Fast Modelling of nZEB Metrics of Office Buildings Built with Advanced Glass and BIPV Facade Structures

Abstract

The planning process of nearly Zero Energy Buildings (nZEB), as defined in Energy Performance of Buildings Directive (EPBD), requires that designers check their solutions at all stages of planning. In the initial design phase, methods and tools for which only basic design knowledge of the modelling of energy efficiency indicators is required are often sufficient. With the introduction of fast modelling techniques, designers’ work can be simplified. A method and software for the fast modelling of nZEB energy efficiency indicators of buildings constructed with advanced multi-layer glass and building integrated photovoltaics facade (BIPV) structures are presented. The computer tool for fast modelling combines (i) upgraded national certificated software for energy performance of buildings (EPB) evaluation, which is used for performing auto-repeating numerical calculations based on the design of experiments (DOE) and (ii) software for the determination of multiple linear regression models and the presentation of results. The case studies made for different buildings and climate conditions show the variety of options offered by the developed fast modelling approach. It can be seen that buildings with a large proportion of advanced glassed facade and even all-glass buildings can fulfil nZEB requirements via the on-site production of electricity with BIPV facade structures.

Experimental Study on Energy Efficiency of Multi-Functional BIPV Glazed Façade Structure during Heating Season

“…where all independent variables are daily integrals or average values. The accuracy of the developed multiple linear regression models of solar energy utilization efficiencies was tested with widely used indices [31,32]: the adjusted coefficient of determination R 2 adj , the normalized mean bias error (NMBE) and the coefficient of variation of the root-mean-square error CV(RMSE) which are defined by the following equations:…”

Dynamic parametric models for the holistic evaluation of semi-transparent photovoltaic/thermal façade with latent storage inserts

“…The following values of statistical indicators are requested for hourly regression models: R 2 > 75%, NMBE < ±10% and CV(RMSE) < 30%. Details are presented in [47,48].…”

Estudo da paridade econômica e do desempenho energético de fachadas solares fotovoltaicas no extremo sul do Brasil

“…Ainda sobre a busca por edifícios com baixas necessidades energéticas, Domjan et al (2019) apresentam um método para a modelagem rápida de indicadores de eficiência energética de edifícios construídos com grandes áreas envidraçadas (semelhante ao vidro proposto por Medved et al (2019), apresentado no parágrafo anterior), com múltiplas camadas nas estruturas das fachadas fotovoltaicas integradas (BIPV). De acordo com os resultados obtidos pelos autores, observou-se que edifícios que apresentam grande proporção de fachada envidraçada e até edifícios totalmente envidraçados podem atender aos requisitos nZEB por meio da produção local de eletricidade com a estrutura da fachada BIPV, desde que a composição dessa fachada considere tecnologias construtivas com vidros múltiplos com geração fotovoltaica.…”