Tuesday, November 23, 2021
Saturday, October 2, 2021
4th International Conference on Countermeasures to Urban Heat Island (UHI) 2016
Life Cycle Analysis of Cool Roof in Tropical Areas
Zhijun Zhang a,b, Shanshan Tongc*, Haibo Yua
a Tianjin Institute of Surveying and Mapping, Changling Road, Tianjin 300381, China
b School of Resources and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
c National University of Singapore, 4 Architecture Drive, Singapore 117566, Singapore
In this work, the Complex Fast Fourier Transform (CFFT) method is introduced to predict the roof temperature and heat gain in the tropical country of Singapore. The cost-effectiveness of cool paint and roof ventilation are evaluated through life-cycle analysis.
Cool paint and roof ventilation can provide annual cooling energy savings of 33-57 USD/m2 for the top-floor residential units. The payback period of cool paint is shorter than 2 months in unventilated roof and shorter than 6 months in ventilated roof. Both cool paint and roof ventilation are very energy-efficient and cost-effective in tropical climate.