Exergy, exergoeconomic and enviroeconomic analysis of a building-integrated semitransparent photovoltaic/thermal (BiSPV/T) facade

This paper presents study focused on a Building integrated semi-transparent Photovoltaic/Thermal (BiSPV/T) façade with an air channel. It includes a detailed analysis on systems' ability to exploit solar energy effectively. System performance has been evaluated based on its obtained energy, exergy and exergoeconomic parameters using a numerical model for the climate of Srinagar, India. The novelty of this study lies in its comprehensive approach to evaluate a facade-based semi-transparent BIPVT system by incorporating all prevalent weather conditions within a single month. This includes clear, hazy, hazy-cloudy, and cloudy days, ensuring a holistic and realistic assessment of system performance under varying atmospheric scenarios. Results showed that annually 366.23 kWh/m2 of thermal energy and 122.36 kWh/m2 exergy has been obtained from the present BiSPVT system. However, for the given variation of meteorological conditions, the system experienced an annual energy (Len) and exergy loss rate (Lex) of 425.64 kWh/m2 and 617.74 kWh/m2 resulting in a corresponding energy (Ren) and exergy loss rate ratio (Rex) of 0.0077 kWh/$ and 0.00069 kwh/$ respectively. Furthermore, the proposed system has been able to reduce the annual CO2 emission by 2.81 tonnes leading to 40.87 $/annum environmental cost reduction.HIGHLIGHTSThe BiSPVT façade-based system is designed for a building under the climatic conditions of Srinagar, India.Numerical simulation is carried out using MATLAB software to assess systems' exergy, exergoeconomic and enviroeconomic performance.Annually, useful exergy from the system amounts to 122.36 kWh/m2.Energy and exergy loss rate parameters analyses exhibit their correlation with incident solar radiation.Enviroeconomic parameters are relatively lower for the BiSPVT façade system.Net present value (NPV) of the system is estimated considering a lifetime of 30years.