Non-dimensional design parameters and performance assessment of rainwater harvesting systems

Palla, Anna; Gnecco, Ilaria; Lanza, Luca G.

doi:10.1016/j.jhydrol.2011.02.009

Cited by 111 publications

(74 citation statements)

References 18 publications

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“…Existem inúmeros trabalhos de pesquisa sobre o dimensionamento de reservatórios de armazenamento para uso em da água pluvial [38][39][40][41][42][43][44], e referências citadas, muitas vezes eles não são comparáveis a dificultada pela enorme disparidade entre as condições e restrições que influenciam e análise do desempenho específicos e as conclusões sobre a eficiência e confiabilidade do sistema, a saber: precipitação anual, área de precipitação total, a capacidade de armazenamento e consumos diários. Para contornar este revés, o conceito de análise não dimensional foi introduzido e aplicado em alguns estudos [38,44].…”

Section: Iv42 Volume Máximo Do Reservatóriounclassified

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Proposal for a rainwater utilization project for non-potable purposes in vertical tank

Silva¹,

Jimenez²,

Andrade³

2016

ITEGAM- Journal of Engineering and Technology for Industrial Applications (ITEGAM-JETIA)

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Water is essential for human survival and also for the entire ecosystem of the planet. The lack of this precious asset will cause irreversible damage to the planet. Many countries are having various problems with the scarcity of drinking water. Some regions of Brazil are facing a water crisis of its natural resource. As an example the city of São Paulo, which recently presented a historic decrease in its reservoirs. Humanity must be aware of the importance of water and its waste. This new culture must be taken immediately, through sustainable renovation of actions to ensure the maintenance and regeneration under appropriate conditions for future generations. The objective of this article is to enable a rainwater collection system, easy to handle, practical for installation, occupying little space and economically viable for the final consumer. The materials presented in a major way was polyvinyl choride (PVC), it is a lightweight material, easy to handle, has a high durability relevant to other materials such as metal pipes and is not reagente to no other kind of material, keeping integrates water quality, without changing it. The methods applied were the steps to progress the proposed project identifying the six steps whose implementation procedures in accordance with current regulations. The expected results are presented as a contribution proposed for sanitation and environmental management, in order to enable solutions that promote the use of rainwater for non-potable purposes with storage vertical tanks for the cities that have monthly precipitation in min (60 mm).Keywords: Rainwater, use, water resources, vertical tank Proposta de projeto de aproveitamento de águas pluviais para fins não potáveis em cisterna vertical RESUMO A água é fundamental para a sobrevivência humana e também para todo o ecossistema do planeta. A falta desse bem tão precioso acarretará prejuízos irreversíveis ao planeta. Muitos países estão tendo diversos problemas com a escassez de água potável. Algumas regiões do Brasil estão enfrentando uma crise hídrica do seu recurso natural, exemplo disso foi à cidade de São Paulo, que recentemente apresentou uma baixa histórica em seus reservatórios. A humanidade precisa se conscientizar da importância da água e do seu desperdício. Essa nova cultura, deve ser tomada de imediato, através de ações de renovação sustentável que garanta a manutenção e regeneração em condições adequadas para as futuras gerações. O objetivo do artigo é viabilizar um sistema de captação de água pluvial, de fácil manuseio, prático na sua instalação, ocupando pouco espaço e viável economicamente para o consumidor final. O material apresentado de forma principal foi o policloreto de polivinila (PVC), pois é um material leve, de fácil manejo, possui uma alta durabilidade pertinente aos outros materiais, como os tubos metálicos e não é reagente a nenhum outro material da natureza, mantendo integra a qualidade da água, sem alterá-la. Os métodos aplicados foram às etapas para evolução do projeto proposto identificando...

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Section: Iv42 Volume Máximo Do Reservatóriounclassified

“…Para contornar este revés, o conceito de análise não dimensional foi introduzido e aplicado em alguns estudos [38,44].…”

Section: Iv42 Volume Máximo Do Reservatóriounclassified

Proposal for a rainwater utilization project for non-potable purposes in vertical tank

Silva¹,

Jimenez²,

Andrade³

2016

ITEGAM- Journal of Engineering and Technology for Industrial Applications (ITEGAM-JETIA)

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“…When spillage does occur, this option effectively decreases the tank capacity and, thus, underestimates the amount of water which can be supplied by the tank. For this approach the following equations can be used to determine the yield from the tank and the volume of water in the tank (Liaw & Tsai 2004;Palla et al 2011): …”

Section: Yield-after-spill and Yield-before-spillmentioning

confidence: 99%

“…This has the opposite effect on the tank capacity and thus overestimates the water which can be supplied by the tank. This approach is described by the following equations (Liaw & Tsai 2004;Palla et al 2011):…”

Section: Yield-after-spill and Yield-before-spillmentioning

confidence: 99%

A proposal for the probabilistic sizing of rainwater tanks for constant demand

Allen¹,

Haarhoff²

2015

J. S. Afr. Inst. Civ. Eng.

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In recent years there has been an international trend towards installing rainwater tanks in an attempt to save water. This study investigates the possibility of simplifying the process of sizing a rainwater tank for optimal results under constant water demand. The required size of a rainwater tank is influenced by the Mean Annual Precipitation, the size of the roof which is being used for harvesting, the water demand, the desired certainty of supply and the rainfall patterns. The study investigates the use of a generalised equation of the form y = a(x - 1)b + c, where x is a runoff parameter, y is a storage parameter and a, b and c are constants which differ for each location, depending on rainfall characteristics. Results obtained using the generalised equation are compared to results obtained by simulating tank behaviour over a 16-year period (1994-2009) at three rainfall stations. The results suggest that such an equation can be used to estimate the storage capacity of a rainwater tank.

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“…In particular, several literature studies developed in various countries point out the high potential of domestic RWH systems to meet non-potable water demands in private and public buildings [4][5][6][7]. Typical RWH systems consider rainwater reclamation from building rooftops, storage within a tank, and use of the harvested rainwater for a number of non-potable indoor uses (e.g., flushing of toilets, laundry, etc.)…”

Section: Introductionmentioning

confidence: 99%

Water Saving and Cost Analysis of Large-Scale Implementation of Domestic Rain Water Harvesting in Minor Mediterranean Islands

Campisano

D’Amico

Modica

2017

Water

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This paper describes a novel methodology to evaluate the benefits of large-scale installation of domestic Rain Water Harvesting (RWH) systems in multi-story buildings. The methodology was specifically developed for application to small settlements of the minor Mediterranean islands characterized by sharp fluctuations in precipitation and water demands between winter and summer periods. The methodology is based on the combined use of regressive models for water saving evaluation and of geospatial analysis tools for semi-automatic collection of spatial information at the building/household level. An application to the old town of Lipari (Aeolian islands) showed potential for high yearly water savings (between 30% and 50%), with return on investment in less than 15 years for about 50% of the installed RWH systems.

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Non-dimensional design parameters and performance assessment of rainwater harvesting systems

Cited by 111 publications

References 18 publications

Proposal for a rainwater utilization project for non-potable purposes in vertical tank

Proposal for a rainwater utilization project for non-potable purposes in vertical tank

A proposal for the probabilistic sizing of rainwater tanks for constant demand

Water Saving and Cost Analysis of Large-Scale Implementation of Domestic Rain Water Harvesting in Minor Mediterranean Islands

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