太阳照射下吸附床内部温度的数值模拟

发布时间：2018-06-02 07:58

  本文选题：太阳辐射 + 吸附式制冷　； 参考：《北京工业大学学报》2017年01期

【摘要】：为了研究在太阳照射下不同时刻吸附床内部温度的变化情况以及不同冷却条件对吸附床温度场的影响,在充分了解太阳辐射强度变化规律的基础上,建立了真空管吸附床的二维导热模型,并采用FLUENT软件对恒壁温冷却和空气自然对流冷却2种边界条件下吸附床内部的温度变化进行数值模拟研究,观察其吸附床内部温度场分布.模拟结果表明:太阳照射下吸附床内部的温度分布明显是不均匀的;恒壁温冷却和空气自然对流冷却2种边界条件下吸附床内部达到的最大温度差值接近100℃.因此,可以得出恒壁温的冷却效果远比空气自然对流冷却的效果好;吸附床内温度的不均匀分布将不利于整个吸附床的吸附性能.
[Abstract]:In order to study the variation of internal temperature in adsorption bed at different times under solar irradiation and the influence of different cooling conditions on the temperature field of adsorption bed, the variation law of solar radiation intensity is fully understood. A two-dimensional heat conduction model for vacuum tube adsorption bed is established. The temperature variation in the adsorption bed under the boundary conditions of constant wall temperature cooling and air natural convection cooling is numerically simulated by FLUENT software. The temperature distribution in the adsorption bed was observed. The simulation results show that the temperature distribution in the adsorption bed under solar irradiation is obviously uneven, and the maximum temperature difference within the adsorption bed is close to 100 鈩，

本文编号：1968020