大空间辐射采暖的数值模拟——以沈阳体育学院排球馆为例

Numerical Simulation of Radiation Heating in Large-Space——Taking the Volleyball Hall of Shenyang Sport University as the Example

目的分析燃气辐射采暖系统在高大空间建筑中的应用效果.方法使用Airpak2.1软件,选用DO辐射模型,k-ε模型,对某高大空间的辐射采暖系统的应用效果进行模拟研究.结果得到了地面、空间温度场分布,并对其进行了相应的分析,靠近南窗的一个温度分布断面,窗户的传热系数要大于围护结构的传热系数,室外冷空气会渗透窗户的缝隙进入室内.结论采暖空间的温度在18℃左右,地面温度比室内空气温度略高,空间内温度梯度较小,模拟证明燃气辐射采暖满足室内温度的要求.

In this paper, the research of the application effect about the volleyball gymnasium is simulated based on the software named Airpak2.1, selecting the DO radiant model and k - ε model. The temperature field of the floor and the space and the curve of vertical temperature are obtained, and the relevant analysis for them is done. Around the section near the south window, the heat transfer coefficient of the windows is bigger than that of the surrounding protection structure; the cool air penetrates the gaps of windows into the room. The temperature in the low part of the room is about 18℃ ; the temperature is a little higher than y = 7m; the average temperature on the ground is about 20℃ ; and the temperature grads is much higher around the ground ; the change ranges from y = 0.5m to y = 6 ; the indoor temperature is stable. The temperature grads increases from y = 6m to y = 8m. The temperature is the highest from y = 8m to y = llm. The conclusion is that the temperature in the heating space is about 18 ℃ ;the temperature on the floor is a little higher than the indoor air; the temperature grads in the space is low;and it is proved that the gas- fired radiant heating can meet the temperature of training required.