Optimization of coupled building roof solar reflectance and thermal insulation level for annual energy saving under different climate zones

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2017Author
Piselli, Cristina
Pisello, Anna Laura
Cotana, Franco
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Piselli, Cristina;
Pisello, Anna Laura;
Gracia Cuesta, Alvaro de;
Saffari Tabalvandani, Mohammad;
Cotana, Franco;
Cabeza, Luisa F.;
.
(2017)
.
Optimization of coupled building roof solar reflectance and thermal insulation level for annual energy saving under different climate zones.
ISES Conference Proceedings, comunicació presentada al ISES Solar World Congress and the IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry, Abu Dhabi del 29 d'octubre al 2 de novembre de 2017.
International Solar Energy Society.
http://hdl.handle.net/10459.1/64859.
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The aim of this work is to assess building energy performance optimization potential of cool roof solutions in
different climate conditions worldwide through dynamic thermal-energy simulation and optimization analysis.
Moreover, given the dependence of roof performance on insulation level, the influence of roof insulation
variation on optimum roof solar reflectance is evaluated. Therefore, the multi-dimensional optimization of
combined building roof solar reflectance capability and thermal insulation level is carried out to minimize
annual energy consumption for air-conditioning of standard ASHRAE building model for small offices, in each
considered climate zone. Findings of this research highlight how the classic approach of super-insulated
buildings for energy saving needs to be reframed for the office case, by integrating other passive solutions for
truly environmentally friendly and comfortable buildings.