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Integrated Approach of Intelligent Asset Maintenance and Resource Conservation for Circular Economy
Chin, Hon Huin ; Ditl, Pavel (oponent) ; Hanika, Jiří (oponent) ; Kravanja, Zdravko (oponent) ; Klemeš, Jiří (vedoucí práce)
The rapid global industrialisation and urbanisation have placed heavy burdens on natural material resources consumption. For example, water scarcity and water pollution have been affecting human lives and economic developments for a long time, and resorting to clean fresh water has been becoming an important issue. The increasing irregular water supply and water pollution issues require more advanced water resources assessment methodologies to guide practical water use and management. Another well-known issue is the plastic waste accumulation in the option, which raises an alarming concern in achieving the optimal resources conservation network, striving towards the goal of Circular Economy. The Circular Economy concept not only focuses on resources conservation but also highlights the importance of maintaining and preserving the assets’ lifetime. This thesis is focused on developing advanced approaches for resources conservation and asset maintenance This thesis presents the extended analysis of Pinch-based methods in conserving the material resources for an industrial site. The major extensions involve the conceptual analysis on the resource conservation network that involves multiple qualities constraints, headers targeting and synthesis, and Total Site material conservation network synthesis. These methods serve as the graphical user interface for the users to select the preferable design options while ensuring the fresh resources consumptions are minimal. The study also extends the incorporation of different types of resources, such as heat and water, into the conservation network. The management issues such as resources management, subsidies and cost allocations are also studied for the eco-industrial site. Considering the asset’s lifetime prolongation, the long-term planning of a process or industrial site is incorporated in this study covering the assets’ age, depreciation and reliability. Process Integration tools are proposed to plan for the maintenance cost for a time period and workforce scheduling. The study is also extended to more analysis involving standby units and technologies investment for any process. Combining asset performance with resources conservation, the fault diagnosis and prognosis framework is applied to the Total Site/Eco-industrial park asset maintenance planning.
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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.
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Integrated Approach of Intelligent Asset Maintenance and Resource Conservation for Circular Economy
Chin, Hon Huin ; Ditl, Pavel (oponent) ; Hanika, Jiří (oponent) ; Kravanja, Zdravko (oponent) ; Klemeš, Jiří (vedoucí práce)
The rapid global industrialisation and urbanisation have placed heavy burdens on natural material resources consumption. For example, water scarcity and water pollution have been affecting human lives and economic developments for a long time, and resorting to clean fresh water has been becoming an important issue. The increasing irregular water supply and water pollution issues require more advanced water resources assessment methodologies to guide practical water use and management. Another well-known issue is the plastic waste accumulation in the option, which raises an alarming concern in achieving the optimal resources conservation network, striving towards the goal of Circular Economy. The Circular Economy concept not only focuses on resources conservation but also highlights the importance of maintaining and preserving the assets’ lifetime. This thesis is focused on developing advanced approaches for resources conservation and asset maintenance This thesis presents the extended analysis of Pinch-based methods in conserving the material resources for an industrial site. The major extensions involve the conceptual analysis on the resource conservation network that involves multiple qualities constraints, headers targeting and synthesis, and Total Site material conservation network synthesis. These methods serve as the graphical user interface for the users to select the preferable design options while ensuring the fresh resources consumptions are minimal. The study also extends the incorporation of different types of resources, such as heat and water, into the conservation network. The management issues such as resources management, subsidies and cost allocations are also studied for the eco-industrial site. Considering the asset’s lifetime prolongation, the long-term planning of a process or industrial site is incorporated in this study covering the assets’ age, depreciation and reliability. Process Integration tools are proposed to plan for the maintenance cost for a time period and workforce scheduling. The study is also extended to more analysis involving standby units and technologies investment for any process. Combining asset performance with resources conservation, the fault diagnosis and prognosis framework is applied to the Total Site/Eco-industrial park asset maintenance planning.
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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.
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