CO2 Distribution under CO2 Enrichment Using Computational Fluid Dynamics Considering Photosynthesis in a Tomato Greenhouse
CO2 Distribution under CO2 Enrichment Using Computational Fluid Dynamics Considering Photosynthesis in a Tomato Greenhouse
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DOI：
10.3390/app12157756
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发表时间：
2022-08
期刊：
影响因子：
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通讯作者：
M. Nurmalisa;T. Tokairin;T. Kumazaki;K. Takayama;T. Inoue
中科院分区：
文献类型：
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作者：
M. Nurmalisa;T. Tokairin;T. Kumazaki;K. Takayama;T. Inoue
这项研究验证了计算流体动力学模型所预测的二氧化碳分布，该模型考虑了室内和温室中光合作用对二氧化碳的吸收。尽管以前已经对温室内二氧化碳的分布进行了研究，但光合作用与穿孔管排放的二氧化碳的影响仍不完全清楚。此外，还比较了小室模型和温室模型中CO2浓度的测量结果和模拟结果。温室侧通风口打开和关闭的情况表明，关闭侧通风口的二氧化碳浓度比温室内打开侧通风口的略高。相比之下，植物内部二氧化碳的变异系数(CV)，打开(8.8%)和关闭(8.7%)侧通风口，几乎没有引起明显的改善。此外，雨天和晴天模型的例子表明，光合作用有效辐射可能通过光合作用补偿二氧化碳的吸收，使其在弱光(雨天)时较低，在强光(晴天)时较高。尽管如此，植物内部二氧化碳浓度在雨天和晴天之间的变化决定了几乎没有显著的差异。因此，本研究揭示了温室内CO2的分布特征、光合作用和CO2浓度的变异性，从而导致了温室内CO2的增加效率。
This study validated the CO2 distribution predicted by a computational fluid dynamics model considering CO2 absorption by photosynthesis in a chamber and greenhouse. The effect of photosynthesis with CO2 emission from a perforated tube remains not fully understood, although previous studies on CO2 distribution in greenhouses have been conducted. Moreover, comparisons between CO2 concentration measurement and simulation were obtained in the chamber and greenhouse model. Cases with open and closed side vents of the greenhouse showed that closed side vents have slightly more even of CO2 concentration than those with open side vents inside the greenhouse. In contrast, the coefficient of variance (CV) of CO2 inside the plant, open (8.8%) and closed (8.7%) side vents, induced almost no significant improvement. Additionally, cases of a rainy- and sunny-day model showed that photosynthetically active radiation possibly compensated CO2 absorption through photosynthesis to be low at low light (rainy day) and higher at high light (sunny day). Nonetheless, the variability of CO2 concentration inside the plant between rainy and sunny days determined almost no significant difference. Thus, this research shows characteristics of CO2 distribution, assessing photosynthesis and the variability of CO2 concentration that leads to the efficiency of CO2 enrichment in the greenhouse.