Semi-Transparent Organic Photovoltaics Applied as Greenhouse Shade for Spring and Summer Tomato Production in Arid Climate
Semi-Transparent Organic Photovoltaics Applied as Greenhouse Shade for Spring and Summer Tomato Production in Arid Climate
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DOI：
10.3390/agronomy11061152
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发表时间：
2021-06-01
期刊：
影响因子：
3.7
通讯作者：
Yehia, Ibrahim
中科院分区：
文献类型：
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作者：
Waller, Rebekah;Kacira, Murat;Yehia, Ibrahim
意识到有机光伏(OPV)在温室作物生产系统中的应用日益引起人们的兴趣，在本研究中，我们使用灵活的卷筒式印刷半透明OPV阵列作为美国西南部干旱地区春夏生产季节温室水培番茄生产系统的屋顶遮挡。波长选择性OPV阵列安装在温室屋顶的一个连续区域，将所有太阳辐射波长和光合作用有效辐射(PAR)波长(400-700 nm)对OPV遮荫区域的透射率分别降低约40%和37%。小气候条件和番茄作物生长和产量参数都在温室的OPV遮荫(OPV)和非OPV遮荫(‘Control’)部分进行了测量。在太阳辐射强度最高的中午时段，OPV遮阳板稳定了树冠温度，发挥了传统遮阳法的功能。虽然OPV区果实发育和成熟延迟导致总产量低于对照区(分别为24.6 kg m(-2)和27.7 kg m(-2))，但在第4次(共10次)收获后，平均周产量、果实数和果实质量在处理(OPV遮荫)和对照之间没有显著差异。光能利用效率(LUE)，定义为总果实产量与植物冠层接收的累积PAR的比率，几乎是对照的两倍，OPV覆盖区的植物每摩尔PAR有21.4g果实，而对照区为10.1g。总体而言，这项研究表明，在高光地区使用半透明有机废纸作为温室生产的季节性遮荫元素是可行的。然而，更高的PAR透过率以及更高的OPV设备效率和耐用性可以使OPV遮阳在经济上更可行，为炎热和高光强地区的共用温室作物生产和可再生能源发电提供理想的解决方案。
Recognizing the growing interest in the application of organic photovoltaics (OPVs) with greenhouse crop production systems, in this study we used flexible, roll-to-roll printed, semi-transparent OPV arrays as a roof shade for a greenhouse hydroponic tomato production system during a spring and summer production season in the arid southwestern U.S. The wavelength-selective OPV arrays were installed in a contiguous area on a section of the greenhouse roof, decreasing the transmittance of all solar radiation wavelengths and photosynthetically active radiation (PAR) wavelengths (400-700 nm) to the OPV-shaded area by approximately 40% and 37%, respectively. Microclimate conditions and tomato crop growth and yield parameters were measured in both the OPV-shaded ('OPV') and non-OPV-shaded ('Control') sections of the greenhouse. The OPV shade stabilized the canopy temperature during midday periods with the highest solar radiation intensities, performing the function of a conventional shading method. Although delayed fruit development and ripening in the OPV section resulted in lower total yields compared to the Control section (24.6 kg m(-2) and 27.7 kg m(-2), respectively), after the fourth (of 10 total) harvests, the average weekly yield, fruit number, and fruit mass were not significantly different between the treatment (OPV-shaded) and control group. Light use efficiency (LUE), defined as the ratio of total fruit yield to accumulated PAR received by the plant canopy, was nearly twice as high as the Control section, with 21.4 g of fruit per mole of PAR for plants in the OPV-covered section compared to 10.1 g in the Control section. Overall, this study demonstrated that the use of semi-transparent OPVs as a seasonal shade element for greenhouse production in a high-light region is feasible. However, a higher transmission of PAR and greater OPV device efficiency and durability could make OPV shades more economically viable, providing a desirable solution for co-located greenhouse crop production and renewable energy generation in hot and high-light intensity regions.