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Comparative Thermal Performances of Different Envelope Roof Designs for Sustainable Solar Cooling

Osamuyi Obadolagbonyi*, Ben Oni**, Mandoye Ndoye***

*,*** Tuskegee University, Tuskegee, Alabama.

** Department of Electrical and Computer Engineering, Tuskegee University, Tuskegee, Alabama.

Periodicity:December - February'2020
DOI : https://doi.org/10.26634/jce.10.1.16829

Abstract

Countries in the world's hot climatic areas have an abundance of sunshine. While the heat component of solar radiation, along with humidity produces ambient discomfort, its visible light component has great potential for cooling applications in building interior thermal comfort. In this study, the traditional building practice in Sub-Saharan Africa (SSA) has been reviewed. Novel heat flow reduction strategies were investigated with the goal of identifying the best roof design that will minimize heat transmission from roof to building interior and thus make solar cooling more economically-feasible. Scaled-down structures of roof envelopes were constructed using the typical SSA metallic roofing materials. The single roof construction that is traditionally implemented in SSA was replicated for reference. Double roof constructions with different configurations were also constructed for comparison with the typical SSA single roof construction. When compared to the reference “traditional single roof”, the “single roof with radiant heat reflector underneath” configuration with 3.5” (8.89cm) air space separation, lowered the attic peak temperature by 12.26 degree F, and reduced the 24-hr stored interior thermal energy by 66%.

Keywords

Building Roof Envelope, Solar Energy Cooling, Radiant Heat Reduction, Thermal Comfort.

How to Cite this Article?

Obadolagbonyi, O., Oni, B., & Ndoye, M. (2020). Comparative Thermal Performances of Different Envelope Roof Designs for Sustainable Solar Cooling, i-manager's Journal on Civil Engineering, 10(1), 1-12. https://doi.org/10.26634/jce.10.1.16829

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Comparative Thermal Performances of Different Envelope Roof Designs for Sustainable Solar Cooling

Abstract

Keywords

How to Cite this Article?

References

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