Tese de Livre Docencia
DOI
Documento
Autor
Nome completo
Lúcia Helena de Oliveira
E-mail
Área do Conhecimento
Data de Defesa
Imprenta
São Paulo, 2018
Pimenta, Paulo de Mattos (Presidente)
Bevilacqua, Luiz
Campello, Eduardo de Morais Barreto
Proenca, Sergio Persival Baroncini
Wriggers, Peter
Título em português
Modelo para a simulação de vazões de projeto em sistemas prediais de água com medição individualizada empregando a lógica nebulosa e o método de Monte Carlo.
Palavras-chave em português
Lógica Fuzzy
Lógica nebulosa
Método de Monte Carlo
Sistema predial de água
Sistemas prediais de água
Vazões de projeto
Resumo em português
Título em inglês
Modeling for simulation of design flow rates in water submetering building systems using fuzzy logic and Monte Carlo method.
Palavras-chave em inglês
Design flow rates
Fuzzy logic
Method Carlo method
Water submetering
Water supply building systems
Resumo em inglês
Nowadays, for ease of calculation and also on the recommendation of NBR 5626 (ABNT, 1998), the design flow rate in water supply systems is determined by the empirical method. Despite being cited in that standard, the probabilistic method has not been used by designers. Several papers have proven the efficiency of the probability method proposed by Gonçalves (1986). It has been considered by researchers of the area the most suitable method because it takes into account the more realistic conditions of each design. These conditions are represented as random variables intervening in the use of the water inside the buildings. Nevertheless, as the usage of some sanitary appliances, in special the shower, depend on the subjective behavior of the users, the aim of this work is to present a model that uses fuzzy logic for fuzzy variables and Monte Carlo method for random variables to achieve a more accurate assessment of design flow rate in water supply system of multifamily buildings. The methodology used was the development of a theoretical model that considers the concepts of the fuzzy logic to determine the duration of the shower as well as Monte Carlo method for the establishment of random starting of the use of sanitary appliances. For the validation of the fuzzy approach, all fixtures of an apartment with three students were monitored during a period of twenty days with the use of a water measurement system in real time. The results of the simulation method were compared with the results obtained by the method recommended by NBR 5626 and with those obtained by the probabilistic model. They showed about 30% smaller than those obtained by NBR 5626 and similar to the probability model, but with the advantage that it shows the behavior of flow rates throughout the peak period and not only the maximum value in a given section.Thus, this model, through more accurate design flow rate values, can contribute not only to obtain more accurate meters, but also for the most appropriate sizing piping and components of the water supply system.

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Data de Publicação
2019-05-23

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