中文摘要：

太阳能烟囱是利用太阳能强化自然通风的技术。在考虑了集热墙与玻璃盖板的热阻和太阳辐射在一天中的波动等因素的基础上，建立了一个太阳能烟囱自然通风的一维非稳态模型，采用Crank-Nicolson差分方法对模型进行了数值求解，讨论了集热墙、玻璃盖板、通道内的空气以及空气质量流量等参数对时间的分布特点。结果表明，随着太阳辐射强度的增加，烟囱诱导空气的质量流量逐渐增加。但是受到集热材料热惰性的影响，最大空气流量值出现在午后2小时。

英文摘要：

Solar chimney is effective to enhance the natural ventilation. A one-dimensional unsteady model was proposed for the natural ventilation in solar chimney. The model takes into account the thermal resistances of the glass cover and the absorber wall and the real solar radiation variation in one day. Numerical solution was carried out based on Crank-Nicolson difference scheme. The transient temperature variation in the glass cover, the absorber wall, the air in the channel and the mass flow rate were discussed. The results showed that the air mass flow rate in the chimney increased as the solar radiation increased. However, the maximum air mass flow rate appeared at 2：00 pm due to the influence of the thermal inertia of the absorber wall.