Energy saving in a deep well pump with splitter blade

Gölcü, Mustafa; Pancar, Yaşar; Sekmen, Yakup

doi:10.1016/j.enconman.2005.05.001

Cited by 56 publications

(26 citation statements)

References 5 publications

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“…3a, concerning b.e.p, the head increases with an increase in the number of blades and blade discharge angle. The results obtained from the experiments are in conformity with the results provided in the literature (Yuan, 1997;Yuan et al 1993;Gölcü, 2001;Gölcü, 2005;Gölcü, 2006a,b;Gölcü and Pancar, 2006;Gölcü et al 2007;Li, 2012). Although an increase in the blade discharge angle leads to an increase in the head, it also increases the power consumed by the pump (Fig.…”

Section: Characteristics Of Impellers Without Splitter Bladessupporting

confidence: 81%

Effects of Blade Discharge Angle, Blade Number and Splitter Blade Length on Deep Well Pump Performance

Korkmaz

Gölcü

Kurbanoğlu

2017

JAFM

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ĄBSTRACTImpellers with splitter blades are used for pumps and compressors in the design of turbomachines. Design parameters such as the number of blades, blade discharge angle and impeller discharge diameter impact affect pump performance and energy consumption. In this study, the effect of the number of blades (z=5, 6, and 7), blade discharge angles (β2b=25, and β2b=35) and splitter blade lengths (40, 55, 70, and 85% of the main blade length) on Deep Well Pump (DWP) performance has been studied experimentally. In the experiments, pump casing, blade inlet angle, blade thickness, blade width and impeller inlet and discharge diameters have been kept fixed while other parameters such as the number of blades, blade discharge angles and splitter blade lengths have been allowed to vary. As a result of the experimental study, the highest efficiency of all the impellers for best efficiency point (b.e.p) has been obtained on the impeller with the number of blades z=6, blade discharge angle 2b=25 and 85% splitter blade addition compared to impellers without splitter blades.

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Section: Characteristics Of Impellers Without Splitter Bladessupporting

confidence: 81%

Effects of Blade Discharge Angle, Blade Number and Splitter Blade Length on Deep Well Pump Performance

Korkmaz

Gölcü

Kurbanoğlu

2017

JAFM

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“…Other works in literature [10,11,12,13,14,15,16] found improvements partially caused by a reduction of flow separation within the blade passage and partially to an increase in the average flow angle at the trailing edge. Besides beneficial effects, also drawbacks of the application of splitter blades have been found.…”

Section: Splittered Impellermentioning

confidence: 99%

“…Design guidelines have been proposed by Gülich [3], Cavazzini et al [17] and Japikse [5], including indications on how to select the total number of blades, the meridional position of splitters and the impeller design. Several works in literature [10,11,12,13,14,15,16] indicate that the circumferential position, the length and the blade angle distributions are the most critical design parameters for splitter blades.…”

Section: Splittered Impellermentioning

confidence: 99%

Design Optimization of Splitter Blades for Rocket Engine Turbopump

Torre

Konno

Lettieri

et al. 2018

Volume 2D: Turbomachinery

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In this paper we present and validate a shape optimization framework for the design of splitter blades that extends the operative range under cavitation while maintaining the wetted performance of rocket engine turbopumps. For a target turbopump application, the optimization framework allows for independent changes to the blade angle distributions across the span and to the pitchwise position of the splitter blades while preserving the thickness distributions. The optimization is conducted with a surrogate-based gradient method. The geometry is optimized at a fixed cavitation number corresponding to a 5% head coefficient dropoff, while constraints are imposed on the wet pump performance. It is found that this approach, coupled with the optimal design points distribution provided by the Design of Experiment method, reduces the computational cost of the optimization process by minimizing the number of multiphase calculations. The numerical results suggest that the optimized splitter blades successfully increase the pump operative range by 2.2% and increase the head coefficient by 5.3% compared to the baseline case with non-optimized splitters. These results are corroborated by experiments conducted in a closed-loop water test facility. Several pump geometries are tested through rapid prototyping using additive manufacturing. The experimental data validate the optimization framework, demonstrating a 4.7% increase of pump operative range and a 7.6% increase in head coefficient. The calculations are used to gain insight in the physical mechanisms for the performance improvement. The analysis of the results indicates that the improved performance is due to the optimized position and shape of the splitter blades which increase the pump slip factor.

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“…So light weight and mobility are the most important factors concerned by the customers, challenging the former structure of multistage centrifugal pumps [33]. In this study, the difference between former pump structure and compact pump structure is firstly analyzed.…”

Section: Introductionmentioning

confidence: 99%

A New Proposed Return Guide Vane for Compact Multistage Centrifugal Pumps

Zhang

Shi

et al. 2013

International Journal of Rotating Machinery

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For widely used multistage centrifugal pumps, their former structures are so bulky that nowadays growing interest has been shifted to the development of more compact structures. Following this trend, a compact pump structure is provided and analysed. To maintain the pump's pressure recovery, as well as to meet the water flow from the impeller, a circumferential twisted return guide vane (RGV) is proposed. To validate this design method, the instantaneous CFD simulations are performed to investigate the rotorstator interventions. Within the impeller, the pressure fluctuation is cyclic symmetry, where the impeller frequency dominates. At the zone where flow leaves impeller for RGV, the pressure fluctuation is nonperiodic, the impeller frequency is major, and the rotation frequency is secondary. Within RGV, the periodic symmetric fluctuation is recovered, where the rotation frequency is governing. The fluctuation decreases from seven cycles within impeller to two cycles within RGV, indicating that the flow from impeller is well handled by RGV. To examine the pump's performance, a prototype multistage pump is designed. The testing shows that the pump efficiency is 57.5%, and the stage head is 9 m, which is comparable to former multistage centrifugal pumps. And this design is more advantageous in developing compact multistage centrifugal pumps.

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Energy saving in a deep well pump with splitter blade

Cited by 56 publications

References 5 publications

Effects of Blade Discharge Angle, Blade Number and Splitter Blade Length on Deep Well Pump Performance

Effects of Blade Discharge Angle, Blade Number and Splitter Blade Length on Deep Well Pump Performance

Design Optimization of Splitter Blades for Rocket Engine Turbopump

A New Proposed Return Guide Vane for Compact Multistage Centrifugal Pumps

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