针对安装有被动式太阳能集热蓄热装置的装配式日光温室,建立日光温室及其蓄热装置的计算流体力学瞬态模型,对温室内部热环境及蓄热装置蓄、放热过程进行数值模拟分析,并通过实验验证模拟结果的准确性。在此基础,为使蓄热装置达到更好的使用效果,开展以相变材料为石蜡的蓄热介质的蓄放热特性研究。结果显示：使用该种集热蓄热装置可有效提高夜间温室内温度,且集热蓄热板高厚比为60（即高×厚为3000 mm×50 mm）时,相变材料使用效果最佳,温室内夜间平均温度可提高1.73 ℃,夜间温度最大可提高2.34 ℃。
Abstract
In this paper, for the assembled solar greenhouse equipped with passive solar heat collection and storage device, an established computational fluid dynamics transient model was used to analyze the internal thermal environment of the solar greenhouse and the heat storage and release process of its heat storage device. The accuracy of the simulation results was verified through experiments. On this basis, to enhance the utilization of heat storage, the heat storage and release characteristics of the heat storage medium using paraffin wax as phase change material was studied. The results demonstrate that the utilization of this type of heat collection and storage device effectively enhances nighttime temperatures in the greenhouse. Specifically, when the height to thickness ratio of the heat collecting and storage plate is 60 （the height × thickness dimension is 3000 mm×50 mm）, employing a phase change material yieldes optimal results. The average nighttime temperature in the greenhouse can be increased by 1.73 ℃, and the nighttime temperature can be increased by a maximum of 2.34 ℃.
关键词
日光温室 /
太阳能 /
蓄热 /
相变材料 /
数值模拟
Key words
solar greenhouse /
solar energy /
heat storage /
phase change materials /
numerical simulation
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基金
国家重点研发计划（2021YFE0194500）
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