A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation

The utilization of pump as turbines (PATs) within water distribution systems for energy regulation and hydroelectricity generation purposes has increasingly attracted the energy field players’ attention. However, its power production efficiency still faces difficulties due to PAT’s lack of flow cont...
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Autor*in:	Maxime Binama [verfasserIn] Kan Kan [verfasserIn] Hui-Xiang Chen [verfasserIn] Yuan Zheng [verfasserIn] Da-Qing Zhou [verfasserIn] Wen-Tao Su [verfasserIn] Xin-Feng Ge [verfasserIn] Janvier Ndayizigiye [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	flow dynamics numerical simulation pressure pulsation pump as turbine rotational speed

Übergeordnetes Werk:	In: Sustainability - MDPI AG, 2009, 13(2021), 14, p 7998
Übergeordnetes Werk:	volume:13 ; year:2021 ; number:14, p 7998

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/su13147998

Katalog-ID:	DOAJ047822597

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520			\|a The utilization of pump as turbines (PATs) within water distribution systems for energy regulation and hydroelectricity generation purposes has increasingly attracted the energy field players’ attention. However, its power production efficiency still faces difficulties due to PAT’s lack of flow control ability in such dynamic systems. This has eventually led to the introduction of the so-called “variable operating strategy” or VOS, where the impeller rotational speed may be controlled to satisfy the system-required flow conditions. Taking from these grounds, this study numerically investigates PAT eventual flow structures formation mechanism, especially when subjected to varying impeller rotational speed. CFD-backed numerical simulations were conducted on PAT flow under four operating conditions (1.00 Q<sub<BEP</sub<, 0.82 Q<sub<BEP</sub<, 0.74 Q<sub<BEP</sub<, and 0.55 Q<sub<BEP</sub<), considering five impeller rotational speeds (110 rpm, 130 rpm, 150 rpm, 170 rpm, and 190 rpm). Study results have shown that both PAT’s flow and pressure fields deteriorate with the machine influx decrease, where the impeller rotational speed increase is found to alleviate PAT pressure pulsation levels under high-flow operating conditions, while it worsens them under part-load conditions. This study’s results add value to a thorough understanding of PAT flow dynamics, which, in a long run, contributes to the solution of the so-far existent technical issues.
650		4	\|a flow dynamics
650		4	\|a numerical simulation
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650		4	\|a rotational speed
653		0	\|a Environmental effects of industries and plants
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callnumber-first	T - Technology
author	Maxime Binama
spellingShingle	Maxime Binama misc TD194-195 misc TJ807-830 misc GE1-350 misc flow dynamics misc numerical simulation misc pressure pulsation misc pump as turbine misc rotational speed misc Environmental effects of industries and plants misc Renewable energy sources misc Environmental sciences A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation
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topic_title	TD194-195 TJ807-830 GE1-350 A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation flow dynamics numerical simulation pressure pulsation pump as turbine rotational speed
topic	misc TD194-195 misc TJ807-830 misc GE1-350 misc flow dynamics misc numerical simulation misc pressure pulsation misc pump as turbine misc rotational speed misc Environmental effects of industries and plants misc Renewable energy sources misc Environmental sciences
topic_unstemmed	misc TD194-195 misc TJ807-830 misc GE1-350 misc flow dynamics misc numerical simulation misc pressure pulsation misc pump as turbine misc rotational speed misc Environmental effects of industries and plants misc Renewable energy sources misc Environmental sciences
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title	A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation
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title_full	A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation
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author_browse	Maxime Binama Kan Kan Hui-Xiang Chen Yuan Zheng Da-Qing Zhou Wen-Tao Su Xin-Feng Ge Janvier Ndayizigiye
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title_sort	numerical investigation into the pat hydrodynamic response to impeller rotational speed variation
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title_auth	A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation
