Installation of an axial Pump-as-Turbine (PaT) in a wastewater sewer of an oil refinery: A case study

Rossi, Mosé; Rudolf, Pavel; Štefan, David; Nigro, Alessandra

doi:10.1016/j.apenergy.2019.05.052

Cited by 43 publications

(22 citation statements)

References 41 publications

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“…In 2018, a novel method for real-time data validation was developed in the ORI using sensor data from the power and petrochemical plants of refining processes [12]. Finally, an energy recovery solution is offered for the pump-as-turbine technology applied in the ORI in 2019 [13].…”

Section: Literature Reviewmentioning

confidence: 99%

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Integration of Joint Power-Heat Flexibility of Oil Refinery Industries to Uncertain Energy Markets

Golmohamadi

Asadi

2020

Energies

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This paper proposes a novel approach to optimize the main energy consumptions of heavy oil refining industries (ORI) in response to electricity price uncertainties. The whole industrial sub-processes of the ORI are modeled mathematically to investigate the joint power-heat flexibility potentials of the industry. To model the refinery processes, an input/output flow-based model is proposed for five main refining units. Moreover, the role of storage tanks capacity in the power system flexibility is investigated. To hedge against the electricity price uncertainty, an uncertain bound for the wholesale electricity price is addressed. To optimize the industrial processes, a dual robust mixed-integer quadratic program (R-MIQP) is adopted; therefore, the ORI’s operational strategies are determined under the worst-case realization of the electricity price uncertainty. Finally, the suggested approach is implemented in the south-west sector of the Iran Energy Market that suffers from a lack of electricity in hot days of summer. The simulation results confirm that the proposed framework ensures industrial demand flexibility to the external grids when a power shortage occurs. The approach not only provides demand flexibility to the power system, but also minimizes the operation cost of the industries.

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Section: Literature Reviewmentioning

confidence: 99%

“…Note that [I] i×i is an identity matrix, which is the i × i square matrix with ones on the main diagonal and zeros elsewhere. Equality (13) ensures the material flow balance in the SRP units. In this way, the total input flow to the SRP must be equal to the summation of input flows to i refinery units.…”

Section: Formulation Of Oil Refinery Industrymentioning

confidence: 99%

Integration of Joint Power-Heat Flexibility of Oil Refinery Industries to Uncertain Energy Markets

Golmohamadi

Asadi

2020

Energies

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“…Barbarelli et al, [25] experimentally studied 27 radial flow PAT, obtaining mathematical relations that predict its behavior. Also, the characteristic curve has been generated, showing that, as the pump flow increases, the head and the power generated increase, but the efficiency decreases [26,27]. Delgado et al, [28] found that the efficiency of the machine improves when working at variable speed.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Curve Prediction of a Commercial Centrifugal Pump Operating as a Turbine Through Numerical Simulations

Vásquez

Graciano-Uribe

Río

2021

ARFMTS

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In this work, we seek to predict the characteristic curve of a commercial centrifugal radial flow pump operating as a turbine, applying a novel methodology based on the state of the art. Initially, the characteristic curve in pump mode is validated through numerical simulations. The results obtained are approximate to the points awarded by the manufacturer, with an error of less than 7% at the best efficiency point. Subsequently, the characteristic curve is generated in turbine mode, obtaining an error of less than 10% respect to mathematical model. Then, velocity and pressure contours are evaluated to validate the fluid dynamic behavior. Finally, the site operating conditions for electricity generation are obtained. With this, it is proposing a methodology for the selection of these turbomachines, applying an economic technology for zones that do not have access to the electrical energy, since it was not found a method that is being applied for its correct election in the hydroelectric generation at low scale.

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“…Recent research and projects are also trying to integrate this technology either within the urban environments, e.g. PATs to be installed in typical Water Distribution Networks (WDN) [15,16] or in particular applications, such as an oil refinery [17]. Some studies focused on the role of the flow-rate variability existing in pipelines where the PAT is supposed to be installed.…”

Section: Introductionmentioning

confidence: 99%

Hydropower Generation Through Pump as Turbine: Experimental Study and Potential Application to Small-Scale WDN

Postacchini

Darvini

Finizio

et al. 2020

Water

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Pump-As-Turbine (PAT) technology is a smart solution to produce energy in a sustainable way at small scale, e.g., through its exploitation in classical Water Distribution Networks (WDNs). PAT application may actually represent a suitable solution to obtain both pressure regulation and electrical energy production. This technology enables one to significantly reduce both design and maintenance costs if compared to traditional turbine applications. In this work, the potential hydropower generation was evaluated through laboratory tests focused on the characterization of a pump working in reverse mode, i.e., as a PAT. Both hydrodynamic (pressure and discharge) and mechanical (rotational speed and torque) conditions were varied during the tests, with the aim to identify the most efficient PAT configurations and provide useful hints for possible real-world applications. The experimental findings confirm the good performances of the PAT system, especially when rotational speed and water demand are, respectively, larger than 850 rpm and 8 L/s, thus leading to efficiencies greater than 50%. Such findings were applied to a small municipality, where daily distribution of pressure and discharge were recorded upstream of the local WDN, where a Pressure Reducing Valve (PRV) is installed. Under the hypothesis of PRV replacement with the tested PAT, three different scenarios were studied, based on the mean recorded water demand and each characterized by specific values of PAT rotational speed. The best performances were observed for the largest tested speeds (1050 and 1250 rpm), which lead to pressure drops smaller than those actually due to the PRV, thus guaranteeing the minimum pressure for users, but also to mechanical powers smaller than 100 W. When a larger mean water demand is assumed, much better performances are reached, especially for large speeds (1250 rpm) that lead to mechanical powers larger than 1 kW combined to head drops a bit larger than those observed using the PRV. A suitable design is thus fundamental for the real-world PAT application.

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Installation of an axial Pump-as-Turbine (PaT) in a wastewater sewer of an oil refinery: A case study

Cited by 43 publications

References 41 publications

Integration of Joint Power-Heat Flexibility of Oil Refinery Industries to Uncertain Energy Markets

Integration of Joint Power-Heat Flexibility of Oil Refinery Industries to Uncertain Energy Markets

Characteristic Curve Prediction of a Commercial Centrifugal Pump Operating as a Turbine Through Numerical Simulations

Hydropower Generation Through Pump as Turbine: Experimental Study and Potential Application to Small-Scale WDN

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