PVC浮板自由排列下干旱区平原水库防蒸发研究

Study on Anti-evaporation of Plain Reservoir in Arid Area under Free Arrangement of PVC Floating Plate

为研究干旱区平原水库处于静水或风浪较小下PVC浮板自由排列时的节水率,采用3组不同尺寸的浮板,在蒸发器内模拟浮板自由排列在水库的间隙率,结果表明浮板自由排列的间隙率为0.25。试验还研究不同覆盖率的浮板对水面的蒸发抑制率,结果表明当浮板覆盖率为0.75时,蒸发抑制率为75%。试验总结得出干旱区平原水库处于静水或风浪较小下,浮板自由排列时对水库的蒸发抑制率为75%。

In order to study the water saving rate of PVC floating plates in the arid plains reservoir under the conditions of still water or small storm waves,three groups of floating plates with different sizes were used to simulate the free space of the floating plates arranged in the reservoir in the evaporator. The results showed that the free space of the floating plates was 0. 25. The experiment also studied the evaporation inhibition rate of the water surface with different coverage of the floating plate. The results show that when the floating plate coverage is 0. 75,the evaporation inhibition rate of 75%. The experiment concluded that when the arid plains reservoir is in the condition of still water or small wind and waves,the evaporation inhibition rate of the floating plate when the floating plate is arranged freely is 75%.