Analysis of materials used for Greenhouse roof covering - structure using CFD
Analysis of materials used for Greenhouse roof covering - structure using CFD
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使用 CFD 分析温室屋顶覆盖材料 - 结构
DOI：
10.1088/1757-899x/346/1/012068
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
C. Periasamy
中科院分区：
文献类型：
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作者：
M. Subin;Jason Savio Lourence;R. Karthikeyan;C. Periasamy
温室被广泛应用于为植物生长创造适宜的环境。在夏季，高温会对植物造成伤害。这项工作计算所需的特性，以优化上述参数，使用不同的屋顶结构覆盖材料的温室。此外，本工作还提出了一个模拟的冷却和加热系统。此外，基于Ansys Fluent的计算机模型已被用于预测温室内的温度分布。温室屋顶结构遮荫对植物的产量、水分和养分吸收有时间依赖性的影响。在阿拉伯联合酋长国的迪拜酋长国进行了一项实验，以发现不同材料的影响，以获得最佳的植物生长区和产量。这些结构是2种不同构型的聚乙烯和聚碳酸酯片。结果表明，最佳厚度的聚碳酸酯片材配置在产率方面给出了较高的结果。因此，在阿联酋该地区需要选择合适的温室屋顶结构材料。在选择温室屋顶结构时需要考虑的主要参数和性能是耐太阳辐射，耐候性，热性能以及机械性能和良好的耐磨性。在本研究中，已经进行了一项实验，以找出温室屋顶结构的材料的适用性，在发展适当的环境条件，特别是通过减少暖通空调和照明费用，以尽量减少能源损失。使用CFD验证了该配置，因此得出结论，与其他具有白色或绿色颜色的屋顶结构材料相比，聚碳酸酯可以安全地用于温室。
Greenhouse is widely used to create a suitable environment for the growth of plant. During summer, high temperatures cause harm to the plant. This work calculates characteristics required to optimize the above-mentioned parameters using different roof structure covering materials for the greenhouse. Moreover, this work also presents a simulation of the cooling and heating system. In addition, a computer model based on Ansys Fluent has been using to predict the temperature profiles inside the greenhouse. Greenhouse roof structure shading may have a time-dependent effect the production, water and nutrient uptake in plants. An experiment was conducted in the emirate of Dubai in United Arab Emirates to discover the impact of different materials in order to have an optimal plant growth zone and yield production. These structures were poly ethylene and poly carbonate sheets of 2 different configurations. Results showed that poly carbonate sheets configuration of optimal thickness has given a high result in terms of yield production. Therefore, there is a need for appropriate material selection of greenhouse roof structure in this area of UAE. Major parameters and properties need to be considered while selecting a greenhouse roof structure are the resistance to solar radiation, weathering, thermal as well as mechanical properties and good abrasion resistance. In the present study, an experiment has been conducted to find out the material suitability of the greenhouse roof structure in terms of developing proper ambient conditions especially to minimize the energy lose by reducing the HVAC and lighting expenses. The configuration verified using the CFD, so it has been concluded that polycarbonate can be safely used in the greenhouse than other roof structure material having white or green colour.