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M. Tomazovic, K. Kiesel, M. Vuckovic, A. Mahdavi:
"Cooling Performance of White Roofs in Residential Buildings";
Talk: 6th International Engineering Conference on Energy-E fficient Buildings, Gaza; 2016-10-25 - 2016-10-26; in: "IEC6 PROCEEDINGS - Proceedings of the 6th International Engineering Conference on Energy-Efficient Buildings", Organizers of the IEC6-2016 / (ed.); Eigenverlad mit wissenschaftlichem Lektorat, Islamic University of Gaza, (2016), Paper ID 2-1, 6 pages.

A multitude of research efforts explore the possibilities for reducing buildings' energy demand. In general, the cooling load of buildings is affected in part by the solar absorptance of roof surfaces. Therefore, new energy-efficient products with higher reflectance for the building envelope can be favorable in view of energy saving potential. In this context, this paper explores the potential for reducing building´s cooling energy demand via application of high solar reflectivity layers applied to the roof surface. For this purpose, three different prefabricated residential buildings in Novi Sad, Serbia, were selected and made subject to systematic thermal
performance simulations. The computed performance indicators were then used to investigate cooling demand and overheating tendencies during summer months. The results show a significant
reduction in computed cooling loads (from 4% to 37%, depending on the envisioned scenario), thus pointing to the thermal benefits of the cool roof system.

(no german version) A multitude of research efforts explore the possibilities for reducing buildings' energy demand. In general, the cooling load of buildings is affected in part by the solar absorptance of roof surfaces. Therefore, new energy-efficient products with higher reflectance for the building envelope can be favorable in view of energy saving potential. In this context, this paper explores the potential for reducing building´s cooling energy demand via application of high solar reflectivity layers applied to the roof surface. For this purpose, three different prefabricated residential buildings in Novi Sad, Serbia, were selected and made subject to systematic thermal
performance simulations. The computed performance indicators were then used to investigate cooling demand and overheating tendencies during summer months. The results show a significant
reduction in computed cooling loads (from 4% to 37%, depending on the envisioned scenario), thus pointing to the thermal benefits of the cool roof system.

Cool roofs, building performance, modelling.

Project Head Ardeshir Mahdavi:
Monitoring and modeling of the urban micro-climate