Nowadays domestic rainwater harvesting practices are recognized as effective tools to improve the sustainability of drainage systems within the urban environment, by contributing to limiting the demand for potable water and, at the same time, by mitigating the generation of storm water runoff at the source. The final objective of this paper is to define regression curves to size domestic rainwater harvesting (DRWH) systems in the main Italian climatic regions. For this purpose, the Köppen–Geiger climatic classification is used and, furthermore, suitable precipitation sites are selected for each climatic region. A behavioural model is implemented to assess inflow, outflow and change in storage volume of a rainwater harvesting system according to daily mass balance simulations based on historical rainfall observations. The performance of the DRWH system under various climate and operational conditions is examined as a function of two non-dimensional parameters, namely the demand fraction (d) and the modified storage fraction (sm). This last parameter allowed the evaluation of the effects of the rainfall intra-annual variability on the system performance.
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Research Article|
June 01 2013
Designing domestic rainwater harvesting systems under different climatic regimes in Italy
A. Campisano;
1Department of Civil and Environmental Engineering, University of Catania, Viale A. Doria, 6, 95125 Catania, Italy
E-mail: acampisa@dica.unict.it
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I. Gnecco;
I. Gnecco
2Department of Civil, Chemical and Environmental Engineering, University of Genoa, Via Montallegro 1, 16146, Italy
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C. Modica;
C. Modica
1Department of Civil and Environmental Engineering, University of Catania, Viale A. Doria, 6, 95125 Catania, Italy
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A. Palla
A. Palla
2Department of Civil, Chemical and Environmental Engineering, University of Genoa, Via Montallegro 1, 16146, Italy
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Water Sci Technol (2013) 67 (11): 2511–2518.
Article history
Received:
November 14 2012
Accepted:
February 05 2013
Citation
A. Campisano, I. Gnecco, C. Modica, A. Palla; Designing domestic rainwater harvesting systems under different climatic regimes in Italy. Water Sci Technol 1 June 2013; 67 (11): 2511–2518. doi: https://doi.org/10.2166/wst.2013.143
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