风速对空调实验室气流分布均匀性的影响分析

Analysis of the Influence of Wind Speed on Air Distribution Uniformity in Air Conditioning Laboratory

摘要: 空调实验室温度场、速度场的均匀性的研究对被侧机的性能测试有着重要意义，本文以某企业已建成的实验室为研究对象，通过CFD (Computational Fluid Dynamics)建模将模拟的数据与实验数据进行对比，其中速度场的相对误差基本在10%以下，温度场实际测量值与模拟计算值差值控制在0.05 K~0.25 K，综合考虑模型是可以用做优化分析。本文提出通过改变送风速度来改善实验室内部温度场均匀性，通过模拟发现当送风速度为3.5 m/s时，实验室内部流场均匀性明显提升，但当继续增大送风速度时，温度场变化逐渐剧烈，因此，小幅度地提高风速会使实验室内部流场更加均匀，但当风速达到一定值时，就会使实验室温度场均匀性下降。

Abstract: The research on the uniformity of temperature field and velocity field in the air conditioning la-boratory is of great significance to the performance test of the side machine. In this paper, the la-boratory that has been built in an enterprise is taken as the research object; CFD (Computational Fluid Dynamics) modeling was used to compare the simulated data with the experimental data, in which the relative error of the velocity field is basically less than 10%, and the difference between the actual measured value of the temperature field and the simulated calculated value is controlled between 0.05 K~0.25 K. The comprehensive consideration of the model can be used for op-timization analysis. This paper proposes to improve the uniformity of the temperature field in the laboratory by changing the air supply speed. It is found by simulation that when the air supply speed is 3.5 atm/s, the uniformity of the flow field in the laboratory increases obviously, but when the air supply speed continues to increase, the temperature field changes gradually. Therefore, a small increase in the wind speed will make the flow field in the laboratory more uniform, but when the wind speed reaches a certain value, the uniformity of the temperature field in the laboratory will decrease.