Experimental investigation of full solar spectrum utilization based on nanofluid spectral splitter for greenhouse applications

文献类型： 外文期刊

第一作者： Yuan, Yu

作者： Yuan, Yu;Fang, Hui;Wu, Gang;Cheng, Ruifeng;Zhang, Yi;Tong, Yuxin;Yuan, Yu;Fang, Hui;Wu, Gang;Yang, Qichang;Ma, Qianlei;Cheng, Ruifeng;Zhang, Yi;Tong, Yuxin;Yang, Qichang;Ma, Qianlei;Ji, Yaning

作者机构：

关键词： Full-spectrum; Solar energy; Spectral splitting; Nanofluid; Greenhouse

期刊名称：ENERGY CONVERSION AND MANAGEMENT （ 影响因子：11.533； 五年影响因子：10.818 ）

ISSN： 0196-8904

年卷期： 2022 年 254 卷

页码：

收录情况： SCI

摘要： According to its application, solar spectrum can be divided into plant active spectrum (PAS) (300 similar to 800 nm) and heat active spectrum (HAS) (800 similar to 1500 nm). PAS is absorbed by plants for photosynthesis, and HAS will cause indoor high temperature when entering the greenhouse, which is unfavorable to plants. Nanofluid-based spectral splitter (NSS) is an effective way to improve the full-spectrum utilization of solar energy because of its superior performance of high transmittance in PAS and strong absorption in HAS. In this study, ATO-WO3/H2O nanofluids (NFs) are synthesized, in which the nanoparticles (NPs) are composed of 2.4 vol% ATO and 97.6 vol% WO3 (ATO-WO3). Physical property analysis shows that the NPs are well-dispersed in the fluid. The average transmittance of 0.005 vol% ATO-WO3 NFs with 10 mm optical path-length is 79.56% in PAS and 24.22% in HAS. The photothermal efficiency of NSS is related to the thickness and flow rate of NFs. The outdoor experimental results show that the total solar utilization efficiency of NSS is higher than 73% under the condition of 10 mm thick NFs layer and 100 L/h flow rate. Among them, the photothermal conversion efficiency is 34.4%, and the annual output power is 358.9 kWh/m(2). Meanwhile, the light use efficiency is 39.2%, and the defined crop growth factor is 93.6%. In addition, the NSS system has a payback period of 0.76 years and a levelized cost of energy of 0.041 $/kWh within a 10-year life cycle. It shows that NSS greenhouse is feasible in technical and economic aspects. This study broadens the application of NFs in greenhouse and is an effective method to improve the full-spectrum utilization of solar energy.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序