基于盐水缩尺模型实验的大空间下送中回分层空调竖向温度分布特性研究*
Vertical temperature distribution characteristics of stratified air conditioning with low sidewall air supply and middle sidewall air return in large space building based on brine scale model
摘要：
以某大空间实型建筑下送中回气流组织为原型，利用相似理论搭建盐水缩尺模型实验台。通过改进实验系统，使盐水实验台具有屋顶和墙体的传热模拟功能。通过测量竖直方向盐水浓度分布，转换得到原型中的竖向温度分布。实验验证结果表明，盐水模型实验所得竖向温度分布与原型实测结果基本一致。在此基础上，通过大量不同工况的盐水缩尺模型实验，获得下送中回分层空调竖向温度分布随分层高度、送风量、送风温度、回风口形式的变化特性。
Abstract：
Takes the air distribution of a large-scale real-sized building as the prototype, and builds a brine scale model test bench based on the similarity theory. Through the improvement of experimental system, the brine experimental platform has the heat transfer simulation function of the roof and wall. By measuring the brine concentration in vertical direction, obtains the vertical temperature distribution of the prototype with conversion. The experimental results show that the vertical temperature distribution obtained by the brine model experiment is basically consistent with the prototype test results. Takes a large number of experiments in different conditions, and obtains the vertical temperature distribution characteristics of the stratified air conditioning with low sidewall air supply and middle sidewall air return at different stratification height, air supply rates, air supply temperature and return air outlets.
Keywords:brine scale model, large space, stratified air conditioning, low sidewall air supply and middle sidewall air return, vertical temperature distribution