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Flexible Operation of Cooling System for Reducing Energy Consumption

J. Martinez-Patiño, M.P. Núñez, M.A. Hernández-Figueroa, A.P. Martínez
2014 Chemical Engineering Transactions  
Such is the case we study in this paper: once the operation of a cooling system is modified by changing the heat exchange network and managing to reduce the heat exchange area and water consumption, the  ...  pumping system is also modified, achieving lower energy consumption.  ...  the electric energy consumption of a pumping system can be reduced.  ... 
doi:10.3303/cet1439049 doaj:19bfb55a6cf84e4eb98f1b93ac8668ed fatcat:dmzvbfukb5fgne2ghli2iefbae

Comparison of Pumping Regimes for Water Distribution Systems to Minimize Cost and Greenhouse Gases

Lisa J. Blinco, Angus R. Simpson, Martin F. Lambert, Angela Marchi
2016 Journal of water resources planning and management  
Significant cost savings were achieved for the South Australian case study network compared to its current operation. EL 100 m EL 106 m EL 162 m Off-Peak Peak Cost: 0.0360 $/m 3  ...  A single-objective optimization model has been developed for water distribution system (WDS) pumping operations, considering five different types of pump operating regimes.  ...  The authors would like to thank X.J. Wang at SA Water for providing information to allow the model to be applied to a real-life network.  ... 
doi:10.1061/(asce)wr.1943-5452.0000633 fatcat:4ef4fzwvandwtgam4o3lfwpupy

Real-time Optimal Control of Water Distribution Systems

D. Kang
2014 Procedia Engineering  
The model aims to minimize operation cost by optimal control of pump system, while satisfying various operational constraints under demand fluctuations and energy tariff variations throughout operation  ...  This study attempts to develop a real-time optimal control model for water distribution network.  ...  The energy cost of each pump for 48-hr durations are summarized in Table 3 . By optimal operations, the total energy cost was reduces as 1/5 of the rule-based operation.  ... 
doi:10.1016/j.proeng.2014.02.102 fatcat:q7oycagsbzhanab3zaqy3enmii

Lost in optimisation of water distribution systems? A literature review of system operation

Helena Mala-Jetmarova, Nargiz Sultanova, Dragan Savic
2017 Environmental Modelling & Software  
Ostfeld and Salomons (2006) discovered that pumping costs are significantly reduced if water quality is absent from the optimisation model and conversely, that the best water quality outcome corresponds  ...  to the highest pump operating costs.  ...  When the cost of non-revenue water is introduced, more pumping occurs during the day time and leakage reduces.  It was found that the non-revenue water cost dominates the energy cost of pumping water,  ... 
doi:10.1016/j.envsoft.2017.02.009 fatcat:ryp5kbzafrb43lprrx5ptzzvme

Pumping Pattern Optimization in Order to Reduce WDS Operation Costs

Jessica Bohórquez, Juan Saldarriaga, Daniel Vallejo
2015 Procedia Engineering  
A significant percentage of Water Distribution Systems' operation costs is due to energy consumption on pumping systems as well as lost water due to leakages.  ...  The main reason of these high costs is a non-optimized pumping pattern that leads to excessive overall pressure on the network.  ...  The main source of the operation costs on WDS is due to energy consumption on the pumping system Energy Costs There are two possibilities for reducing WDS pumping costs due to energy price, modify the  ... 
doi:10.1016/j.proeng.2015.08.936 fatcat:3b4vbmmlqzcnljliutgj6rgf4a

Water Energy Nexus for Water Distribution Systems: A Literature Review

Muhammad Nadeem Sharif, Husnain Haider, Ashraf Farahat, Kasun Hewage, Rehan Sadiq
2019 Environmental Reviews  
the network.  ...  Most of the reviewed studies suggest a trade-off between energy cost and the 25 associated GHG emissions when selecting fixed speed pumps over variable speed pumps for 26 large WDSs.  ...  Pressure reducing valves (PRVs) are commonly used to 278 control hydraulic energy available in the drinking water pipe network.  ... 
doi:10.1139/er-2018-0106 fatcat:tu2sgt457fdm3jox5upaoflify

Sequential Multi-objective Evolutionary Algorithm for a Real-world Water Distribution System Design

F. Rahmani, K. Behzadian
2014 Procedia Engineering  
tank upgrading and (2) the cost of water losses and energy.  ...  At the first stage, the optimal design of pipeline rehabilitation, pump scheduling and tank sizing is formulated and solved on the skeletonized network by a optimizing (1) the costs of pipes, pumps and  ...  the real amount of water loss and energy cost accurately for the original C-Town network.  ... 
doi:10.1016/j.proeng.2014.11.164 fatcat:zsvw5c2d5vckjiopgfce6ydpae

Near Real Time Pump Optimization and Pressure Management

Bruno M. Brentan, Edevar Luvizotto, Idel Montalvo, Joquín Izquierdo, Rafael Pérez-García
2017 Procedia Engineering  
set points, aiming at combining energy savings with pressure control while reducing water losses.  ...  However, among the large number of combinations, some of them manage to reduce energy consumption, by finding the best operating point for pumps, and also water losses, by finding the best operating point  ...  network data.  ... 
doi:10.1016/j.proeng.2017.06.248 fatcat:jq3pdxgq5fbq7f33dwzjhmbpka

