金纳米流体在太阳能海水淡化中的研究

Study on Seawater Desalination by Solar with Gold Nanofluid

将金纳米流体加入盘式太阳能海水蒸馏系统,通过对比实验分析纳米流体的浓度对蒸发箱淡水产量以及光伏电池发电效率的影响。结果表明添加金纳米流体可以明显提高蒸馏系统单位面积产水量,并且随着纳米流体浓度的增加系统淡水产量也随之增加,实验中的采用纳米流体的蒸馏系统当日单位面积产水量最高达到了2802.7 mL/m^2相比于传统盘式蒸馏系统提升了39.96%;而光伏电池发电效率随着纳米流体的增加而下降。主要原因是随着纳米流体浓度的增加,纳米流体吸收率增加而透射率减少,导致海水吸收更多的太阳辐射而光伏电池接收的太阳光减少。

A series of comparative experiments on adding gold nanofluids to conventional solar seawater distillation system are conducted to analyze the effect of nanofluid concentration on water yield and photovoltaic efficiency. The results show that the water yield of the nanofluid-based system increases while photovoltaic efficiency decreases with the increase of the nanofluid concentration. The water yield of nanofluid-based system can reach 2802.7 mL/m^2, which is 39.96% higher than that of conventional system. The main reason is that as the nanofluid concentration increases, the decrease in nanofluidic transmittance causes seawater to absorb more solar radiation and the photovoltaic cells receive less sunlight.