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Paper Title:
SURGE ANALYSIS OF WATER PUMPING PIPELINE SYSTEM (CASE STUDY: AJALLI RAW WATER PUMPING PIPELINE SYSTEM) IN EZEAGU LOCAL GOVERNMENT AREA, ENUGU STATE, SOUTHERN NIGERIA.
Authors Name:
Engr. Charles, Eze Ekemeka
, Prof. Agunwaba, Jonah Chukwuemeka , Engr. Dr. Odenigbo Celestine
bstract: Generally, water transmission systems are inherently pressure transients, since the systems must beoperated
either programmed or unprogrammed. The resulting pressure transients could be destructiveto the hydrauic systems,
depending on its magnitude. The study concerns surge anaysis of pumpingwater pipeline system using Ajalli raw water
pumping pipeine system in Ezeagu Local Government Areaof Enugu State, Nigeria as a case study. The method employed in
the analysis is varying the number ofpumps in operation from 1-6, that is the flow rate (Q1-Q6) using a mathematica mode
with the help of an Excel software to determine the magnitude of surge pressures at selected keypoints along the pipeine as
well as determining the minimum thickness of the pipeine required for safe and efficientoperations of the system, since
thickness governs the design of pipeine system against surge and the adequacy of the surgealowances provision (rampup
and ramp downtimes) for an electrically induced transient pressures.The analysis of these three parameters, surge pressure,
minimum pipe wall thickness required and period of vibrations were carried out with as well as without functional anti
water hammer devices. The results obtained show that the actual pipe wall thickness did not satisfy the minimum thickness
required for safe and efficient operation of the system when more than three pumps are simultaneously inoperation.
However, the surge pressure developed at the keypoints of the pipeline system are well below the test pressure of 41.5 bar
when five pumps are in operation but are slighty above the test pressure of 41.5 bar when more than five pumps are in
operation from drainage 00m to 210m and from chainage 3+930m to 4+470m. Moreover, the calculated period of vibrations
for an electrically induced transient pressures is very well below the actual ramp up and ramp down allowances.For the
pipeline to operate safely, efficiently and maximaly as designed six duty and one standby, it was recommended to increase
thepipelinewallthicknessfrom7.10mmto10.8mmfromchainage00mtochainage5+550m.Moreover,additionalanti
waterhammerprotectiondevicesareasorecommendedto improve the operational efficiency and safety of the pipeine
against inadmissible surge pressures in an even to electromechanically induced surge pressures inview of poor quality and
inadequate power availability in Nigeriain general and Ajalli water scheme in particular.
Keywords:
Surge, Hydraulic system, chainage and water hammer
Cite Article:
"SURGE ANALYSIS OF WATER PUMPING PIPELINE SYSTEM (CASE STUDY: AJALLI RAW WATER PUMPING PIPELINE SYSTEM) IN EZEAGU LOCAL GOVERNMENT AREA, ENUGU STATE, SOUTHERN NIGERIA.", International Journal for Research Trends and Innovation (www.ijrti.org), ISSN:2455-2631, Vol.7, Issue 12, page no.230 - 244, December-2022, Available :http://www.ijrti.org/papers/IJRTI2212032.pdf
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ISSN:
2456-3315 | IMPACT FACTOR: 8.14 Calculated By Google Scholar| ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.14 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator