Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps

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ŽVAB, Gregor ;LAPUH, Gregor .
Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 64, n.9, p. 566-576, october 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/sl/article/experimental-hydraulic-analysis-of-intake-structure-for-cooling-towers-pumps/>. Date accessed: 17 sep. 2021. 
doi:http://dx.doi.org/10.5545/sv-jme.2018.5262.
Žvab, G., & Lapuh, G.
(2018).
Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps.
Strojniški vestnik - Journal of Mechanical Engineering, 64(9), 566-576.
doi:http://dx.doi.org/10.5545/sv-jme.2018.5262
@article{sv-jmesv-jme.2018.5262,
	author = {Gregor  Žvab and Gregor  Lapuh},
	title = {Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {64},
	number = {9},
	year = {2018},
	keywords = {intake structures, physical hydraulic model, free surface flow, free surface vortices, vertical pump},
	abstract = {Experimental hydraulic analysis of troubleshooting intake structures for cooling towers (CT) pumps in nuclear power plant are presented in this paper. The formation of the free surface vortex in the pump sump with unfavorable intensity was not acceptable for the safe operation of the cooling towers pump and the cooling system in general. The objective of the present study is to investigate and improve hydraulic flow conditions in intake structure of CT pumping stations within acceptable criteria of the ANSI/HI standard experimentally. For this purpose, the physical hydraulic model with the scale factor 16 was made. Boundary conditions were calculated by dimensional analysis with the Froude number. The vorticity of flow in the suction pipe of the model pumps was measured and free surfaces and submerged vortices were observed. The model tests were made for all operating conditions of pumps. Comparison between the model and prototype showed a good agreement by the formation of an identical free surface vortex in the same area of the sump. In order to prevent the formations of the unfavorable free surface vortex, the geometry of intake structures with the additional elements and obstacles were modified. Measured and observed results for additional tests have been obtained. The optimized geometry of intake structures provided favorable flow conditions by safety factor 1.5 within acceptable criteria of the ANSI/HI standard.},
	issn = {0039-2480},	pages = {566-576},	doi = {10.5545/sv-jme.2018.5262},
	url = {https://www.sv-jme.eu/sl/article/experimental-hydraulic-analysis-of-intake-structure-for-cooling-towers-pumps/}
}
Žvab, G.,Lapuh, G.
2018 October 64. Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 64:9
%A Žvab, Gregor 
%A Lapuh, Gregor 
%D 2018
%T Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps
%B 2018
%9 intake structures, physical hydraulic model, free surface flow, free surface vortices, vertical pump
%! Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps
%K intake structures, physical hydraulic model, free surface flow, free surface vortices, vertical pump
%X Experimental hydraulic analysis of troubleshooting intake structures for cooling towers (CT) pumps in nuclear power plant are presented in this paper. The formation of the free surface vortex in the pump sump with unfavorable intensity was not acceptable for the safe operation of the cooling towers pump and the cooling system in general. The objective of the present study is to investigate and improve hydraulic flow conditions in intake structure of CT pumping stations within acceptable criteria of the ANSI/HI standard experimentally. For this purpose, the physical hydraulic model with the scale factor 16 was made. Boundary conditions were calculated by dimensional analysis with the Froude number. The vorticity of flow in the suction pipe of the model pumps was measured and free surfaces and submerged vortices were observed. The model tests were made for all operating conditions of pumps. Comparison between the model and prototype showed a good agreement by the formation of an identical free surface vortex in the same area of the sump. In order to prevent the formations of the unfavorable free surface vortex, the geometry of intake structures with the additional elements and obstacles were modified. Measured and observed results for additional tests have been obtained. The optimized geometry of intake structures provided favorable flow conditions by safety factor 1.5 within acceptable criteria of the ANSI/HI standard.
%U https://www.sv-jme.eu/sl/article/experimental-hydraulic-analysis-of-intake-structure-for-cooling-towers-pumps/
%0 Journal Article
%R 10.5545/sv-jme.2018.5262
%& 566
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 64
%N 9
%@ 0039-2480
%8 2018-10-11
%7 2018-10-11
Žvab, Gregor, & Gregor  Lapuh.
"Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps." Strojniški vestnik - Journal of Mechanical Engineering [Online], 64.9 (2018): 566-576. Web.  17 Sep. 2021
TY  - JOUR
AU  - Žvab, Gregor 
AU  - Lapuh, Gregor 
PY  - 2018
TI  - Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2018.5262
KW  - intake structures, physical hydraulic model, free surface flow, free surface vortices, vertical pump
N2  - Experimental hydraulic analysis of troubleshooting intake structures for cooling towers (CT) pumps in nuclear power plant are presented in this paper. The formation of the free surface vortex in the pump sump with unfavorable intensity was not acceptable for the safe operation of the cooling towers pump and the cooling system in general. The objective of the present study is to investigate and improve hydraulic flow conditions in intake structure of CT pumping stations within acceptable criteria of the ANSI/HI standard experimentally. For this purpose, the physical hydraulic model with the scale factor 16 was made. Boundary conditions were calculated by dimensional analysis with the Froude number. The vorticity of flow in the suction pipe of the model pumps was measured and free surfaces and submerged vortices were observed. The model tests were made for all operating conditions of pumps. Comparison between the model and prototype showed a good agreement by the formation of an identical free surface vortex in the same area of the sump. In order to prevent the formations of the unfavorable free surface vortex, the geometry of intake structures with the additional elements and obstacles were modified. Measured and observed results for additional tests have been obtained. The optimized geometry of intake structures provided favorable flow conditions by safety factor 1.5 within acceptable criteria of the ANSI/HI standard.
UR  - https://www.sv-jme.eu/sl/article/experimental-hydraulic-analysis-of-intake-structure-for-cooling-towers-pumps/
@article{{sv-jme}{sv-jme.2018.5262},
	author = {Žvab, G., Lapuh, G.},
	title = {Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {64},
	number = {9},
	year = {2018},
	doi = {10.5545/sv-jme.2018.5262},
	url = {https://www.sv-jme.eu/sl/article/experimental-hydraulic-analysis-of-intake-structure-for-cooling-towers-pumps/}
}
TY  - JOUR
AU  - Žvab, Gregor 
AU  - Lapuh, Gregor 
PY  - 2018/10/11
TI  - Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 64, No 9 (2018): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2018.5262
KW  - intake structures, physical hydraulic model, free surface flow, free surface vortices, vertical pump
N2  - Experimental hydraulic analysis of troubleshooting intake structures for cooling towers (CT) pumps in nuclear power plant are presented in this paper. The formation of the free surface vortex in the pump sump with unfavorable intensity was not acceptable for the safe operation of the cooling towers pump and the cooling system in general. The objective of the present study is to investigate and improve hydraulic flow conditions in intake structure of CT pumping stations within acceptable criteria of the ANSI/HI standard experimentally. For this purpose, the physical hydraulic model with the scale factor 16 was made. Boundary conditions were calculated by dimensional analysis with the Froude number. The vorticity of flow in the suction pipe of the model pumps was measured and free surfaces and submerged vortices were observed. The model tests were made for all operating conditions of pumps. Comparison between the model and prototype showed a good agreement by the formation of an identical free surface vortex in the same area of the sump. In order to prevent the formations of the unfavorable free surface vortex, the geometry of intake structures with the additional elements and obstacles were modified. Measured and observed results for additional tests have been obtained. The optimized geometry of intake structures provided favorable flow conditions by safety factor 1.5 within acceptable criteria of the ANSI/HI standard.
UR  - https://www.sv-jme.eu/sl/article/experimental-hydraulic-analysis-of-intake-structure-for-cooling-towers-pumps/
Žvab, Gregor, AND Lapuh, Gregor.
"Experimental Hydraulic Analysis of Intake Structure for Cooling Towers Pumps" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 64 Number 9 (11 October 2018)

