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ROOFTOP RAINWATER HARVESTING AND ITS EFFICIENCY IN KABUL NEW CITY

机译：屋顶雨水收获及其在喀布尔新城的效率

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摘要

The Afghan government has planned the project of Kabul New City (KNC) in order to deal with the rapid growth of existing capital city, Kabul. The area of KNC is 1.5 times of existing Kabul City. The location of this new city is on a desert area beside the existing Kabul, and it is also surrounded by some watersheds with steep slope topography. Due to these topographical reasons, KNC will suffer a water scarcity problem. This study investigates the feasibility of a rooftop rainwater harvesting system in KNC to relieve the water scarcity problem. The volume of water which could be harvested by the system is estimated with using 10 years rainfall data. The volume of non-potable water consumption is also estimated from the current water use in Kabul city. As a case study, the efficiency of the rooftop rainwater harvesting system is cleared for a primary school, some types of houses and commercial buildings. An appropriate size of the water harvesting tank is also discussed based on the balance between harvested water volume and non-potable water demand.
机译：阿富汗政府计划计划喀布尔新城（KNC）的项目，以处理现有首都喀布尔的快速增长。 KNC地区是现有喀布尔市的1.5倍。这个新城市的位置位于现有喀布尔旁边的沙漠区域，也围绕着一些具有陡坡地形的流域。由于这些地形原因，KNC将遭受水资源稀缺问题。本研究调查了KNC屋顶雨水收集系统的可行性来缓解水资源稀缺问题。通过使用10年降雨数据估计系统收获的水量。在喀布尔市目前的用水量也估计了不饮用水量的体积。作为案例研究，屋顶雨水收获系统的效率被清除了小学，某些类型的房屋和商业建筑。还基于收获的水量和不饮用水需求之间的平衡来讨论适当尺寸的水收集罐。

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