Elevated tanks effect on transient pressures: case study

Elevated tanks are an integral part of the water supply networks. This paper highlights the effect of elevated tanks' location and size on the transient pressures resulting from the sudden failure of pumps. A comparison between the impact of elevated tanks and air vessels on the water hammer wa...

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Autor principal:	Moustafa S. Darweesh
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	elevated tanks pressure transients pumps water distribution network water hammer Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/af3a58e1262c40a589d1faa890e1a207
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spelling	oai:doaj.org-article:af3a58e1262c40a589d1faa890e1a2072021-11-05T19:34:31ZElevated tanks effect on transient pressures: case study2043-90832408-936210.2166/washdev.2021.022https://doaj.org/article/af3a58e1262c40a589d1faa890e1a2072021-07-01T00:00:00Zhttp://washdev.iwaponline.com/content/11/4/629https://doaj.org/toc/2043-9083https://doaj.org/toc/2408-9362Elevated tanks are an integral part of the water supply networks. This paper highlights the effect of elevated tanks' location and size on the transient pressures resulting from the sudden failure of pumps. A comparison between the impact of elevated tanks and air vessels on the water hammer was also performed. The Bentley HAMMER model was first validated then applied to analyze the unsteady flow within an actual distribution network. The results display that the elevated tanks have a considerable effect on the surge pressures, where they improve the extreme pressures effectively at and around them, but they cannot fully protect the system from the water hammer risks, as there are still relatively large negative pressures at some distant junctions. Besides, as the tank capacity increases, the surge pressures increase slightly. In our case study, the best location of the elevated tank is at the network extremity and then at the pumping stations, since the minimum pressures improve by 67 and 54%, respectively. Although the present case study may differ from other supply systems, the obtained results can provide an indication of the elevated tanks' role in alleviating undesirable water hammer effects. Highlights This paper highlights the effect of elevated tanks’ location and size on the water hammer pressures.; A comparison between the impact of elevated tanks and air vessels was also performed.; The Bentley HAMMER model was validated and then applied to analyze the unsteady flow within an actual distribution network.; The gained results can give an indication about the effect of elevated tanks on the transient pressures.;Moustafa S. DarweeshIWA Publishingarticleelevated tankspressure transientspumpswater distribution networkwater hammerEnvironmental technology. Sanitary engineeringTD1-1066ENJournal of Water, Sanitation and Hygiene for Development, Vol 11, Iss 4, Pp 629-637 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	elevated tanks pressure transients pumps water distribution network water hammer Environmental technology. Sanitary engineering TD1-1066
spellingShingle	elevated tanks pressure transients pumps water distribution network water hammer Environmental technology. Sanitary engineering TD1-1066 Moustafa S. Darweesh Elevated tanks effect on transient pressures: case study
description	Elevated tanks are an integral part of the water supply networks. This paper highlights the effect of elevated tanks' location and size on the transient pressures resulting from the sudden failure of pumps. A comparison between the impact of elevated tanks and air vessels on the water hammer was also performed. The Bentley HAMMER model was first validated then applied to analyze the unsteady flow within an actual distribution network. The results display that the elevated tanks have a considerable effect on the surge pressures, where they improve the extreme pressures effectively at and around them, but they cannot fully protect the system from the water hammer risks, as there are still relatively large negative pressures at some distant junctions. Besides, as the tank capacity increases, the surge pressures increase slightly. In our case study, the best location of the elevated tank is at the network extremity and then at the pumping stations, since the minimum pressures improve by 67 and 54%, respectively. Although the present case study may differ from other supply systems, the obtained results can provide an indication of the elevated tanks' role in alleviating undesirable water hammer effects. Highlights This paper highlights the effect of elevated tanks’ location and size on the water hammer pressures.; A comparison between the impact of elevated tanks and air vessels was also performed.; The Bentley HAMMER model was validated and then applied to analyze the unsteady flow within an actual distribution network.; The gained results can give an indication about the effect of elevated tanks on the transient pressures.;
format	article
author	Moustafa S. Darweesh
author_facet	Moustafa S. Darweesh
author_sort	Moustafa S. Darweesh
title	Elevated tanks effect on transient pressures: case study
title_short	Elevated tanks effect on transient pressures: case study
title_full	Elevated tanks effect on transient pressures: case study
title_fullStr	Elevated tanks effect on transient pressures: case study
title_full_unstemmed	Elevated tanks effect on transient pressures: case study
title_sort	elevated tanks effect on transient pressures: case study
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/af3a58e1262c40a589d1faa890e1a207
work_keys_str_mv	AT moustafasdarweesh elevatedtankseffectontransientpressurescasestudy
_version_	1718444059019706368

Elevated tanks effect on transient pressures: case study

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