Quantitative engineering systems modeling and analysis of the energy–water nexus

Lubega, William Naggaga; Farid, Amro M.

doi:10.1016/j.apenergy.2014.07.101

Cited by 96 publications

(28 citation statements)

References 24 publications

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“…However, the integration of energy and water usage has attracted the attention of many researchers who are involved in city planning and operation (Kahrl & Roland-Holst, 2008;Mohammadi et al, 2008;Khan et al, 2009;Dale et al, 2011). The 'energy-water nexus' concept has been investigated extensively and, therefore, increasingly highlighted as an important issue (Siddiqi & Anadon, 2011;Ackerman & Fisher, 2013;Lubega & Farid, 2014;Santhosh et al, 2014aSanthosh et al, , 2014bSanthosh et al, 2014aSanthosh et al, , 2014b. Studies have been carried out to examine the role of energy consumption in urban water supplies, water distribution, and wastewater treatment processes (Kenway et al, 2008;Miller et al, 2012;Nowak et al, 2015).…”

Section: Introductionmentioning

confidence: 98%

Interaction relationship between urban domestic energy consumption and water use – a case study of Beijing and Shanghai

et al. 2015

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Energy consumption and water use are inextricably linked. Combining research on energy consumption and water use in an urban context provides a scientific basis for the integrated planning of energy and water supply systems. Domestic energy and water are among the most consumed resources in urban environments. Furthermore, domestic resources represent an increasing proportion of the total resources consumed. This paper explores four key indicators of urban energy consumption (UEC) and water use in Beijing and Shanghai for the period of 2000 to 2011. Using correlation analysis, this study establishes the intrinsic relationship between UEC and water use. It also offers an analysis of the consumption trends of these two resources as well as their interactive relationship. The results show that urban domestic energy consumption (UDEC) and water use have a significant linear correlation: UDEC is positively correlated with water use, and the correlation coefficients of Beijing and Shanghai are 0.81 and 0.97, respectively. In Beijing, urban domestic energy and water use per capita are negatively correlated, with the high correlation coefficient of 0.93. In Shanghai, urban domestic energy and water use per capita are positively correlated, with the correlation coefficient of 0.90. Nomenclature UPurban population UEC urban energy consumption UWU urban water use Water

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Section: Introductionmentioning

confidence: 98%

Interaction relationship between urban domestic energy consumption and water use – a case study of Beijing and Shanghai

et al. 2015

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“…This poses significant challenges to the increased deployment of energy technologies, which require water, and is particularly critical for those regions with poor and limited renewable water resources. These constraints are magnified further in highly populated, high energy demanding, and industrialized regions where water demand for energy is projected to increase, vis‐a‐vis demand by other sectors …”

Section: Introductionmentioning

confidence: 99%

“…These constraints are magnified further in highly populated, high energy demanding, and industrialized regions where water demand for energy is projected to increase, vis-a-vis demand by other sectors. [5] In the UK, the Climate Change Act 2008 stipulates an ambitious target of reducing GHG emissions by 80% on 1990 levels by 2050. [6] The transition to a low-carbon energy system is considered a top priority, as demonstrated through the Energy Act 2013, [7] with the rolling out of Electricity Market Reform which has been designed to accelerate the delivery of low-carbon and renewable energy deployment and climate change targets at lower cost while maintaining reliability.…”

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confidence: 99%

Catchment Level Water Resource Constraints on UK Policies for Low‐Carbon Energy System Transitions by 2030

Konadu

Fenner

2017

Global Challenges

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Water and energy provision are intricately interdependent (although some low-carbon energy technologies are generally water neutral, e.g., solar photo voltaic (PV) and wind power). Water is required across most parts of the energy supply chain, particularly for the following activities: extraction and refining of fossil fuels, hydropower generation, thermal power plant cooling, and increasingly in the irrigation of bioenergy crops. Thus, delivering the required expansion and transition to low-carbon energy systems will have direct implications for water resource use. Whether these demands for water can be met sustainably needs to be more fully examined and understood. A key factor is how water resource availability varies across geographical regions. This poses significant challenges to the increased deployment of energy technologies, which require water, and is particularly critical for those regions with poor and limited renewable water resources. These constraints are magnified further in highly populated, high energy demanding, and industrialized regions where water demand for energy is projected to increase, vis-a-vis demand by other sectors. [5] In the UK, the Climate Change Act 2008 stipulates an ambitious target of reducing GHG emissions by 80% on 1990 levels by 2050. [6] The transition to a low-carbon energy system is considered a top priority, as demonstrated through the Energy Act 2013, [7] with the rolling out of Electricity Market Reform which has been designed to accelerate the delivery of low-carbon and renewable energy deployment and climate change targets at lower cost while maintaining reliability. [8] The main policy blueprint of the UK government's low-carbon energy system transition agenda are captured in the 2050 Carbon Plan, [9] and the legally sanctioned five-yearly Carbon Budgets of the Committee on Climate Change (CCC). These provide scenarios and pathways, which project different mixes of energy supply technologies to 2050. While these policies project the achievement of 80% GHG emissions reduction target at minimal cost to the UK economy, implications of this transition for sustainable environmental resources, principally water use, are not adequately dealt with. This is more important as some of the low-carbon energy technologies considered in these policy pathways are comparatively highly water intensive. In the UK water resource availability is highly spatially variable, there is therefore a limit on how much thermal generation could be deployed across different regions even though the technology The UK government has proposed different low-carbon energy system options that lead to meeting its greenhouse gas emissions target of 80% reduction on 1990 levels by 2050. While these energy system options meet emission targets at feasible economic cost, water requirement for the deployment of the proposed energy technology mix is not adequately accounted for. This may become critical, as some of the proposed energy technologies are relatively more water-intensive, and could result in sign...

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“…Also, the Water-Energy Nexus (WEN) from an engineering systems perspective has received little attention [16] and as Leck et al [17] argue, the operationalisation of the WEN has to date been largely a paper exercise. At the technological level some studies optimize coupling points between electricity and water systems to reduce water and energy intensity of technologies, although models do not cover all sectors.…”

Section: Literature Review On Unsolved Aspects Of the Problemmentioning

confidence: 99%

Cross-sectional Integration of the Water-energy Nexus in Brazil

Semertzidis¹,

Spataru²,

Bleischwitz³

2017

J. sustain. dev. energy water environ. syst.

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This paper analyses the cross-sectoral integration of the water-energy nexus in Brazil. Recent droughts resulted in unprecedented water scarcity. This caused water shortages for population and agriculture, as well as for electricity production (hydropower being the main source of electricity production). As a result, the system became more vulnerable to blackouts. To alleviate the problem, fossil fuels were used as a back up. Droughts, floods and other water-related problems will not dissipate as time goes by in Brazil. The dependency on one single predominant source (hydropower) makes Brazil's electricity supply vulnerable. This study shows through data analysis, flow diagrams and metrics the interrelation between water and energy. Based on historical data, the analysis shows the importance of the water demand for hydropower, cooling for thermal plants, and the extraction and production of biofuels, as well as of the energy demand of water services (water supply, wastewater treatment).

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Quantitative engineering systems modeling and analysis of the energy–water nexus

Cited by 96 publications

References 24 publications

Interaction relationship between urban domestic energy consumption and water use – a case study of Beijing and Shanghai

Interaction relationship between urban domestic energy consumption and water use – a case study of Beijing and Shanghai

Catchment Level Water Resource Constraints on UK Policies for Low‐Carbon Energy System Transitions by 2030

Cross-sectional Integration of the Water-energy Nexus in Brazil

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