Dynamic Simulation Of Atrium Thermal Environment

As a large building space, atrium is becoming a popular common space in various public buildings because of its high quality of indoor air, environment and its extraordinary value as a communication center. However, such characteristics as opening, large volume and introducing of natural source make it is more difficult than in normal building space to design, organize and control the thermal environment in atrium. It is usual difficult to meet requirement of thermal comfort and operate efficiently in atrium. To improve the level of design so as to ensure thermal comfort with lower energy consumption, it is necessary and important to predict atrium thermal environment correctly. Many literatures have discussed the prediction and simulation method of atrium thermal environment. While, there is no literature provide integrate arithmetic for dynamic distributive simulation of atrium thermal environment fitting for engineering requirements.The goal of this research is to develop suitable simulation tool for dynamic distributive simulation of atrium thermal environment. The development is based on the dynamic simulation tool DeST. DeST is suitable for simulation of those buildings that are composed of normal building spaces. This research imports the zonal model into DeST as the space model of atrium coordinating with the lumped model for normal building space. To accommodate the zonal model to the dynamic simulation, this research develops the model calculating airflow rate between zones and the model calculating thermal response coefficients of an atrium with many zones. The latter simulates the thermal disturbance in each zone and heat exchange by long-wave radiation between surfaces of different zones.The achievement of this paper is to make dynamic distributive simulation of atrium thermal environment realized. It is attainable to do simulation of atrium with adjacent rooms and HVA&C system for whole year by one hour time step based on this research. DeST is now an extended simulation tool that can be applied to different building space by using different space model. Then, this research provides an analysis tool for dynamic distributive simulation of atrium thermal environment fitting for engineering requirements.