scholarly journals Performance Analysis of Cool Roof, Green Roof and Thermal Insulation on a Concrete Flat Roof in Tropical Climate

Evergreen ◽  
2015 ◽  
Vol 2 (2) ◽  
pp. 34-43 ◽  
Author(s):  
Kishor T. Zingre ◽  
Xingguo Yang ◽  
Man Pun Wan
Keyword(s):  
Performance Analysis ◽  
Thermal Insulation ◽  
Green Roof ◽  
Tropical Climate ◽  
Cool Roof ◽  
Flat Roof

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

2017 ◽  
Vol 76 (11) ◽  
pp. 2988-2999 ◽  
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.

scholarly journals Cool Roof Impact on Building Energy Need: The Role of Thermal Insulation with Varying Climate Conditions

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3354 ◽  
Author(s):  
Piselli ◽  
Pisello ◽  
Saffari ◽  
Gracia ◽  
Cotana ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Thermal Energy ◽  
Building Energy ◽  
Energy Performance ◽  
Cold Climate ◽  
Climate Conditions ◽  
Building Energy Performance ◽  
Cool Roof ◽  
Solar Reflectance

Cool roof effectiveness in improving building thermal-energy performance is affected by different variables. In particular, roof insulation level and climate conditions are key parameters influencing cool roofs benefits and whole building energy performance. This work aims at assessing the role of cool roof in the optimum roof configuration, i.e., combination of solar reflectance capability and thermal insulation level, in terms of building energy performance in different climate conditions worldwide. To this aim, coupled dynamic thermal-energy simulation and optimization analysis is carried out. In detail, multi-dimensional optimization of combined building roof thermal insulation and solar reflectance is developed to minimize building annual energy consumption for heating–cooling. Results highlight how a high reflectance roof minimizes annual energy need for a small standard office building in the majority of considered climates. Moreover, building energy performance is more sensitive to roof solar reflectance than thermal insulation level, except for the coldest conditions. Therefore, for the selected building, the optimum roof typology presents high solar reflectance capability (0.8) and no/low insulation level (0.00–0.03 m), except for extremely hot or cold climate zones. Accordingly, this research shows how the classic approach of super-insulated buildings should be reframed for the office case toward truly environmentally friendly buildings.

scholarly journals Time-lag Analysis of Potential Waste Materials as Thermal Insulation in Tropical Climate: A Preliminary Investigation

2020 ◽  
Vol 498 ◽  
pp. 012100
Author(s):  
Dg Normaswanna Tawasil ◽  
Eeydzah Aminudin ◽  
Hasanah Abdul Shukor Lim ◽  
Rozana Zakaria ◽  
Hamdan bin Ahmad ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Preliminary Investigation ◽  
Time Lag ◽  
Tropical Climate ◽  
Waste Materials

Thermal and energy performance of green roof and cool roof: A comparison study in Shanghai area

2020 ◽  
Vol 267 ◽  
pp. 122205 ◽  
Author(s):  
Yang He ◽  
Hang Yu ◽  
Akihito Ozaki ◽  
Nannan Dong
Keyword(s):  
Green Roof ◽  
Energy Performance ◽  
Comparison Study ◽  
Cool Roof

Performance analysis of double slope wick-type solar still with varying thermal insulation beneath the wick surface

2013 ◽  
Vol 51 (10-12) ◽  
pp. 2076-2086 ◽  
Author(s):  
R. Rajanarthini ◽  
K. Shanmugasundaram ◽  
B. Janarthanan
Keyword(s):  
Performance Analysis ◽  
Thermal Insulation ◽  
Solar Still

Thermal insulation performance analysis of nanoporous thermal insulating materials applied in torpedo ladle

2014 ◽  
Vol 18 (sup2) ◽  
pp. S2-250-S2-254
Author(s):  
S. W. Liu ◽  
J. K. Yu ◽  
L. Han ◽  
Z. Q. Li ◽  
Z. G. Yan
Keyword(s):  
Performance Analysis ◽  
Thermal Insulation ◽  
Insulating Materials ◽  
Thermal Insulating ◽  
Insulation Performance

scholarly journals Green Roof Concepts as a Passive Cooling Approach in Tropical Climate- An Overview

2014 ◽  
Vol 3 ◽  
pp. 01028 ◽  
Author(s):  
Noorazlina Kamarulzaman ◽  
Siti Zubaidah Hashim ◽  
Hasnan Hashim ◽  
Alia Abdullah Saleh
Keyword(s):  
Green Roof ◽  
Tropical Climate ◽  
Passive Cooling

An overview of plant species and substrate materials or green roof system in tropical climate urban environment

2018 ◽  
Author(s):  
M. F. Chow ◽  
M. F. Abu Bakar ◽  
J. K. Wong
Keyword(s):  
Urban Environment ◽  
Plant Species ◽  
Green Roof ◽  
Tropical Climate ◽  
Roof System
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