通风槽式地板下送风空调系统性能分析

以空间小、人员密集的小型隔音会议室为研究对象,设计了一种通风槽式地板下送风系统. 采用CFD模拟与实验验证相结合的方式,对该会议室的通风性能进行了研究. 通过对比3种送回风结构的室内温度场和速度场分布得出,当采用送回风口异侧模型时室内人员有更好的舒适性体验; 对于小型会议室,为了提升人体舒适感,更适宜采用非静压箱型地板送风方式. 在此送回风方式基础上,分析了小型会议室内人员数量和送风温度对室内热舒适度的影响,并以典型工况为例将实测结果与模拟结果进行了对比. 实验结果表明,实测与模拟的误差在可接受范围内,说明模拟结果具有可信性,通风槽式地板下送风系统用于小空间可满足人员的舒适性要求.

Performance Analysis on the Air Conditioning SystemUnder Floor with Ventilation Trough

A small soundproof conference room with small space and dense personnel is taken as the research object in this paper. A ventilation trough type underfloor air supply system is designed,and CFD simulation and experimental verification are combined to study the ventilation performance of the conference room. By comparing the distributions of indoor temperature field and velocity fields of three kinds of return air structures,it can be concluded that indoor personnel has better comfort experience when the model of the different side of the return air outlet is adopted. At the same time,for small conference rooms,in order to improve human comfort,it is more appropriate to adopt the non-static pressure box type floor air supply mode.Based on this method,the influence of the staff number and supply air temperature on indoor thermal comfort in a small type conference room is analyzed,and the typical working conditions are used as the example to compare the measured results with the simulated results. The experimented results show that the error between the measurement and simulation is within the acceptable range,which shows that the simulation results are credible. The ventilation trough under-floor air supply system can meet the requirements of personnel comfort shows when used in small space.