scholarly journals DESIDS: An Integrated Decision Support System for the Planning, Analysis, Management and Rehabilitation of Pressurised Irrigation Distribution Systems

Modelling ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 308-326
Author(s):  
Abdelouahid Fouial ◽  
Juan Antonio Rodríguez Díaz
Keyword(s):  
Decision Support ◽  
Distribution Systems ◽  
Water Distribution ◽  
Vital Role ◽  
Irrigation District ◽  
Strategic Decisions ◽  
Wide Range ◽  
Pressurized Irrigation ◽  
Proper Operation ◽  
Operation And Management

Pressurized irrigation distribution systems (PIDSs) play a vital role in irrigation intensification, especially in the Mediterranean region. The design, operation and management of these systems can be complex, as they involve several intertwined processes which need to be considered simultaneously. For this reason, numerous decision support systems (DSSs) have been developed and are available to deal with these processes, but as independent components. To this end, a comprehensive DSS called DESIDS has been developed and tested. This DSS has been developed to bear in mind the needs of irrigation district managers for an integrated tool that can assist them in taking strategic decisions for managing and developing reliable, adequate and sustainable water distribution plans which provide the best services to farmers. Hence, four modules were integrated in DESIDS: (i) irrigation demand and scheduling module; (ii) hydraulic analysis module; (iii) operation and management module; and (iv) design and rehabilitation module. DESIDS was tested on different case studies, proving itself a valuable tool for irrigation district managers, as it provides a wide range of decision options for the proper operation and management of PIDSs. The developed DSS can be used as a platform for future integrations and expansions, and to include other processes needed for better decision-making support.

Evaluating the Performance Degradation of Centrifugal Pumps Using the Principal Component Analysis

2021 ◽  
Author(s):  
Andrew Eaton ◽  
Wael Ahmed ◽  
Marwan A. Hassan
Keyword(s):  
Principal Component Analysis ◽  
Distribution Systems ◽  
Water Distribution ◽  
Principal Component ◽  
Component Analysis ◽  
Performance Degradation ◽  
Centrifugal Pumps ◽  
Pump Performance ◽  
Hydraulic Machines ◽  
Wide Range

Abstract Centrifugal pumps are used in a variety of engineering applications, such as power production, heating, cooling, and water distribution systems. Although centrifugal pumps are considered to be highly reliable hydraulic machines, they are susceptible to a wide range of damage due to several degradation mechanisms, which make them operate away from their best efficiency range. Therefore, evaluating the energy efficiency and performance degradation of pumps is an important consideration to the operation of these systems. In the present study, the hydraulic performance along with the vibration response of an industrial scale centrifugal pump (7.5KW) subjected to different levels of impeller unbalance were experimentally investigated. Extensive testing of pump performance along with vibration measurements were carried. Both time and frequency domain techniques coupled with principal component analysis (PCA) were used in this evaluation. The effect of unbalance on the pump performance was found to be mainly on the shaft power, while no change in the flow rate and the pump head were observed. As the level of unbalance increased, the power required to operate the pump at the designated speed increased by as much as 12%. The PCA found to be a useful tool in comparing the pump vibrations in the field in order to determine the presence of unbalance as well as the degree of damage. The results of this work can be used to evaluate and monitor pump performance under prescribed degradation in order to enhance preventative maintenance programs.

scholarly journals Energy Saving Measures in Pressurized Irrigation Networks: A New Challenge for Power Generation

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1440 ◽  
Author(s):  
Jorge García Morillo ◽  
Juan A. Rodríguez Díaz ◽  
Miguel Crespo ◽  
Aonghus McNabola
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Distribution Systems ◽  
Water Distribution ◽  
Irrigation System ◽  
Distribution Networks ◽  
Water Networks ◽  
Irrigation Network ◽  
Irrigation Networks ◽  
Pressurized Irrigation

In Spain and other countries, open channel distribution networks have been replaced by on demand-pressurized networks to improve the water-use efficiency of the water distribution systems, but at the same time the energy requirements have dramatically risen. Under this scenario, methodologies to reduce the energy consumption are critical such as: irrigation network sectoring, critical hydrant detection, improving the efficiency of the pumping system and the irrigation system, or introducing solar energy for water supply. But once these measures are undertaken, the recovery of the energy inherent in excess pressure in the network should be investigated. Hydropower energy recovery in irrigation is still largely unexplored and requires further investigation and demonstration. All of these methodologies should be considered as useful tools for both, the reduction of energy consumption and the recovery of the excess energy in pressurized irrigation networks. To accomplish this, the REDAWN project (Reducing Energy Dependency in Atlantic Area Water Networks) aims to improve the energy efficiency of water networks through the installation of innovative micro-hydropower (MHP) technology. This technology will recover wasted energy in existing pipe networks across irrigation, public water supply, process industry, and waste-water network settings.

