Fulin Wang, Zheliang Chen, Chen Chen, Yansheng Liu
Year:
2015
Bibliographic info:
Building Simulation, 2015, Hyderabad, India

Natural ventilation is considered an energy efficient measure that can utilize outdoor cool air to achieve free cooling but needs not consume any fan energy. For studying the energy saving potentials of natural ventilation in factory building with design scheme, the building annual energy consumption simulation software DeST Vent+ was used to simulate the cooling load saving potential and fresh outdoor air flow rates of different area of window opening and ventilation shaft to decide the optimal design of opening area. Then the computational fluid dynamics (CFD) software Fluent Airpak was used to verify the air temperature and speed distributions of the optimal design scheme. Simulation results show that with different window areas the natural ventilation can reduce annual cooling consumptions by 10%-60%. The CFD simulation shows that temperature and air speed distributions with stack ventilation are acceptable with maximum temperature difference around 2°C and maximum air speed less than 0.5 m/s.