CH-24-C107 - Modeling of Energy Fluxes in Fenestration Integrating Luminescent Solar Concentrators

In order to turn buildings into electricity producers, solutions have been proposed to integrate photovoltaics in buildings (BIPV). One way to achieve BIPV is by integrating luminescent solar concentrators (LSC) through windows in buildings. In this work, a model is proposed to simulate a LSC window. Unlike Monte-Carlo models, the approach presented in this paper is based on simple equations and mathematical operations such as integrals and convolutions. The method use generations of re-absorption and re-emission to achieve the total light emitted by the luminophore. Validation with previous approaches was made and energy fluxes were analyzed. In addition to providing the basis to calculate the solar heat gain coefficient (SHGC) and electricity production of LSC windows, results showed that heat generated due to absorption may accelerate the deterioration of dyes; however, less heat is produced at places where luminophores have the highest contribution. Application of the model on Luminogen-Orange showed the distribution of energy fluxes on each optical process with a final electricity generation of 0.6%.