Fig. 7: Comparison in a typical day of summer, spring / autumn and winter between hourly energy demand( red) and supply( blue) with different integrated solar systems in a roof’ s house.
Multi-family residential buildings have more limited roof capacity, so individual thermal energy equipment was preferred that could be integrated into the hot water supply system and offer more rapid investment returns with minimal visual impact( Fig. 8 – right). However, these roof-installed systems often suffer from inadequate maintenance care and are not really perceived by users. The possibility of integrating solar capture systems into building facades is variable by solar orientation, shape and material conditions, but there is capability for incorporating lightweight photovoltaic panels. According initial surveys, this technology could be particularly relevant in low-income sectors located on the peripheries of cities, where residents would most appreciate the reduction in electricity costs and come to value alteration of building expressions by technological innovation and environmental awareness. However, residents would require collective financial and technical support to implement such installations.
Fig. 8. Test-bed of domestic solar technologies( left) and example of multi-family building with thermal panels( right).
In order to evaluate installation and performance of different domestic technologies for solar energy collection and production, a test-bed has been implemented in a roof of university building connected to storage tanks and batteries with a central monitoring station( Fig. 8- left). Initial results demonstrate efficiency close to literature and technical standards, even in cloudy days.
Besides, to provide examples of the possibilities offered by integrated solar energy capture with good environmental performance in mass housing, one model was selected from the recent real-estate developments that had both a functional layout and suitable passive strategies; although a partial change was necessary in the roof design. A dynamic simulation was carried out to determine comfort within the home using typical construction materials and weather conditions of the zone. Integrated thermal and photovoltaic roof collection panels were modelled
600 ZEMCH 2015 | International Conference | Bari- Lecce, Italy