The impact of building-integrated photovoltaics on the energy demand of multi-family dwellings in Brazil
Ordenes, M., Marinoski, D. L., Braun, P. and R¨¹ther, R.
2007 Energy and Buildings, 39(6): 629-642
Ordenes, M., Marinoski, D. L., Braun, P. and R¨¹ther, R., (2007), "The impact of building-integrated photovoltaics on the energy demand of multi-family dwellings in Brazil", Energy and Buildings, 39(6): 629-642 .
Abstract:
Brazil faces a continuous increase of energy demand and a decrease of available resources to expand the generation system. Residential buildings are responsible for 23% of the national electricity demand. Thus, it is necessary to search for new energy sources to both diversify and complement the energy mix. Building-integrated photovoltaic (BIPV) is building momentum worldwide and can be an interesting alternative for Brazil due its solar radiation characteristics. This work analyses the potential of seven BIPV technologies implemented in a residential prototype simulated in three different cities in Brazil (Natal, Bras¨ªlia and Florian¨®polis). Simulations were performed using the software tool EnergyPlus to integrate PV power supply with building energy demand (domestic equipment and HVAC systems). The building model is a typical low-cost residential building for middle-class families, as massively constructed all over the country. Architectural input and heat gain schedules are defined from statistical data (Instituto Brasileiro de Geografia e Estat¨ªstica¡ªBrazilian Institute for Geography and Statistics (IBGE) and Sistema de Informa??es de Posses de Eletrodom¨¦sticos e H¨¢bitos de Consumo¡ªConsumer Habits and Appliance Ownership Information System (SIMPHA)). BIPV is considered in all opaque surfaces of the envelope. Results present an interesting potential for decentralized PV power supply even for vertical surfaces at low-latitude sites. In each fa?ade, BIPV power supply can be directly linked to local climatic conditions. In general, for 30% of the year photovoltaic systems generate more energy than building demand, i.e., during this period it could be supplying the energy excess to the public electricity grid. Contrary to the common belief that vertical integration of PV is only suitable for high latitude countries, we show that there is a considerable amount of energy to be harvested from vertical fa?ades at the sites investigated.
This publication in whole or part might be found online. Check the sources on the related article below. Or use search engines on the web.