Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Critical Transmission Sectors of Energy-Water-GHG Nexus
Wang, Xuechao ; Ditl,, Pavel (oponent) ; Nizetic, Prof Sandro (oponent) ; Dr hab. inż. Paweł Ocłoń, prof. PK (oponent) ; Klemeš, Jiří (vedoucí práce)
Water utilisation, energy consumption and Greenhouse Gas (GHG) emissions are crucial indicators and very much related for maintaining or achieving the Environmental and social sustainability. This thesis presents the methodologies have been developed and case studies have been conducted to explore and identify the Water-Energy-GHG Nexus (WEGN) from the supply chain perspective. Three methodologies which are based on the application and integration of the Input-Output (IO) model, Geographic Information System (GIS) and Supply Chain Network (SCN) are proposed, for analysing and designing the WEGN network, while also addressing challenges that have previously prevented practical implementation. The applicability of these methodologies is demonstrated by three comprehensive case studies focused on the sectoral environmental efficiency, regional environmental efficiency and critical transmissions of WEGN. My contributions to the field include: i. Novel IO based assessment tool for identifying regional environmental efficiency in terms of WEGN, especially for the regions that are closely connected by interregional trade. ii. Sophisticated Integrating the GIS and IO methodologies (GIS-IO) to reveal and map WEGN network, tracking the critical inter-regional and -sectoral WEGN flows, clarifying the regional, sectoral and worldwide patterns of WEGN network, and identifying the associated benefits for different regions. iii. Efficient IO and SCN based assessment approach (IO-SCN) for quantifying the sectoral WEGN coefficients. The proposed methodologies, with the support of a set of comprehensive underlying equations, transform the complicated WEGN network identification and analysis challenges into an easily understandable format, from which arises robust solutions for improving environmental sustainability assessment and mitigating environmental pressures. As an example in one of the case studies, the results run by the novel approach of GIS-IO reveals that apparent disparities between different countries within EU27, different sectors, as well in the EU27 as a block of nations compared and the rest of the world. The EU27 countries contributed 1.4 Gt less CO2 emissions, 64.5 Gm3 less water utilisation and 4.9×104 PJ less energy consumption, compared to the rest of the world, while generating the equivalent economic output. This has a dramatic effect on the global environment. Germany, France and Italy benefited most in the CWE network in the EU27. We recommend that the EU27 provide more technical support to upstream countries to improve the efficiency of resource utilisation.
EXTENDED METHODOLOGY FOR WATER RESOURCES AND WATER-RELATED ENERGY ASSESSMENT ADDRESSING WATER QUALITY
JIA, Xuexiu ; Ditl,, Pavel (oponent) ; Dr hab. inż. Paweł Ocłoń, prof. PK (oponent) ; Dr. Aoife M. Foley (oponent) ; Varbanov, Petar Sabev (vedoucí práce)
Water issues, especially water scarcity and water pollution, have been affecting human lives and economic developments for a long time. Global climate changes exacerbate the probability and frequency of extreme events such as water scarcity and severe floods. The increasing irregular water supply and water pollution issues require more advanced water resources assessment methodologies to guide practical water use and management. This thesis presents the extended methods for water quantity-quality assessment and water-related energy consumption and emissions. Three major methodologies are proposed based on the Water Footprint concept and Water Pinch Analysis frameworks to assess the quantity and quality impact of water use. These methods are also demonstrated with numerical and empirical case studies targeting regional and industrial water resource assessment and optimisation. In addition, the Water-Energy Nexus is discussed to investigate the water issues from a broader perspective. An initial assessment of the water-related energy and GHG emissions of the seawater desalination industries is carried out. The studies in this thesis convey several contributions to the current water resource assessment methodologies. The proposed Water Availability Footprint made an initial effort to cover the water quality degradation impact into the existing water scarcity assessment frameworks, which was not addressed previously. The second contribution of this work is the proposal of the Quantitative-Qualitative Water Footprint (QQWFP), where a cost-based water footprint is defined and determined with the total cost of water consumption and removing contaminants generated during the water use process. The cost-based water footprint provides results which are more intuitive for water managers and the public and can better guide industrial and regional water use and management. The third contribution is the development of the Water Scarcity Pinch Analysis (WSPA), which applied the Water Pinch Analysis at a macro level for regional water use assessment and optimisation. All three proposed methods determine the water use impact in terms of water quantity and quality, and the QQWFP and WSPA also cover the impact of multiple contaminants. In addition to seeking solutions, this thesis also proposes potential directions for future investigations. Significant potential aspects to be further discussed include 1) a more advanced quantification method of the impact of multiple contaminants, and 2) an implementation and economic feasibility analysis of the WSPA and QQWFP with localised data, which seek a customised solution to regional and industrial water use optimisation.

Chcete být upozorněni, pokud se objeví nové záznamy odpovídající tomuto dotazu?
Přihlásit se k odběru RSS.