发布时间：

2026-10-01

影响因子：

9.8

DOI码：

10.1016/j.renene.2026.126518

论文名称：

A spectral-shifting radiative cooling film for improving photosynthesis，water use efficiency，and energy savings in greenhouses

发表刊物：

Renewable Energy

关键字：

Radiative cooling Thermal management Water use efficiency Photosynthesis Energy saving

摘要：

Greenhouse cultivation is essential for addressing global food security by enabling year-round, climate-controlled agriculture. However, sustainable production in greenhouses is often challenged by the need to maintain optimal growing conditions in hot climates, which require simultaneous spectral optimization for photosynthesis, passive cooling, and water conservation. In this study, we introduce a spectral-shifting radiative cooling film for effective microclimate regulation in greenhouses. The film features a multi-layer structure: the top layer dissipating heat via broadband mid-infrared (2.5–20 μm) emission, while the middle and bottom layers reduce solar heat gain by reflecting near-infrared (0.7–2.5 μm) radiation and selectively converting low-efficiency green light (0.5–0.6 μm) into highly photosynthetically active red light (0.6–0.7 μm). Under peak solar irradiation (885 W m−2), the film reduces greenhouse temperature by 9 °C and water evaporation by 13%. Remarkably, experimental results demonstrate that lettuce (Lactuca sativa L. cv. 'Tiberius') production increases by 41%–150% across three independent replicates, attributed to the optimized light spectra, temperature regulation, and improved water retention. An energy-saving model indicates a 23% reduction in cooling energy demand compared to conventional glass. This integrated microclimate-regulating strategy offers a sustainable, energy-efficient approach to augmenting greenhouse productivity.

论文类型：

期刊论文

学科门类：

理学

一级学科：

物理学

文献类型：

J

卷号：

277

页面范围：

126518

是否译文：

否

发表时间：

2026-10-01

收录刊物：

SCI