不同气流组织下对室内甲醛浓度影响模拟分析

以办公间为研究对象,在不同的气流组织形式下,运用CFD-Fluent14.0模拟软件对室内房间顶送下回、异侧上送下回、同侧上送下回及下送顶回四种典型气流组织形式进行模拟研究。通过比较分析不同气流组织形式下办公间内的流场、浓度场和速度场的数值模拟结果,找出比较合理的通风方式,以达到快速降低办公间内的甲醛含量的目的,为长期处于工作间内的人员提供一个具有良好空气品质的舒适环境。通过比较模拟的结果发现,同样的室内条件下,当送风方式为顶送下回时办公间内的空气质量为四种气流组织形式中最佳。

Simulation Analysis of the Effect of Different Air Distribution on Indoor Formaldehyde Concentration

With office space as the research object, under different air distribution forms, CFD-Fluent14.0 simulation software is applied to simulate air flow in a room under four organization forms: top supply and down return, different side up supply and down return, same side up supply and down return, and down supply and top return.The numerical simulation of flow field, concentration field and velocity field in office space are analyzed and compared to find a more reasonable way of ventilation, and quickly reduce the formaldehyde concentration in the offices, provide a good air quality and comfortable environment for long-term personnel in the office.By comparing the results of the simulation, in the same indoor conditions, top supply and down return mode of indoor air quality is better than other three air supply modes.