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太阳房及其组件的热性能研究

Study on Thermal Performance of a Solar Building and Its Parts

【作者】 郝改红

【导师】 梁则智;

【作者基本信息】 太原理工大学 , 市政工程, 2002, 硕士

【摘要】 本文以一种主要通过主动式和被动式相结合的方式进行冬季采暖的太阳能建筑为研究对象,它的主动式部分为太阳能地板辐射采暖系统,被动式部分为太阳能空气集热器。 应用平衡分析法,建立了太阳能空气集热器的数学模型,并采用实验和模拟计算相结合的方法,对太阳能空气集热器的构造对其集热性能的影响进行了模拟分析,得出空气集热器的V形槽开口角γ、夹层空间几何特征比A、通风孔面积与空气夹层横截面积之比Av/As等分别在下述区间内取值时,空气集热器的效率达到最佳: γ:[60°~75°] A:[1~1.5] Av/As:[0.8~1] 本文还建立了太阳能地板辐射采暖系统的传热数学模型,应用有限差分法,对数学模型进行了求解,通过理论计算,得出了具有实用价值的结论。 地板表面相邻两管间水平方向的温度分布:距离加热管越近,温度越高;两管中间处温度最低; 供回水温差越小,地板表面温度分布越平缓; 在供回水温度和排管间距均一定的情况下,地板覆盖层厚度越大,其温度分布越为平缓,对应的地板表面温度分布越均匀。 在供回水温度和覆盖层厚度均不变的条件下,排管间距越小,其温度分布越为平缓,地板表面的温度分布也越为均匀,地板表面平均温度也越高。 太阳能地板辐射供暖系统适用的供回水温度:40℃/35℃, 排管间距:160mm, 覆盖层厚度:60mm。

【Abstract】 In this paper , a solar building is taken as model which is heated in winter by passive and objective ways. They are solar radiant floor heating system and sptar air heater .The mathematical model of energy balance is built . The influence of the construction of solar air heater on its thermal performance is analyzed . To make the thermal efficiency best , y , A , Av/As should be:r: [60° -75° ] A: [1 - 1.5] Av/As: [0.8-1]In this paper , numerical model of solar radiant floor heating system is also built . The model of numerical model is solved by finite differance method .The smaller the distance to the tube is , the higher the temperature on the surface of the floor is . The smaller the the difference of the temperature of feedwater and backwater is , the more evenly and slowly the temperature distribution is .The smaller the thickness of overburden layer and the distance of two tubes are , the more evenly and slowly the temperature distribution is .The temperature of feedwater and backwater suited to solar radiant floor heating is 40℃/35℃ , the distance between two tubes is 160mm , the thickness of overburden layer is 60mm.

  • 【分类号】TU832
  • 【被引频次】7
  • 【下载频次】358
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