Avtorji

Inštitucije

  • Kolektor-Turboinštitut d.o.o., Slovenia 1
  • Krško Nuclear Power Plant, Slovenia 2

Informacije o papirju

Strojniški vestnik - Journal of Mechanical Engineering 64(2018)9, 566-576

https://doi.org/10.5545/sv-jme.2018.5262

Experimental hydraulic analysis of troubleshooting intake structures for cooling towers (CT) pumps in nuclear power plant are presented in this paper. The formation of the free surface vortex in the pump sump with unfavorable intensity was not acceptable for the safe operation of the cooling towers pump and the cooling system in general. The objective of the present study is to investigate and improve hydraulic flow conditions in intake structure of CT pumping stations within acceptable criteria of the ANSI/HI standard experimentally. For this purpose, the physical hydraulic model with the scale factor 16 was made. Boundary conditions were calculated by dimensional analysis with the Froude number. The vorticity of flow in the suction pipe of the model pumps was measured and free surfaces and submerged vortices were observed. The model tests were made for all operating conditions of pumps. Comparison between the model and prototype showed a good agreement by the formation of an identical free surface vortex in the same area of the sump. In order to prevent the formations of the unfavorable free surface vortex, the geometry of intake structures with the additional elements and obstacles were modified. Measured and observed results for additional tests have been obtained. The optimized geometry of intake structures provided favorable flow conditions by safety factor 1.5 within acceptable criteria of the ANSI/HI standard.

intake structures, physical hydraulic model, free surface flow, free surface vortices, vertical pump