办公室空调房间热环境数值模拟研究

Research on Numerical Simulation of Thermal Environment in an Air Conditioning Office

运用k-ε湍流模型对某办公室空调房间气流组织和热舒适性进行了数值模拟,利用有限容积法和SIMPLE算法对微分方程进行离散求解。研究了室内空气龄云图、温度云图、速度矢量图、PMV云图、PPD云图分布规律。模拟结果表明:室内热环境满足健康、舒适、节能等方面的要求。利用TESTO445型多功能测量仪对人员办公区的空气温度、气流速度进行了测量,测量数据与模拟结果基本一致。在空调系统设计阶段,采用CFD技术可预测室内气流组织、热舒适性及为空调系统优化设计方案提供理论依据和科学指导。

Air flow organization and thermal comfort of an air conditioning office were numerically simulated with k-ε turbulence model. The finite volume method and SIMPLE arithmetic were adopted to disperse and solve the differential equation. Distribution law of mean age of air, temperature nephogram, velocity nephogram, PMV nephogram and PPD nephogram was studied in this paper. Simulation results indicated that indoor thermal environment was health, comfortable and energy saving etc. Air temperature and speed in office zone were measured by multifunction admeasuring apparatus of TESTO445 type. The agreement between the measured data and the simulated results is quite well. In the design stage of air conditioning, CFD technology provides theoretical basis and scientific guidance for predicting indoor air flow organization, thermal comfort and optimizing design scheme of air conditioning.