A Review of Energy Assessment Methodology for Water Supply Systems

Bylka, Jędrzej; Mróz, Tomasz

doi:10.3390/en12234599

Cited by 13 publications

(3 citation statements)

References 31 publications

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“…Later, the interest extended to assess the energy losses due to friction and leakage in water networks [4,7,8]. Bylka and Mroz [9] reviewed energy assessment methods for water supply systems and categorized them into two groups. While the first group is based solely on data collected in water utilities, the second one is based on both the data and modelling of physical processes.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Estimation of Energy Balance Components in Water Networks for Top-Down Approach

Lipiwattanakarn

Kaewsang

Charuwimolkul

et al. 2021

Water

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The energy balance calculation for pressurized water networks is an important step in assessing the energy efficiency of water distribution systems. However, the calculation generally requires mathematical modelling of the water networks to estimate three important energy components: outgoing energy through water loss (), friction energy loss () and energy associated with water loss (). Based on a theoretical energy balance analysis of simplified pipe networks, a simple method is proposed to estimate , and with minimum data requirements: input energy, water loss (WL) and head loss between the source and the minimum energy point (ΔH). By inclusion of the head loss in water networks into the estimation, the percentages of and are lower and higher, respectively, than using only the percentage of WL. The percentage of can be a function of the percentage of ΔH. By demonstrating our analysis with the simulation results from the mathematical models of 20 real water networks, the proposed method can be used to effectively estimate , and as a top-down energy balance approach.

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Section: Introductionmentioning

confidence: 99%

Theoretical Estimation of Energy Balance Components in Water Networks for Top-Down Approach

Lipiwattanakarn

Kaewsang

Charuwimolkul

et al. 2021

Water

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“…Although several case studies provide relevant information about the energy consumption intensity stage-by-stage [14,15], it is necessary to propose methodologies that allow a holistic evaluation of energy consumption and efficiency in UWSs. A recent study [16] pointed out the need for clarification of metrics to establish a unified energy assessment terminology and sound methodologies that are applicable even if the utilities do not have a complete set of data.…”

Section: Introductionmentioning

confidence: 99%

The Development of a Framework for Assessing the Energy Efficiency in Urban Water Systems and Its Demonstration in the Portuguese Water Sector

Loureiro

Silva

Cardoso

et al. 2020

Water

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Urban water systems (UWSs) are energy-intensive worldwide, particularly for drinking-water pumping and aeration in wastewater treatment. Usual approaches to improve energy efficiency focus only on equipment and disregard the UWS as a continuum of stages from source-to-tap-to-source (abstraction/transport—treatment—drinking water transport/distribution—wastewater and stormwater collection/transport—treatment—discharge/reuse). We propose a framework for a comprehensive assessment of UWS energy efficiency and a four-level approach to enforce it: overall UWS (level 1), stage (level 2), infrastructure component (level 3) and processes/equipment (level 4). The framework is structured by efficiency and effectiveness criteria (an efficient but ineffective infrastructure is useless), earlier and newly developed performance indicators and reference values. The framework and the approach are the basis for a sound diagnosis and intervention prioritising, and are being tested in a peer-to-peer innovation project involving 13 water utilities (representing 17% of the energy consumption by the Portuguese water sector in 2017). Results of levels 1–3 of analysis herein illustrated for a water utility demonstrate the framework and approach potential to assess UWS effectiveness and energy efficiency, and to select the stages and infrastructures for improvement and deeper diagnosis.

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“…The population growth, urbanization, and modifications in the sanitation systems are processes potentially important for the assessment of the environmental quality of the river basins. The interest to study the methods of evaluating and audit the efficiency of the sanitation services is growing, particularly to energy efficiency, reduce water losses and security (XIN et al, 2014;LIVSHITZ et al, 2017;FRAIA et al, 2018;BYLKA et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Substantive audit testing of sewer systems using Brazilian open database: stat methods for compliance screening

Garcia¹,

Olinda²,

Barbosa³

et al. 2020

RICA

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The monitoring of data and the management of information are important tools for the decision-making and guidance of investments, which is a crucial procedure for the effective capital opening of the sanitation sector. The research aims at analyzing the correlation of urban population growth with the variables of importance for evaluating the overall performance of sanitary sewage systems. The study was developed based on raw data and indicators, in the long term period (1999 to 2017), with the information provided by the service providers themselves to the SNIS (national system of information on sanitation). The methodology consists of an application of a substantive test, following the guidelines of ISO 19.011 :2018, NBC TI 01 and, NBC PI 01: 2012, where the structure is presented in the format of the analytical review. For the validation of the test, statistical routines were used. Scores were elaborated to determine the probable inconsistencies found during the statistical routine, where the results, denominated evidence by the audit, were divided into conformities and non-conformities, being indicated 19 conformities and seven non-conformities. It is concluded that the methodology used can help evaluate public domain data and generate subsidies for sector managers and investors.

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A Review of Energy Assessment Methodology for Water Supply Systems

Cited by 13 publications

References 31 publications

Theoretical Estimation of Energy Balance Components in Water Networks for Top-Down Approach

Theoretical Estimation of Energy Balance Components in Water Networks for Top-Down Approach

The Development of a Framework for Assessing the Energy Efficiency in Urban Water Systems and Its Demonstration in the Portuguese Water Sector

Substantive audit testing of sewer systems using Brazilian open database: stat methods for compliance screening

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