Improving energy efficiency of individual centrifugal pump systems using model-free and on-line optimization methods

Hieninger, Thomas; Schmidt-Vollus, Ronald; Schlücker, Eberhard

doi:10.1016/j.apenergy.2021.117311

Cited by 9 publications

(3 citation statements)

References 29 publications

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“…As a < 0, Eq. ( 6) shows that sign(b) = sign(Q m ) for b ∈ R. 1 Finally, for all pumps and other machines that give in energy to the fluid, H P 0 > 0.…”

Section: Characteristic Curves and Their Maximamentioning

confidence: 95%

“…Therefore, there is a need to guarantee high and safe levels of power supply. Being among the most important economic activities, water pumping systems account for a high percentage of electrical energy consumption [1]. More than 20% of the global electric motors energy consumption is due to pumps [2,3], indicating the need for close attention to the proper selection, operation, and maintenance of this equipment for optimal use of energy.…”

Section: Introductionmentioning

confidence: 99%

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A preliminary investigation on the operational efficiency of centrifugal pumps operating in single-branch, single-pump systems

Pellegrini,

Pedrera-Yanes,

Llanes-Santiago

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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Pumping systems are among the most energy-consuming applications, making its efficient operation a matter of great relevance. In recent years, efforts to improve the efficiency of these systems have followed two approaches. The first involves the design and development of new efficient pump models, in studies primarily based on the internal flow behaviour and impeller geometrical parameters. This approach, albeit useful, does not consider whether these efficient pump models have been correctly selected. The second approach addresses the energy-saving potential achievable through the pumping system itself, including the proper pump selection, which is a research area that still offers opportunities for improvement. The primary objective of this work is to create a methodology to identify whether a pump has been efficiently selected for a given hydraulic system. To achieve this, the two main criteria currently used for evaluating the efficient selection of pumps are discussed: the POR-Q and the POR-η. The results demonstrate that the proposed methodology correctly identifies high-efficiency pumps for operating in a given system. It is shown that the flow rate interval where the pump can operate with high efficiency, as determined by the POR-η criterion, is wider than the interval obtained using the POR-Q criterion. This expansion in the available 1 range of pump operation using the POR-η criterion allows for greater availability of pumps that meet the system requirements and respond well to energy-saving strategies. This finding enables a wider choice of pumps, thereby facilitating the decision-making process.

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“…As a < 0, Eq. ( 6) shows that sign(b) = sign(Q m ) for b ∈ R. 1 Finally, for all pumps and other machines that give in energy to the fluid, H P 0 > 0.…”

Section: Characteristic Curves and Their Maximamentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

A preliminary investigation on the operational efficiency of centrifugal pumps operating in single-branch, single-pump systems

Pellegrini,

Pedrera-Yanes,

Llanes-Santiago

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…The convective term was discretized by "High resolution". "Automatic wall function" and "No slip wall" were employed for all walls (Menter, 1994;Menter et al, 2003;Hieninger et al, 2021). The number of iterative steps was set to 1,000 and the convergence criterion was set to 10 −5 .…”

Section: Original Model and Geometric Parameter Definitionmentioning

confidence: 99%

Mixed-flow pump performance improvement based on circulation method

et al. 2023

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Mixed-flow pumps have been extensively employed in daily life, improving their energy characteristics contribute to the reduction of energy consumption worldwide. In this study, to overcome the decrease of optimization upper limit caused by using a single type of parameter as the design parameter, a typical mixed-flow pump was chosen for study, and its impeller was parameterized by five geometric and eight hydrodynamic parameters. With head and efficiency as the constraint and optimization objective respectively, 27 schemes were constructed by the Taguchi method. The influence of design factors to the objective and constraint was analyzed based on range and regression analysis. The optimization mechanism was elucidated using the entropy production method. The result reveals that the geometric and hydrodynamic parameters have a significantly impact on the mixed-flow pump’s energy characteristics. The optimized model head is 12.43m, which meets the constraints, while the efficiency increases by 3.2%–88.51%. Therefore, considering both geometric and hydrodynamic parameters in the mixed-flow pump optimization is workable and necessary. This paper can provide practical instructions on the optimal design of different turbomachines.

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Optimization of pump transient energy characteristics based on response surface optimization model and computational fluid dynamics

Li,

Yang,

Yang

et al. 2024

Applied Energy

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Improving energy efficiency of individual centrifugal pump systems using model-free and on-line optimization methods

Cited by 9 publications

References 29 publications

A preliminary investigation on the operational efficiency of centrifugal pumps operating in single-branch, single-pump systems

A preliminary investigation on the operational efficiency of centrifugal pumps operating in single-branch, single-pump systems

Mixed-flow pump performance improvement based on circulation method

Optimization of pump transient energy characteristics based on response surface optimization model and computational fluid dynamics

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