abstract	The utilization of pump as turbines (PATs) within water distribution systems for energy regulation and hydroelectricity generation purposes has increasingly attracted the energy field players’ attention. However, its power production efficiency still faces difficulties due to PAT’s lack of flow control ability in such dynamic systems. This has eventually led to the introduction of the so-called “variable operating strategy” or VOS, where the impeller rotational speed may be controlled to satisfy the system-required flow conditions. Taking from these grounds, this study numerically investigates PAT eventual flow structures formation mechanism, especially when subjected to varying impeller rotational speed. CFD-backed numerical simulations were conducted on PAT flow under four operating conditions (1.00 Q<sub<BEP</sub<, 0.82 Q<sub<BEP</sub<, 0.74 Q<sub<BEP</sub<, and 0.55 Q<sub<BEP</sub<), considering five impeller rotational speeds (110 rpm, 130 rpm, 150 rpm, 170 rpm, and 190 rpm). Study results have shown that both PAT’s flow and pressure fields deteriorate with the machine influx decrease, where the impeller rotational speed increase is found to alleviate PAT pressure pulsation levels under high-flow operating conditions, while it worsens them under part-load conditions. This study’s results add value to a thorough understanding of PAT flow dynamics, which, in a long run, contributes to the solution of the so-far existent technical issues.
abstractGer	The utilization of pump as turbines (PATs) within water distribution systems for energy regulation and hydroelectricity generation purposes has increasingly attracted the energy field players’ attention. However, its power production efficiency still faces difficulties due to PAT’s lack of flow control ability in such dynamic systems. This has eventually led to the introduction of the so-called “variable operating strategy” or VOS, where the impeller rotational speed may be controlled to satisfy the system-required flow conditions. Taking from these grounds, this study numerically investigates PAT eventual flow structures formation mechanism, especially when subjected to varying impeller rotational speed. CFD-backed numerical simulations were conducted on PAT flow under four operating conditions (1.00 Q<sub<BEP</sub<, 0.82 Q<sub<BEP</sub<, 0.74 Q<sub<BEP</sub<, and 0.55 Q<sub<BEP</sub<), considering five impeller rotational speeds (110 rpm, 130 rpm, 150 rpm, 170 rpm, and 190 rpm). Study results have shown that both PAT’s flow and pressure fields deteriorate with the machine influx decrease, where the impeller rotational speed increase is found to alleviate PAT pressure pulsation levels under high-flow operating conditions, while it worsens them under part-load conditions. This study’s results add value to a thorough understanding of PAT flow dynamics, which, in a long run, contributes to the solution of the so-far existent technical issues.
abstract_unstemmed	The utilization of pump as turbines (PATs) within water distribution systems for energy regulation and hydroelectricity generation purposes has increasingly attracted the energy field players’ attention. However, its power production efficiency still faces difficulties due to PAT’s lack of flow control ability in such dynamic systems. This has eventually led to the introduction of the so-called “variable operating strategy” or VOS, where the impeller rotational speed may be controlled to satisfy the system-required flow conditions. Taking from these grounds, this study numerically investigates PAT eventual flow structures formation mechanism, especially when subjected to varying impeller rotational speed. CFD-backed numerical simulations were conducted on PAT flow under four operating conditions (1.00 Q<sub<BEP</sub<, 0.82 Q<sub<BEP</sub<, 0.74 Q<sub<BEP</sub<, and 0.55 Q<sub<BEP</sub<), considering five impeller rotational speeds (110 rpm, 130 rpm, 150 rpm, 170 rpm, and 190 rpm). Study results have shown that both PAT’s flow and pressure fields deteriorate with the machine influx decrease, where the impeller rotational speed increase is found to alleviate PAT pressure pulsation levels under high-flow operating conditions, while it worsens them under part-load conditions. This study’s results add value to a thorough understanding of PAT flow dynamics, which, in a long run, contributes to the solution of the so-far existent technical issues.
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title_short	A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation
url	https://doi.org/10.3390/su13147998 https://doaj.org/article/077ba30c4d624210a43bace8056012eb https://www.mdpi.com/2071-1050/13/14/7998 https://doaj.org/toc/2071-1050
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author2	Kan Kan Hui-Xiang Chen Yuan Zheng Da-Qing Zhou Wen-Tao Su Xin-Feng Ge Janvier Ndayizigiye
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A Numerical Investigation into the PAT Hydrodynamic Response to Impeller Rotational Speed Variation

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