本文搭建了一个小型太阳能热气流烟囱的实验台,测量了其在不同工况下壁面,空气温度,以及系统瞬时质量流量.结果表明随着太阳辐射强度的增加壁面和空气的温度以及系统流量均提高.对所建实验台进行数值模拟,结果显示,不考虑系统辐射,以输入功率换算的太阳辐照强度为边界条件模拟会高估系统壁面温度和流量,考虑了系统辐射后则能得到与实验测量值相近的结果.“,”A small solar chimney prototype was built.Temperatures of walls and air in the solar chimney and the system transient mass flow rate were measured under different solar radiation.Experimental results show that temperatures and the transient mass flow rate all increase with the solar radiation.Numerical simulation results of the prototype show that without considering the radiation losses,the wall temperatures and the mass flow rates with fixed heat flux boundary conditions provided from measurements are much higher than experimental results.However,with the consideration of the radiation losses the simulation results are close to experimental results.