【摘要】 所建立的太阳集热器动态模型不同于传统模型是因为其考虑了集热器容水量的热容对集热器热特性的影响。研究了该模型与传统模型的区别,分析了不同类型容水量对集热器出水水温、集热系统水泵的启停控制、有效集热量的影响。结果显示:水热容对全玻璃真空管集热器的出水温度影响明显;对于容水量较小的平板式集热器,水热容的影响相对较小;减少容水量会增加水泵开启时间,增加有效集热量。更多还原

【Abstract】 Different from the traditional model,the thesis developed a new model for solar collector,considering the effect of inertia of water on the thermal performance of solar collector and compares the differences between the traditional models.This paper concludes the effectiveness of inertia of water on the outlet temperature,the control of pump in the solar energy system and the useful energy gain.Compared with the model without water inertia,the effect of water inertia is important;for all-glass evacuated tube collector the effect can be ignored owing to its less water inertia for flat plate collector.Less water inertia leads to more pump run-on time,and more effective energy will be collected.更多还原