ◽

Snow Depth ◽

Vegetation Type ◽

Green Roof

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A modelling study of the event-based retention performance of green roof under the hot-humid tropical climate in Kuching

Water Science & Technology ◽

10.2166/wst.2017.472 ◽

2017 ◽

Vol 76 (11) ◽

pp. 2988-2999 ◽

Cited By ~ 2

Author(s):

C. T. Chai ◽

F. J. Putuhena ◽

O. S. Selaman

Keyword(s):

Flash Flood ◽

Retention Rate ◽

Meteorological Data ◽

Green Roof ◽

Tropical Climate ◽

Climatic Conditions ◽

Retention Performance ◽

Strong Negative Correlation ◽

Rainfall Depth ◽

Event Based

Abstract The influences of climate on the retention capability of green roof have been widely discussed in existing literature. However, knowledge on how the retention capability of green roof is affected by the tropical climate is limited. This paper highlights the retention performance of the green roof situated in Kuching under hot-humid tropical climatic conditions. Using the green roof water balance modelling approach, this study simulated the hourly runoff generated from a virtual green roof from November 2012 to October 2013 based on past meteorological data. The result showed that the overall retention performance was satisfactory with a mean retention rate of 72.5% from 380 analysed rainfall events but reduced to 12.0% only for the events that potentially trigger the occurrence of flash flood. By performing the Spearman rank's correlation analysis, it was found that the rainfall depth and mean rainfall intensity, individually, had a strong negative correlation with event retention rate, suggesting that the retention rate increases with decreased rainfall depth. The expected direct relationship between retention rate and antecedent dry weather period was found to be event size dependent.

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