Classification of water supply systems based on energy efficiency

2015 ◽  
Vol 15 (6) ◽  
pp. 1193-1199 ◽  
Author(s):  
Gustavo Meirelles Lima ◽  
Augusto Nelson Carvalho Viana ◽  
Renato Swerts Carneiro Dias Junior ◽  
Edevar Luvizotto Junior
Keyword(s):  
Energy Efficiency ◽  
Information System ◽  
Water Supply ◽  
Point Of View ◽  
Water Supply Systems ◽  
Efficiency Improvement ◽  
Conservation Of Energy ◽  
Different Characteristics ◽  
Supply Systems

The Brazilian Labeling Program is a forceful instrument for the conservation of energy. In addition to allowing consumers to evaluate the best products from an energy point of view, it sets targets to make the products increasingly more efficient. In this context, buildings that can currently obtain the energy efficiency label are also included, demonstrating to customers the concern for sustainability. However, there are still many products and systems that can be labeled but for which legislation has not yet been enacted, including water supply systems. Owing to the different characteristics of the systems and the different possibilities for efficiency improvement, it is necessary to develop indicators that actually represent the reality of each system and make it possible to compare them. Thus, this study proposes the use of certain indicators for classification of the systems. A classification by sector benchmarking is also proposed in Brazil, and an example is presented for the classification of Brazilian systems based on four indicators obtained by the National Sanitation Information System.

Better water quality and higher energy efficiency by using model predictive flow control at water supply systems

2013 ◽  
Vol 62 (1) ◽  
pp. 1-13 ◽  
Author(s):  
M. Bakker ◽  
J. H. G. Vreeburg ◽  
L. J. Palmen ◽  
V. Sperber ◽  
G. Bakker ◽  
...  
Keyword(s):  
Water Quality ◽  
Energy Efficiency ◽  
Water Supply ◽  
Flow Control ◽  
Water Supply Systems ◽  
Supply Systems

Modeling of hydraulic and energy efficiency indicators for water supply systems

2015 ◽  
Vol 48 ◽  
pp. 540-557 ◽  
Author(s):  
Mateus Ricardo Nogueira Vilanova ◽  
José Antônio Perrella Balestieri
Keyword(s):  
Energy Efficiency ◽  
Water Supply ◽  
Water Supply Systems ◽  
Supply Systems ◽  
Efficiency Indicators

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

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3278
Author(s):  
Armando Carravetta ◽  
Maurizio Giugni ◽  
Stefano Malavasi
Keyword(s):  
Energy Efficiency ◽  
Water Supply ◽  
Active Control ◽  
Energy Use ◽  
Water Systems ◽  
Water Supply Systems ◽  
Innovative Technologies ◽  
New Perspective ◽  
Supply Systems ◽  
Anthropic Pressure

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 [...]

scholarly journals Energy audit in water supply systems: a proposal of integrated approach towards energy efficiency

Water Policy ◽  
2020 ◽  
Vol 22 (6) ◽  
pp. 1126-1141
Author(s):  
Ana Paula Pereira da Silveira ◽  
Herlander Mata-Lima
Keyword(s):  
Energy Efficiency ◽  
Water Supply ◽  
Energy Management ◽  
Integrated Approach ◽  
Water Supply Systems ◽  
Energy Audit ◽  
Water Utility ◽  
Key Issues ◽  
User Friendly ◽  
Supply Systems

Abstract An integrated procedure has been designed to identify and rank the opportunity for energy efficiency in water supply systems (WSS). The main objective is to help WSS managers to identify key issues to be treated as nonconformity and develop a program for continual improvement of energy efficiency. The procedure was built in collaboration with practitioners and implemented in a company. One of the concerns during the development of the procedure was to provide companies with a fast and user-friendly tool. Complementarily, it also complies with International Organization for Standardization (ISO) and European Committee for Standardization (CEN) standards, and is of great relevance for any company of the sector of water utility. Recommendations for enhancing the energy management in WSS are also addressed in the audit procedure. The findings derived from the evaluation of the state-of-the-art and applications have led to the identification of key issues for energy saving. The success of energy management programs will be based on energy audit and on the top managements' engagement, workers' attitude and qualification, and the financial resources available.

scholarly journals Method of evaluation of efficiency improvement potential for water supply systems with focus on variable speed centrifugal pumps

2012 ◽  
Vol 5 (1) ◽  
pp. 533-553
Author(s):  
D. Pilscikovs ◽  
E. Dzelzitis
Keyword(s):  
Water Supply ◽  
Electrical Energy ◽  
Pressure Control ◽  
Control Mode ◽  
Water Supply Systems ◽  
Public Water Supply ◽  
Efficiency Improvement ◽  
Variable Speed ◽  
Improvement Potential ◽  
Supply Systems

<p><strong>Abstract.</strong> The goal of this research is the derivation of the method for evaluation of efficiency improvement potential for public water supply systems with a focus on centrifugal network pumps. The efficiency of proportional pressure control usage has been analyzed for variable speed pumps. It has been done if proportional pressure control is used in comparison with constant pressure control mode. For this reason, energy calculation analyses have been realized for variable speed centrifugal pumps, and the theoretical tool of estimation of the efficiency improvement potential for public water supply systems has been derived. The conclusions are as follows: (1) it has been found that 1110 MWh of annually consumed electrical energy can be saved up, if the control mode of variable speed network pumps will be changed from constant pressure to proportional pressure control mode with the deviation of 20% from head value of duty point at zero flow; (2) about 13 MWh of annually consumed electrical energy can be saved up, if the proportional pressure control mode with the deviation of 15% will be changed to the deviation of 20%; (3) totally about 1123 MWh or 1.12 GWh (14% of the annually consumed electrical energy by variable speed network pumps) can be saved up in small public water supply systems in Latvia.</p>

From energy balance to energy efficiency indicators including water losses

2013 ◽  
Vol 13 (4) ◽  
pp. 889-895 ◽  
Author(s):  
C. Lenzi ◽  
C. Bragalli ◽  
A. Bolognesi ◽  
S. Artina
Keyword(s):  
Energy Efficiency ◽  
Energy Balance ◽  
Water Supply ◽  
Distribution Systems ◽  
Water Distribution ◽  
Energy Content ◽  
Water Supply Systems ◽  
Water Losses ◽  
The Impact ◽  
Supply Systems

The collection and distribution of drinking water resources generally require large quantities of energy, that vary according to factors related to the characteristics of the served area, as well as to design and management choices. Energy intensity indicators (energy per unit of volume) are insufficient to assess the weight of different factors that affect the energy consumption and appear not suitable for the comparison of different water supply systems. The key step of this work is to define a methodology for assessing the energy efficiency of water supply systems. In particular, water losses in water distribution systems, generally assessed in relation to the quantity of high quality water dispersed in the environment, are herein considered in relation to their energy content. In addition to the evaluation of energy balance using the approach proposed by Enrique Cabrera et al. in ‘Energy audit of water networks’ (see J. Water Res. Plan. Manage.136 (6), 669–677) an overall efficiency indicator WSEE (Water Supply Energy Efficiency) is then proposed. Its decomposition finally leads to the definition of further indicators, which may help to assess how the structure of the network, leakage rate and/or pumps affect the energy efficiency of the water system. Such indicators can be used to compare different water supply systems and to identify the impact of individual interventions. The proposed energy analysis was applied to two case studies in Northern Italy.

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