Control of Pumps of Water Supply Network under Hydraulic and Energy Optimisation Using Artificial Intelligence

Jan Studziński, Andrzej Ziółkowski
2020 Entropy  
The aim of having control is the hydraulic optimisation of the network, i.e., ensuring the desired pressure in its recipient nodes, and minimising energy costs of network operation.  ...  This article presents several algorithms for controlling water supply system pumps.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/e22091014 pmid:33286783 fatcat:jzbd3p7ma5gdja6fmflopr27ju

Application of Innovative Technologies for Active Control and Energy Efficiency in Water Supply Systems

Armando Carravetta, Maurizio Giugni, Stefano Malavasi
2020 Water  
The larger anthropic pressure on the Water Supply Systems (WSS) and the increasing concern for the sustainability of the large energy use for water supply, transportation, distribution, drainage and treatment  ...  are determining a new perspective in the management of water systems [...]  ...  network using a pumping station and reservoirs, with the purpose of reducing operational costs.  ... 
doi:10.3390/w12113278 fatcat:fozflzowprepjmmw3ktmmkhyey

Optimization of Osmotic Desalination Plants for Water Supply Networks

Armando Carravetta, Oreste Fecarotta, Umberto Maria Golia, Michele La Rocca, Riccardo Martino, Roberta Padulano, Tullio Tucciarelli
2016 Water resources management  
A further reduction of the energy cost could be obtained by an optimal operation Water Resour Manage of the desalination plant so reducing the hourly energy cost, or by coupling the RO plant with an energy  ...  Several scenarios will be analyzed to assess the minimum cost of fresh water production and water supply to the network, including the use of energy recovery systems, such as an integrated use of RO and  ...  Different scenarios will be analyzed to reduce all costs connected with water treatment and supply to the network.  ... 
doi:10.1007/s11269-016-1404-9 fatcat:fusdwtfn6rf6taf6tunwwaw52y

Use of EPANET solver to manage water distribution in Smart City

A. Antonowicz, R. Brodziak, J. Bylka, J. Mazurkiewicz, S. Wojtecki, P. Zakrzewski, M. Cimochowicz-Rybicka
2018 E3S Web of Conferences  
The main task is to develop the application that allows remote access to the simulation model of the water distribution network developed in the EPANET environment.  ...  In the paper the architecture of application was shown. The application supports the selection of the best device control algorithm using optimization methods.  ...  The main aim of task is to search the best solution for pumps control -where the cost of operations and energy is minimal.  ... 
doi:10.1051/e3sconf/20183001016 fatcat:s5ehz3t3pjczzge6fuitxbs7jq

Advanced control of a water supply system: a case study

M. Bakker, T. Rajewicz, H. Kien, J. H. G. Vreeburg, L. C. Rietveld
2014 Water practice and technology  
The lower pressure resulted in 20% less background leakage and the overall system's energy costs were 11.5% lower.  ...  The comparison showed that with advanced control the variation in the production flow was 83% lower, and the pump pressure of the clear water pumps was 29% lower.  ...  The project was implemented by Royal HaskoningDHV the Netherlands, supported by water utility Oasen (the Netherlands), water utility Aquanet (Poland) and Royal HaskoningDHV Poland.  ... 
doi:10.2166/wpt.2014.030 fatcat:uoxd7i6fxvdjtmgefuqtku7jrq

Optimization of Water Pressure of a Distribution Network within the Water–Energy Nexus

Hossein Nasrollahi, Reza Safaei Boroujeni, Reza Shirmohammadi, Shima Najafi Nobar, Alireza Aslani, Majid Amidpour, Fontina Petrakopoulou
2021 Applied Sciences  
Pressure control in water distribution networks (WDNs) reduces leaks and bursting.  ...  Moreover, the hourly optimization of water pressure based on changes in demand and energy prices throughout the day is estimated to cut costs by 41%.  ...  Several cost-related factors (e.g., leaks, pipe breaks, water network repair, and the energy required to pump water into the network) are generally considered by all water companies.  ... 
doi:10.3390/app11188371 fatcat:4dr5jywz5nf2faqhcac26xvjaa

IRRIGATION AND ENERGY: ISSUES AND CHALLENGES

G. Belaud, L. Mateos, R. Aliod, M.‐C. Buisson, E. Faci, S. Gendre, G. Ghinassi, R. Gonzales Perea, C. Lejars, F. Maruejols, N. Zapata
2019 Irrigation and Drainage  
The BRL network, in southern France, illustrates advanced strategies and opportunities to reduce energy consumption and develop energy production at a network level.  ...  Water-efficient agriculture has implied a large increase in energy consumption for irrigation in recent decades. In many irrigation systems, energy costs are now threatening their sustainability.  ...  Water users are interested not only in saving energy, but also in reducing energy costs.  ... 
doi:10.1002/ird.2343 fatcat:4pitsl2pz5dlvl5ojpzcbaylvu
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