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单击此处编辑母版标题样式,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,The Efficiency of RainwaterHarvesting Systems,by Stefan,21 March 2021,Introduction,Rainwater,harvesting systems are widely applied in mountainous and arid areas of northern Shaanxi Province in order to satisfy irrigation and drinking water demand.,So determination of the,quantitative relationship,between collected water and precipitation is a basic issue for optimizing these systems.,Introduction,However,serial related data is very limited because no experiment has been done under,simulated,rainfall conditions.,It is essential to get enough information and to use proper,software,to handle the data.,The objectives of this research areto determine the quantity of rainwater that can be collected from a rainwaterharvesting systemcommon used during different precipitation events and to design a GUI interface in Matlab to automatically get feedback about the amount of water collected during different precipitation events,Materials and Methods,Sampling location:,Mizhi county,Soil type:,loess-derived soil,Experiment site:Yangling,Experiment time:,April 2021,Employed tool:Matlab,Mizhi county,Experimental Design,Treatments,(precipitation):,0(control),3,6,9,12,15,20,30,40,50,60,70and 80 mm of,simulated,precipitation,Measurements:,Precipitation,Quantity of collected water,Application achieve:,Through GUI design in Matlab,we can predict the amount of collected water for any given precipitation event,Conclusions,When precipitation was less than 6 mm,no water was collected and the system efficiency was approximately zero,When the precipitation increased from 6 mm to about 60 mm,the quantity of collected water increased faster than the precipitation,raising the collection efficiency to a peak of 40%,Conclusions,As the precipitation increased above 60 mm,system efficiency remained just over 40%,The GUI interface functioned well.For example,with a precipitation event of 42 mm,we can predict 6.46 mm of collected water,Questions?,Thank you,！,The Efficiency of RainwaterHarvesting Systems by Stefan,Rainwaterharvesting systems are widely applied in mountainous and arid areas of northern Shaanxi Province in order to satisfy irrigation and drinking demand.So determination on the quantity of rainwater that can be collected in different rainfall conditions from the rainwaterharvesting system is a basic issue for optimizing these systems.However,no research has been done to get information in simulated rainfall condition,limiting getting serial data which is essential for a better understanding.We evaluated the water collecting efficiency of them in this paper.We tested this efficiency in 13 treatments with simulated precipitations ranging from 0 mm to 80 mm.Matlab(R:2021a)was employed to interpose the precipitationcollected water function and a GUI interface was designed to automatically get the feedback of collected water quantity during different precipitation events.The collecting efficiency can be divided into three stages.When precipitation was less than 6 mm,no water was collected while when the precipitation increased from 6 mm to about 60 mm,the quantity of collected water increased faster than the precipitation,raising the collection efficiency to a peak of 40%.After that,as the precipitation increased above 60 mm,this efficiency remained just over 40%.The GUI interface functioned well.For example,with a precipitation event of 42 mm,we can predict 6.46 mm of collected water.This study indicated that efficiency of rainwaterharvesting systems increased as the precipitation after it reached the threshold value of 6 mm.,
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