Performance and Internal Flow of Cross-Flow Fan with Inlet Guide Vane

Fukutomi, Junichiro; Nakamura, Rei

doi:10.1299/jsmeb.48.763

Cited by 32 publications

(19 citation statements)

References 5 publications

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“…Reference [11] designed a digital signal processor controller to adjust the stagger angle of IGVs automatically that optimized the efficiency at any operating condition. To achieve higher pressure and performance enhancement of the fan, Reference [12] investigated the effect of the angle and length of the leading blades on the performance of the cross-flow fan by controlling the pre-rotation of the rotor inlet flow. Furthermore, by installing IGVs at the centrifugal pump inlet, an inevitable pressure loss was induced due to the friction loss on IGVs' surface and the incidence loss on IGVs' leading edge [13].…”

Section: Introductionmentioning

confidence: 99%

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Energy-Saving Performance of Flap-Adjustment-Based Centrifugal Fan

Chen

Xu²,

Zhao

et al. 2018

Energies

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Abstract:The current paper mainly focuses on finding a more appropriate way to enhance the fan performance at off-design conditions. The centrifugal fan (CF) based on flap-adjustment (FA) has been investigated through theoretical, experimental, and finite element methods. To obtain a more predominant performance of CF from the different adjustments, we carried out a comparative analysis on FA and leading-adjustment (LA) in aerodynamic performances, which included the adjusted angle of blades, total pressure, efficiency, system-efficiency, adjustment-efficiency, and energy-saving rate. The contribution of this paper is the integrated performance curve of the CF. Finally, the results showed that the effects of FA and LA on economic performance and energy savings of the fan varied with the blade angles. Furthermore, FA was feasible, which is more sensitive than LA. Moreover, the CF with FA offered a more extended flow-range of high economic characteristic in comparison with LA. Finally, when the operation flow-range extends, energy-saving rate of the fan with FA would have improvement.

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Section: Introductionmentioning

confidence: 99%

“…However, many guide vanes installed in the entrance seem to lower the efficiency of the fan in order to generate the loss of the flow by itself [12]. In particular, when the IGVs' angle exceeded 45 • , the efficiency of the fan decreased obviously, which resulted in lots of wasted energy [14].…”

Section: Introductionmentioning

confidence: 99%

Energy-Saving Performance of Flap-Adjustment-Based Centrifugal Fan

Chen

Xu²,

Zhao

et al. 2018

Energies

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show abstract

“…With the advantage of convenient installation and practical effect, IGVs used in centrifugal compressors have OPEN ACCESS been sufficiently investigated for several decades. The literature on IGV investigations for centrifugal compressors mainly falls into the following categories: effects of IGVs on compressors' energy performances [1][2][3][4][5][6][7][8][9][10][11][12]; design methods and structure parameters of IGVs [2][3][4][5]11]; unsteady interaction between the stationary IGVs and the rotational impeller [6][7][8][9][10][11][12]; and common failure modes of IGVs [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Prewhirl Regulation by Inlet Guide Vanes on Cavitation Performance of a Centrifugal Pump

et al. 2014

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Abstract:The influence of prewhirl regulation by inlet guide vanes (IGVs) on a centrifugal pump performance is investigated experimentally and numerically. The experimental results show that IGVs can obviously change the head and increase the efficiency of the tested centrifugal pump over a wide range of flow rates. Although the cavitation performance is degraded, the variation of the cavitation critical point is less than 0.5 m. Movement of the computed three-dimensional streamlines in suction pipe and impeller are analyzed in order to reveal the mechanism how the IGVs realize the prewhirl regulation. The calculated results show that the influence of IGVs on the cavitation performance of centrifugal pump is limited by a maximum total pressure drop of 1777 Pa, about 7.6% of the total pressure at the suction pipe inlet for a prewhirl angle of 24°.

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“…For compressors, fans, pumps, and so forth, IGV is also used to manipulate their operating load [6][7][8][9][10][11]. Outlet guide vane (OGV) is heavily used at downstream of low pressure turbines, fans, compressors, and pumps, where the rotating velocity can be effectively transformed to static pressure, reducing flowinduced vibration and noise [12][13][14][15][16][17][18][19].…”

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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Performance and Internal Flow of Cross-Flow Fan with Inlet Guide Vane

Cited by 32 publications

References 5 publications

Energy-Saving Performance of Flap-Adjustment-Based Centrifugal Fan

Energy-Saving Performance of Flap-Adjustment-Based Centrifugal Fan

Influence of Prewhirl Regulation by Inlet Guide Vanes on Cavitation Performance of a Centrifugal Pump

A New Proposed Return Guide Vane for Compact Multistage Centrifugal Pumps

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