Water-saving Irrigation System in Arid Areas of Northern Tibet Based on Complementary Wind and Solar
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摘要:
藏北草原退化源于干旱，藏北草原地下水资源丰富，但不能被有效利用，通过多次尝试，设计了一套适用于藏北干旱牧区灌溉的节能系统，采用混合式风光互补系统发电，是创新型清洁发电，具有节能、占用面积小、覆盖面积大及利于藏北地区灌溉牧区等优势，真正体现了小身板、大力量的特点。
Abstract:Degradation of grassland in northern Tibet originates from drought．According to observations, grassland in northern Tibet is rich in groundwater resources, but could not be effectively utilized．Through several experimental designs, a set of energy-saving system device for irrigation in arid pasture areas in northern Tibet was developed, hybrid wind-solar complementary system power generation device was used, which was based on innovative clean power generation with energy saving, small occupied area, large coverage area and beneficial to the people in northern Tibet for irrigation and pasture areas, which truly reflected small size and great efforts．
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图 1 风光互补节水灌溉装置示意
Figure 1. Schematic diagram of complementary wind and solar water-saving irrigation device
图 2 风光互补节水灌溉装置结构
1. 支腿 2. 底部框架 3. 叶片 4. 垂直轴风力发电机 5. 太阳能发电板6. 控制器 7. 竖杆 8. 电源部 9. 输水管路 10. 连接管路 11. 水泵
Figure 2. Structure of complementary wind and light water-saving irrigation device
表 1 经济效益指标对比
Table 1. Comparison of economic benefit indicators
指标名称 风光互补灌溉系统 普通灌溉工程 投资额/万元 15.22 5.60 年效益/万元 4.06 1.48 年运行费用/万元 0.95 0.62 经济净现值/万元 16.13 2.19 经济内部收益率/% 19.70 10.52 经济效益费用比 1.82 1.27 注：取社会折现率7％，工程使用期20年。 
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