Paper Conference

Proceedings of ASim Conference 2014: 2nd Asia conference of IBPSA-China, Japan, Korea


Optimum Shading Design in Building Integrated Photovoltaic Overhang

Sumit Sharma, Mayuri Rajput, Sanjay Mathur, Jyotirmay Mathur

Abstract: The study analyses the performance of thin film Building Integrated Photo Voltaic (BIPV) overhang with different projection factors and orientation and its corresponding effect on PV energy yield, indoor day lighting and air conditioning energy requirements in a modeled building which is compliant to Energy Conservation Building Code (ECBC) and located in warm and humid climatic zone (Chennai). The PV overhang is mounted over the South wall window with 27% window to wall ratio (WWR) and installed such that the watts/m² remains constant in all the considered cases. The total conditioned area of the zone under consideration is 41.04 m² The building model is simulated using EnergyPlus software for a total of ten cases, with five cases having horizontal orientation and varying projection factors (No overhang, Projection Factors-0.25, 0.5, 0.75 and 1) while the other five have inclined orientation equal to latitude of the location and with similar projection factors as above. Simulation results are summarized as annual, monthly and hourly graphs. The annual graphs show the load breakup of the building for different projection factors and help to identify the general trends in variation in cooling and lighting energy consumption.
Keywords: BIPV, Semi-transparent photovoltaic window, Building simulation, solar heat gain coefficient.
Pages: 475 - 482