一种分光型温室覆盖结构的光学特性研究

本文针对温室设计了一种分光型覆盖结构,该结构可以使太阳光中的可见光进入温室提供植物光合作用所需光能,近红外光反射到薄膜电池转化成电能。本文利用光学软件模拟不同入射角下该结构的光学特性,室外试验结果表明,该结构全天可见光透过率在36%～48.9%之间,室内照度为20～30 klx,基本满足植物生长需求;输出电功率呈现早晚低、正午高的趋势,最大瞬时电功率为27.4 W·m^?2。本研究提出的分光型覆盖结构实现了温室中的光谱分频利用,为提高温室全光谱太阳能的综合利用提供了一种新的方法。

Optical Performance Research on the Spectral Splitting Covering of Greenhouse

A new spectral splitting covering is designed in this paper for greenhouse.The visible light can enter the greenhouse through the structure to provide light energy for photosynthesis,and near-infrared light is reflected to thin-film cells to convert into electricity.In this paper,the optical characteristics of the structure under different incident angles are simulated by optical software.The outdoor experiment results showed that the visible light transmittance of the structure was between 36%and 48.9%,and the indoor illumination from 9:00–15:00 was 20～30 klx,which basically meet the needs of plant growth.The maximum instantaneous electric power was high at noon and achieved to 27.4 W·m^?2,while the output electric power was low in the morning and evening.The spectral splitting covering proposed in this study realizes the spectral splitting utilization in greenhouse,and provides a new method to improve the comprehensive utilization of solar energy in greenhouse.