Arid
DOI10.1016/j.agrformet.2016.02.014
Modeling short wave solar radiation flux in a trench water harvesting system
Agam, Nurit; Leake, Solomon; Berliner, Pedro R.
通讯作者Agam, Nurit
来源期刊AGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
EISSN1873-2240
出版年2016
卷号221页码:152-163
英文摘要

Micro-catchment water harvesting systems are systems by which runoff is collected from a contributing area, stored in an adjacent infiltration basin, and support tree growth during the dry season. Increase of the efficiency of such systems can be achieved by minimizing non-productive water losses, which mainly occur from the impounding area during the period during which free water is available and from the wet soil surface thereafter. Designing the infiltration basin as a trench can potentially meet this goal. The main driver for water loss through evaporation is the flux of short wave radiation that reaches the wetted surface. The first step in developing a comprehensive model to this effect, and the objective of the work reported herein is to model the short wave radiative fluxes for different trench geometries. The model computes the radiation reaching the floor of a trench at each point across the trench width accounting for the direct, diffuse, and reflected components. Model validation indicated that the model accurately depicts the diurnal course of radiation reaching the trench floor in both north-south and east west orientated trenches in both summer and winter. Simulations for the Negev Desert revealed distinct differences in the diurnal course of mean solar radiation reaching the trench floor between north-south and east-west orientations. During the rainy season (November through March) radiation load was found to be greater in the north-south orientation. Thus, aiming to reduce evaporative losses from trench-like runoff harvesting systems in the Negev, east-west orientated trenches are advantageous. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Shortwave radiation Trench orientation Rainwater harvesting Radiation model
类型Article
语种英语
国家Israel
收录类别SCI-E
WOS记录号WOS:000374074200013
WOS关键词URBAN ; AGROFORESTRY ; DESIGN ; CANYON
WOS类目Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191060
作者单位Ben Gurion Univ Negev, Blaustein Inst Desert Res, IL-84105 Beer Sheva, Israel
推荐引用方式
GB/T 7714
Agam, Nurit,Leake, Solomon,Berliner, Pedro R.. Modeling short wave solar radiation flux in a trench water harvesting system[J]. Ben-Gurion University of the Negev,2016,221:152-163.
APA Agam, Nurit,Leake, Solomon,&Berliner, Pedro R..(2016).Modeling short wave solar radiation flux in a trench water harvesting system.AGRICULTURAL AND FOREST METEOROLOGY,221,152-163.
MLA Agam, Nurit,et al."Modeling short wave solar radiation flux in a trench water harvesting system".AGRICULTURAL AND FOREST METEOROLOGY 221(2016):152-163.
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