摘要
该文开发了一套利用菲涅尔透镜聚焦太阳光加热钻杆从土壤中取水的装置,在证明可行性后对其进行优化,可提高钻杆高温区域温度并增强钻杆的透水性,研究土壤含水率和钻杆透水性对取水能力的影响。结果显示,在含水率27.5%、太阳光斑功率为152 W的条件下,优化后的装置每小时取水量可达45 g。该装置可在不投入外界其他形式能量的前提下仅靠太阳光运行,其能量利用效率高达20.41%。
This research develops a device that uses a Fresnel lens to focus sunlight to heat a porous media drill pipe to extract water from the soil.After proving the feasibility,the device is optimized to increase the temperature of the high-temperature area of the drill pipe and strengthen the drill pipe water permeability,and studies the effect of soil moisture content and drill pipe water permeability on water extraction capacity.The results show that under the condition of 27.5%moisture content and 152 W solar spot power,the optimized device can take 45 g of water per hour.The experimental device can operate solely on sunlight without inputting other forms of external energy,and its energy utilization efficiency is as high as 20.41%.
作者
黑秉森
李啸天
全晓军
李思雨
Hei Bingsen;Li Xiaotian;Quan Xiaojun;Li Siyu(School of Mechanical and Engineering,Shanghai Jiaotong University,Shanghai 200240,China;Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Tsinghua University,Beijing 100084,China)
出处
《太阳能学报》
北大核心
2025年第8期498-505,共8页
Acta Energiae Solaris Sinica
基金
上海市产业协同创新项目(一种便捷式的太阳能土壤取水装置)。
关键词
太阳能
水分蒸发
水资源
土壤水分
两相流
气液相变
solar energy
evaporation
water resources
soil moisture content
two phase flow
liquid-gas phase change
作者简介
通信作者:全晓军(1972-),男,博士、副研究员,主要从事激光器、微电子及微尺度传热,冷凝、沸腾相变换热特性,电场、纳米流体强化换热方面的研究。quan_xiaojun@sjtu.edu.cn。
