Design and Simulation of the Solar Optical Guide Lighting and Ventilation System in a Building

Abstract

With the continuous development of society, power consumption for the lighting and the ventilation in buildings accounts for more and more proportion of the total energy supply. With the aim of relieving the conflict between the fast-growing urbanization and power limitation, a solar optical guide lighting and ventilation (SOGLV) system combining natural lighting and natural ventilation is proposed in this study. The simulations are carried out to analyze the performance of optical guiding at different times by Monte Carlo method. Meanwhile, the performance of ventilation is simulated under different absorbed heat fluxes by Fluent. It is found from the research that the SOGLV system can achieve the goal of lighting and ventilation. The average indoor illumination intensity on the ground floor first increases then decreases within a day. The heat flux on the optical guide pipe wall appears in a block pattern. The maximum velocity is linearly correlated with the average absorbed heat flux on the optical guide wall, ranging from 0.90 m/s to 1.02 m/s.