Analysis on energy saving techniques for retrofitting an open large space building in hot summer and warm winter zone

To study the applicable measures of energy saving retrofitting for this kind of buildings, with an actual project as example, analyses qualitatively the energy saving effect of natural ventilation, displacement ventilation, shading and roof sprinkling by Fluent software, and analyses the annual energy consumption by DeST software. Presents the simulated distribution of temperature and velocity, and the tested temperature and relative humidity on the condition of natural ventilation combined with air conditioning. Concludes that natural ventilation, displacement ventilation, shading and roof sprinkling can improve the indoor environment and reduce the energy consumption distinctly; the sloping auditorium and sunk arena contributes to improving indoor displacement ventilation effect; the energy consumption can be decreased by 61.9 percent by passive energy saving technique.