The four Rs performance indicators of water distribution networks

2017 ◽  
Vol 34 (5) ◽  
pp. 720-732 ◽  
Author(s):  
Indra Gunawan ◽  
Frank Schultmann ◽  
Seyed Ashkan Zarghami
Keyword(s):  
Performance Indicators ◽  
System Performance ◽  
Distribution Systems ◽  
Water Distribution ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Critical Infrastructures ◽  
Content Type ◽  
Wide Range ◽  
Definition Of

Purpose The purpose of this paper is to review the different interpretations of four key performance indicators of water distribution networks (WDNs): reliability, resilience, redundancy and robustness. It then addresses a range of metrics which have been developed to assess the performance of critical infrastructures, in particular WDNs. Design/methodology/approach The paper provides a comprehensive review and categorization of performance indicators of WDNs. The main focus is on papers addressing performance indicators of water distribution systems, additionally papers on application of complex system approach to critical infrastructures are also included. Findings Due to this complexity, a wide range of interpretation of WDNs performance indicators exists in the literature. This represents a significant impediment toward universally accepted interpretation of these indicators Accurate assessment of WDNs’ performance depends on clear definition of system performance indicators as well as accurate quantifying of these indicators. The application of 18 metrics as a basis for assessing the system performance have been reviewed in this paper and none are particularly significant as standalone values. Combination of these indicators are required to accurately indicate the performance of WDNs. Originality/value The authors believe that this paper can be a valuable source of information for academic researchers and practitioners and suggests a roadmap for future works.

scholarly journals Contaminant source characterization in water distribution systems using binary signals

2012 ◽  
Vol 14 (3) ◽  
pp. 585-602 ◽  
Author(s):  
Jitendra Kumar ◽  
E. Downey Brill ◽  
G. Mahinthakumar ◽  
S. Ranji Ranjithan
Keyword(s):  
Distribution System ◽  
Source Identification ◽  
Distribution Systems ◽  
Water Distribution ◽  
Data Availability ◽  
Source Characterization ◽  
Contaminant Source ◽  
Quality Signals ◽  
Wide Range ◽  
True Source

This paper presents a simulation–optimization-based method for identification of contamination source characteristics in a water distribution system using filtered data from threshold-based binary water quality signals. The effects of quality and quantity of the data on the accuracy of the source identification methodology are investigated. This study also addresses the issue of non-uniqueness in contaminant source identification under various data availability conditions. To establish the robustness and applicability of the methodology, numerous scenarios are investigated for a wide range of contamination incidents associated with two different networks. Results indicate that, even though use of lower resolution sensors lead to more non-unique solutions, the true source location is always included among these solutions.

scholarly journals Water Expert: a conceptualized framework for development of a rule-based decision support system for distribution system decontamination

2015 ◽  
Vol 8 (2) ◽  
pp. 9-24
Author(s):  
J. L. Gutenson ◽  
A. N. S. Ernest ◽  
J. R. Fattic ◽  
L. E. Ormsbee ◽  
A. A. Oubeidillah ◽  
...  
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
Policy Science ◽  
Web Browser ◽  
Drinking Water Contamination ◽  
Technological Intervention

Abstract. Significant drinking water contamination events pose a serious threat to public and environmental health. Water utilities often must make timely, critical decisions without evaluating all facets of the incident. The data needed to enact informed decisions are inevitably dispersant and disparate, originating from policy, science, and heuristic contributors. Water Expert is a functioning hybrid decision support system (DSS) and expert system framework that emphasizes the meshing of parallel data structures in order to expedite and optimize the decision pathway. Delivered as a thin-client application through the user's web browser, Water Expert's extensive knowledgebase is a product of inter-university collaboration that methodically pieced together system decontamination procedures. Decontamination procedures are investigated through consultation with subject matter experts, literature review, and prototyping with stakeholders. This paper discusses the development of Water Expert, analyzing the development process underlying the DSS and the system's existing architecture specifications. Water Expert constitutes the first system to employ a combination of deterministic and heuristic models which provide decontamination solutions for water distribution systems. Results indicate that the decision making process following a contamination event is a multi-disciplinary effort. This contortion of multiple inputs and objectives limit the ability of the decision maker to find optimum solutions without technological intervention.

Application of decision support systems in water management

2014 ◽  
Vol 22 (3) ◽  
pp. 189-205 ◽  
Author(s):  
Kejiang Zhang ◽  
Amin Zargar ◽  
Gopal Achari ◽  
M. Shafiqul Islam ◽  
Rehan Sadiq
Keyword(s):  
Water Management ◽  
Decision Support ◽  
Decision Support Systems ◽  
Asset Management ◽  
Water Resource Management ◽  
Distribution Systems ◽  
Water Distribution ◽  
Support Systems ◽  
Future Research ◽  
Water And Wastewater Treatment

This paper presents an overview of decision support systems (DSSs) as applied to water management. This includes the definition of DSSs as pertinent to water management, its basic components, various techniques employed in development of DSSs, and technological and conceptual trends in DSSs. The application of DSSs in various areas of water management such as water resource management, water and wastewater treatment operations, water distribution systems, and infrastructure asset management is discussed. Calibration and validation of DSSs and future research in the development of new generations of DSSs is presented.

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