A scoping review of roof harvested rainwater usage in urban agriculture: Australia and Kenya in focus

Amos, Caleb Christian; Rahman, Ataur; Karim, Fazlul; Gathenya, John Mwangi

doi:10.1016/j.jclepro.2018.08.108

Cited by 60 publications

(36 citation statements)

References 88 publications

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“…Two RWHS behavioral models, yield after spillage (YAS) and yield before spillage (YBS), are commonly used and discussed [27]. The YAS assumes the RHWS supplies the demand after the tank is filled by rain, so there is no access to the rainwater that fell during time t. The YBS assumes that the rainfall enters the tank and is then used [14]. The core of both algorithms is based on the water mass balance model.…”

Section: Hydraulic Simulationmentioning

confidence: 99%

“…The core of both algorithms is based on the water mass balance model. The YAS model is shown by Equation 2, and the YBS model by Equation (3) [14,28]…”

Section: Hydraulic Simulationmentioning

confidence: 99%

“…where: Y t = Yield or water use from storage of system during interval time t Both the YAS and the YBS represent the two extreme scenarios in the RWHS behavior. However, most studies to date have shown that the YAS algorithm has produced better and conservative results, and the YBS algorithm could overestimate the water savings by 10% to 15% [14,28]. Therefore, this study adopted the YAS algorithm in the DSS.…”

Section: Hydraulic Simulationmentioning

confidence: 99%

“…LCCA is commonly used to estimate the overall costs of project alternatives, which may be categorized into a simplified format for the major phases of acquisition, operation, and phase out/disposal as well as their respective stages [1,14,27,[29][30][31][32]. For this, the initial cost of an RWHS setting includes tank cost, pumping, plumbing, and filters.…”

Section: Economic Analysis (Life Cycle Cost Analysis)mentioning

confidence: 99%

“…Worsening urban water stress is a threat to human development. In this context, rainwater harvesting systems (RWHSs) have been recognized as a simple and effective approach to ease water stress in many countries, e.g., Australia, Malaysia, Vietnam, Italy, Portugal, China, Brazil, and Mexico [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Water conservation through RWHSs is also one of the most discussed concepts in arid and semiarid areas [15].…”

Section: Introductionmentioning

confidence: 99%

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Incorporating Rainwater Harvesting Systems in Iran’s Potable Water-Saving Scheme by Using a GIS-Simulation Based Decision Support System

Chiu

Aghaloo

Mohammadi

2020

Water

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Rainwater harvesting systems (RWHSs) have been accepted as a simple and effective approach to ease the worsening of urban water stress. However, in arid and semiarid regions, a comprehensive method for promoting domestic RWHSs in a large-scale water-saving scheme that incorporates water consumption reducing equipment (WCRE) and gray water reuse (GWR), has not been well developed. For this, based on the case study of Guilan Province, Iran, this study addressed the temporal-spatial complex of rainfall and proposed a GIS-simulation-based decision support system (DSS). Herein, two scenarios, i.e., the typical RWHS and the modified RWHS for arid areas, were tested; and the associated economic analysis was performed and compared with WCRE and GWR. Moreover, for larger-scale implementation, the multiple criteria decision making (MCDM) technique was further applied to address the social-environmental complexity of these water-saving methods. Guilan Province has thereby been classified into three priority levels, providing a straightforward understanding of how to promote the large-scale water-saving scheme. Compared with the traditional generalized method, sensitivity analysis verified that this DSS enhanced the information value. Hence, the DSS that provides more holistic and comprehensive support has been identified as a useful tool to ease the threat of urban water stress.

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Section: Hydraulic Simulationmentioning

confidence: 99%

“…The core of both algorithms is based on the water mass balance model. The YAS model is shown by Equation 2, and the YBS model by Equation (3) [14,28]…”

Section: Hydraulic Simulationmentioning

confidence: 99%

Section: Hydraulic Simulationmentioning

confidence: 99%

Section: Economic Analysis (Life Cycle Cost Analysis)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Incorporating Rainwater Harvesting Systems in Iran’s Potable Water-Saving Scheme by Using a GIS-Simulation Based Decision Support System

Chiu

Aghaloo

Mohammadi

2020

Water

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Designing multifunctional urban agroforestry with people in mind

Taylor

Lovell

2021

Urban Agric & Regnl Food Sys

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Urban landscapes combining trees and crops-urban agroforestry (UAF) systemsmay offer greater ecological and cultural benefits than annual cropping systems.Interest in UAF is growing, as evidenced by an increasing number of built projects and articles in the popular press and the academic literature on the subject. However, the practice of UAF appears to far outpace research on its scientific underpinnings or its design. Developing sustainable, resilient UAF sites can be challenging because of biophysical and sociocultural conditions unique to the city; however, cities offer opportunities not found in rural environments including the potential to close open nutrient loops between consumers and sites of food production.We argue that these biophysical and sociocultural challenges and opportunities can be best addressed through an evidence-based approach to the design of UAF systems and a complex ecological aesthetic design language integrating theory, principles, and practices from urban agroecology and allied fields, environmental psychology, and landscape architecture. The resulting multifunctional UAF systems would be socially sustainable and equitable and promote the circular metabolism of the city. Drawing on a purposive review of literature from these disciplines, we propose a preliminary framework consisting of 14 guidelines and complementary principles and strategies for the design of multifunctional, culturally preferred UAF and offer recommendations for future research.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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