| 整体式太阳热水器在寒冷气候条件下的冻结厚度与热损系数U值及水层深度的关系 |
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| 引用本文： | 叶宏,葛新石,张永峰. 整体式太阳热水器在寒冷气候条件下的冻结厚度与热损系数U值及水层深度的关系[J]. 太阳能学报, 2002, 23(3): 270-276 |
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| 作者姓名： | 叶宏 葛新石 张永峰 |
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| 作者单位： | 中国科学技术大学热科学和能源工程系,合肥,230027 |
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| 摘 要： | 利用一维焓法建立了第三类边界条件下有限厚度的水存在自然对流时的冻结过程的理论模型，并利用类似于反问题的方法。结合计算和实验的手段确定了热损系数U值，所建模型和计算结果通过不同的实验条件得到了验证。该模型可用来确定在寒冷气候条件下整体式（ICS）太阳热水器的冻结厚度与热损系数U值及水层深度的关系，并根据国内一些城市冬季的气象参数，给出了典型的计算结果，所得结果可对ICS太阳热水器的设计及对透明盖板材料和选择性涂层的选用提供参考。
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| 关 键 词： | 整体式（ICS）太阳热水器 热损系数 冻结厚度 |
| 文章编号： | 0254-0096(2002)03-0270-07 |
| 修稿时间： | 2001-05-20 |
THE RELATIONSHIP BETWEEN THE U VALUE AND THE THICKNESS OF FROZEN ICE OF ICS SOLAR WATER HEATERS UNDER COLD WEATHER CONDITIONS- ANUMERICAL ANALYSIS AND INDOOR EXPERIMENTAL STUDY |
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| Ye Hong,Ge Xinshi,Zhang Yongfeng. THE RELATIONSHIP BETWEEN THE U VALUE AND THE THICKNESS OF FROZEN ICE OF ICS SOLAR WATER HEATERS UNDER COLD WEATHER CONDITIONS- ANUMERICAL ANALYSIS AND INDOOR EXPERIMENTAL STUDY[J]. Acta Energiae Solaris Sinica, 2002, 23(3): 270-276 |
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| Authors: | Ye Hong Ge Xinshi Zhang Yongfeng |
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| Abstract: | An one dimensional enthalpy method considering natural convection in the liquid is developed to study the freezing process of water with the third kind boundary condition. The model is verified by indoor experiments and can be of use to determine the relationship between the U value of integrated collector storage (ICS) solar water heaters and the thickness of frozen ice formed in it when exposed to the cold weather conditions for certain period of time. Typical calculation results are presented using diurnal cold winter weather conditions of some cities in China. |
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| Keywords: | ICS solar water heater heat loss coefficient frozen thickness |
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