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集热器面积与倾角是太阳能热水工程设计中的重要参数。综合考虑气候、用水方式、太阳辐射和热水负荷的季节性等因素,建立完整的组合优化计算模型,在合理年太阳能保证率的前提下确定集热器面积,以年辅热量最小的原则确定与集热器面积相配的倾角,并以3个城市为例进行计算。结果表明,当太阳辐射与热水负荷变化趋势相反,最佳倾角随集热器面积增加而增大;当太阳辐射与热水负荷变化趋势相同,最佳倾角随集热器面积增加基本不变。
Collector area and dip angle is an important parameter in solar hot water project design. Considering the factors of climate, water consumption, solar radiation and seasonal load of hot water, a complete combinatorial optimization calculation model is established to determine the collector area under the premise of a reasonable annual solar guaranteed rate, which is determined by the principle of minimizing annual heat input Inclination with the area of the collector, and take 3 cities as an example. The results show that when the solar radiation and the hot water load change in the opposite trend, the optimum inclination angle increases with the increase of the collector area. When the solar radiation and the hot water load change in the same trend, the optimum inclination angle basically does not change with the collector area increase .