Pump-as-turbine for energy recovery in municipal water supply networks. A review

Souza, Davi Edson Sales e; Mesquita, André Luiz Amarante; Blanco, Cláudio José Cavalcante

doi:10.1007/s40430-021-03213-z

Cited by 12 publications

(7 citation statements)

References 118 publications

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“…3, all the typical operating modes of reversible hydraulic turbomachines in the turbine quadrant. This quadrant is essential in the characterization of a pump since the fact that there is data in this quadrant demonstrates the possibility of using the pumps as a turbine for recovery energy [27][28][29].…”

Section: Results and Analysismentioning

confidence: 99%

Hydrodynamic and experimental characterization of pumps as turbines

Tobón-Espinosa,

Mejía-Ocampo,

Moreno-Sánchez

et al. 2023

DYNA

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To estimate the performance, efficacy, modes of operation, hydrodynamic instabilities, and methodologies for harnessing energy from the pump as turbine (PAT), it is necessary to characterize these hydraulic turbomachines in all their modes of operation using an experimental test rig that simulates actual operating conditions. In this process, the characteristic curve of four quadrants of a turbomachine is constructed, especially its five modes: pump mode, brake pump mode, turbine mode, brake turbine mode, and reverse pump mode. In addition, with dynamic sensors installed in the pump volute, it is possible to know the hydrodynamic phenomena within PAT, finding its average behavior and frequency response, which is a tool for diagnosing the machine’s condition.

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Section: Results and Analysismentioning

confidence: 99%

Hydrodynamic and experimental characterization of pumps as turbines

Tobón-Espinosa,

Mejía-Ocampo,

Moreno-Sánchez

et al. 2023

DYNA

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“…As relações do método são descritas pelas Equações 1, 2, 3, 4 e 5, onde φ é o coeficiente de vazão, ψ é o coeficiente de altura, η é a eficiência, Q é a vazão em [m³/s], H é a altura em [m], g é a aceleração da gravidade [m/s²]. Estudo de caso O método conjunto proposto nesse artigo, foi aplicado em uma rede de distribuição de (RDA) simulada por Souza et al (2021). Nesse estudo, os autores simularam hidraulicamente uma rede que opera no município de Tucuruí, Amazônia Brasileira.…”

Section: Materials E Métodos Modelos Para Predição Da Operação De Bom...unclassified

“…Nem sempre é financeiramente vantajoso substituir um VRP por uma bomba operando inversamente (Souza et al, 2021). Na verdade, a pouca energia dissipada por uma válvula leva a seleção de um BFT de tamanho menor para o controle da pressão na rede em certas horas do dia, aumentando, significativamente, as perdas de água por vazamentos e o desperdício de energia elétrica.…”

Section: Materials E Métodos Modelos Para Predição Da Operação De Bom...unclassified

Predição De Operação De Bombas Como Turbina E Sua Aplicação Para Recuperação De Energia Em Sistemas De Distribuição De Água

Ducati

Sousa

Souza

et al. 2023

Rev. AIDIS ing. cienc. ambient.

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As bombas funcionando como turbinas (BFT) são uma alternativa sustentável para geração de energia aproveitando o potencial hidráulico de um local. Entretanto, dificuldades são encontradas na predicação da curva característica em modo turbina para pontos de operação fora da condição nominal, a partir de curvas fornecidas pelos fabricantes de bombas. Este trabalho tem como propósito prever a faixa de operação de BFT de bombas selecionadas para funcionar como válvulas redutoras de pressão (VRP) no sistema de abastecimento de água (SAA) da Vila Permanente, em Tucuruí – Pará, Brasil. Avaliaram-se três estudos experimentais para a previsão de altura (Ht) e vazão (Qt) de BFTs no modo turbina no melhor ponto de eficiência (BEP). Em seguida, aplicou-se um segundo método que considera toda faixa de operação da BFT, combinado com os métodos no BEP para obter curvas características QxH (vazão x altura) e Qxη (vazão x eficiência) da BFT. Com os valores de altura e vazão dos pontos de pressão no SAA em estudo, selecionaram-se bombas centrífugas para funcionar como turbinas, aplicando a melhor combinação de método e obtendo as curvas características da BFT no modo turbina, de modo a obter a faixa de operação da BFT, além dos cálculos de recuperação parcial de energia com valores em

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“…The prediction models are classified broadly in two types as: the single point prediction model and the complete characteristic curve prediction model of PAT from pump characteristic curves. The single point prediction model proposes the prediction of the best efficiency point (BEP) of PAT (single point on PAT characteristics curve) from the BEP of the pump mode data which are chronologically summarized by Souza et al (2021); few of them are highlighted in this work. Though it seems to be simple as data of only one point (BEP) need to be predicted it is very difficult to find the model which will be reliable and applicable for wide range of the specific speed of pump within 10 % deviation.…”

Section: Introductionmentioning

confidence: 99%

Prediction Model for Complete Characteristic of Pump as Turbine by Hybrid Approach Using Ensemble Regression Model and Polynomial Regression

Painter,

Dhamija,

Doshi

et al. 2023

Preprint

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Centrifugal pumps operated in reverse mode (popularly called pump as turbine (PAT)) are well-established as green energy converters, mainly used in micro-hydro applications due to their lower capital cost. However, the appropriate selection of the pump for reverse-mode application is a critical issue due to not availability of its characteristic curve. Therefore, various researchers have proposed models to prediction PAT parameters from pump characteristics based on diverse approaches. Still, there is hardly any model which can predict the head and flow rates for the PAT with less than 20 % deviation in both of them. This work proposes a novel approach to predict the characteristics of PAT with the integration of ensemble regression modelling for Best Efficiency Point (BEP) and from it, by polynomial equations complete characteristics curve. The data from in-house experiments and open literatures were used to develop the proposed model excluding the data of four-pumps, which are typically used for validation of this proposed model. The predicted parameters of PAT from pump characteristics show good agreement for four selected PATs with less than 10% maximum deviation. Compared to the literature prediction models, it shows a lower deviation for same 4 PATs. A case study based on the field data is carried out to justify the applicability. It reveals that by using this model selected pump when operated in PAT will produce higher power and generate more revenue compared to literature models. Though the difference is lower, for a large number of PATs it will be significantly higher.

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Pump-as-turbine for energy recovery in municipal water supply networks. A review

Cited by 12 publications

References 118 publications

Hydrodynamic and experimental characterization of pumps as turbines

Hydrodynamic and experimental characterization of pumps as turbines

Predição De Operação De Bombas Como Turbina E Sua Aplicação Para Recuperação De Energia Em Sistemas De Distribuição De Água

Prediction Model for Complete Characteristic of Pump as Turbine by Hybrid Approach Using Ensemble Regression Model and Polynomial Regression

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