(128d) An Integrated Demand and Supply Modeling Approach for the Energy System Design of a New Urban Area
- Conference: AIChE Annual Meeting
- Year: 2019
- Proceeding: 2019 AIChE Annual Meeting
- Group: Sustainable Engineering Forum
- Time: Monday, November 11, 2019 - 1:45pm-2:10pm
Urban energy systems can be defined as the combined process of energy extraction, conversion, transmission and distribution, storage, and end-use to meet the energy service demand in a given urban area (Jaccard, 2006; Keirstead et al., 2012; Blok & Nieuwlaar, 2016). In energy system design studies, energy demand data are often inputted exogenously, while many studies focus on the retrofit of existing urban energy systems (Keirstead et al., 2012). However, for the development of a new urban area, the prediction of energy demand would be vital. Xiongâan is a new urban area under planning and construction in Hebei, China, and aims in developing safe, green, and efficient energy systems. An integrated model for urban energy systems design of new urban areas is needed to address the theoretical and practical problems and achieve the development goal.
In this work, we developed an urban energy system design tool that is able to provide the optimal energy system design and operation plan for the development of a new urban area. The urban area is divided into several clusters to grasp the demand and supply patterns in each subarea and to show energy flow inside the city. For the demand side, we implemented activity-based energy demand prediction, deriving building energy demand from observing occupantsâ activity patterns. For the supply side, a superstructure framework is developed that contains different options for energy sources, energy conversion and storage technologies and energy networks. The resulting integrated supply and demand model is represented as a mixed-integer linear model that can be solved to global optimality. Furthermore, multi-objective optimization is implemented to reveal the trade-offs among economic costs, greenhouse gas emissions, and air pollution. The developed framework will be demonstrated through case studies, illustrating the capabilities of the proposed tool as a good test bed for technical decisions or policy scenarios in a newly developing urban area.
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