SISTEMAS DE APROVEITAMENTO DE ÁGUA PLUVIAL DURANTE A FASE DE USO: ESTUDO DE CASO EM UMA ESCOLA
DOI:
https://doi.org/10.46421/entac.v18i.1261Keywords:
Rainwater harvesting, Computational simulation, Reliability, Financial analysisAbstract
The objective of this work was to evaluate the performance of a rainwater harvesting system in a school. The water consumptions of one year before and after the installation of the system were compared on a monthly basis. The actual installed system was simulated using the software Netuno considering the rainfall data from the year of operation in order to verify the performance of the system. Results showed that the actual potential for potable water savings is 28.9%, while such a potential was predicted to be 2.7%. Finally, a financial analysis was performed considering the actual cost of the system as well as the interest rate and inflation over the year of operation considered. The payback period was 24 months and the internal rate of return was 9.39% per month. Therefore, the system presented water savings higher than predicted in the design stage and it was considered financially feasible.
References
ABNT. NBR 15527:2019. Aproveitamento de água de chuva de coberturas para fins não potáveis — Requisitos. 2019.
ANA. AGÊNCIA NACIONAL DE ÁGUA. Portal HidroWeb. Disponível em: < http://www.snirh.gov.br/hidroweb/serieshistoricas >. Acesso em: 02 jun. 2020.: 2020.
BRASIL, (National Water Agency). Brazilian Water Resources Report. 2018.
CAMPISANO, A. et al. Potential for peak flow reduction by rainwater harvesting tanks. In: 2014, Procedia Engineering. 2014.
CASAN. Tabela Tarifária 2018. Disponível em: https://www.casan.com.br/ckfinder/userfiles/files/Documentos_Download/publica%C3%A7%C3%A3o%20Tabela%20Tarif%C3%A1ria%202018.pdf. Acesso em 08/06/2020. 2018.
CELESC. Tarifas de consumo de energia. Disponível em: https://www.celesc.com.br/tarifasde-energia#tarifas-vigentes. Acesso em 08/06/2020. 2018.
GHISI, Enedir. Parameters influencing the sizing of rainwater tanks for use in houses. Water Resources Management, v. 24, n. 10, p. 2381–2403, 2010.
GHISI, Enedir. Frontiers in Civil Engineering - Volume 2 - Water Savings in Buildings. Bentham Science, 2017. E-book.
JONES, Matthew P.; HUNT, William F. Performance of rainwater harvesting systems in the southeastern United States. Resources, Conservation and Recycling, v. 54, n. 10, p. 623–629, 2010.
MEC. Instituto Nacional de Estudos e Pesquisas Educacionais (Inep). Censo da Educação Superior: Sinopse Estatística. Disponível em:< http://www.inep.gov.br/>. 2018.
RAHMAN, Ataur; KEANE, Joseph; IMTEAZ, Monzur Alam. Rainwater harvesting in Greater Sydney: Water savings, reliability and economic benefits. Resources, Conservation and Recycling, v. 61, p. 16–21, 2012.
RUPP, Ricardo Forgiarini; MUNARIM, Ulisses; GHISI, Enedir. Comparação de métodos para dimensionamento de reservatórios de água pluvial. Ambiente Construído. v.11, n. 4, p. 47–64, 2011.
SANTOS, C.; TAVEIRA-PINTO, F. Analysis of different criteria to size rainwater storage tanks using detailed methods. Resources, Conservation and Recycling, v. 71, p. 1–6, 2013.
GERALDI, Matheus; GHISI, Enedir. Assessment of the length of rainfall time series for rainwater harvesting in buildings. Resources, Conservation and Recycling,v.133, p.231–241, 2018.
SOUZA, Eduardo Leite; GHISI, Enedir. Potable water savings by using rainwater for nonpotable uses in houses. Water (Switzerland), v. 4, n. 3, p. 607–628, 2012.
SUMMER, G. Precipitation: process and analysis. Chichester. 1988. E-book.
THIESEN, Stephanie; GERALDI, Matheus Soares; KAESTNER, Camile Luana. Simulador online para dimensionamento otimizado de reservatório de água da chuva associado à economia financeira. XXII Simpósio Brasileiro de Recursos Hídricos, p. 1–8, 2017.
WARD, S.; MEMON, F. A.; BUTLER, D. Rainwater harvesting: Model-based design evaluation.
Water Science and Technology, v. 61, n. 1, p. 85–96, 2010.
WARD, S.; MEMON, F. A.; BUTLER, D. Performance of a large building rainwater harvesting system. Water Research, v. 46, n. 16, p. 5127–5134, 2012.
WILLIS, Rachelle M. et al. Quantifying the influence of environmental and water conservation attitudes on household end use water consumption. Journal of Environmental Management, v. 92, n. 8, p. 1996–2009, 2011.
