Abstract
The purpose of this paper is to describe the numerical modelling processes and optimization strategies of energy systems and to formalize an innovative optimization model for poly-generation systems. The model uses a multi-objective optimization approach, by means of three optimization functions: one of an economic nature, one technical and one relating to polluting emissions. The constraint equations of the problem, the boundary conditions and the input values, as well as some dimensionless parameters are described. In addition to a complete approach, the article proposes innovative aspects based on the studies in the literature, both from a technological and economic-regulatory standpoint. For each proposed innovation, an analysis of how this can influence the optimization model is presented and various types of optimization models have been evaluated, depending on the complexity of the physical system and the consequent numeric modelling.
Highlights
The new challenge for the whole energy sector is represented by the need of improving energy saving and efficiency, in order to allow a truly sustainable development
The optimization process can take place taking into account different energy policy scenarios, giving the possibility to evaluate in advance the "regulatory risk"
Cogeneration represents a valid possibility to guarantee a substantial increase in energy efficiency, leading to a reduction in consumption and polluting emissions
Summary
The new challenge for the whole energy sector is represented by the need of improving energy saving and efficiency, in order to allow a truly sustainable development. [1] The concept of sustainability in the energy sector is very broad, including climaticenvironmental aspects, and socio-political and economic aspects. The new challenge for the whole energy sector is represented by the need of improving energy saving and efficiency, in order to allow a truly sustainable development. Among the various technologies developed to increase energy efficiency and primary energy savings, cogeneration and trigeneration are widely studied in literature, representing one of the most valid alternatives, both on an industrial scale and for residential applications [2 - 6]. The definition of the optimization problem from a physical and economic point of view is described, evaluating the possible innovations to be introduced in the proposed model. Given the complexity of the problem, both from a physical and computational point of view, in the second part of the paper the use of multi-objective optimization is proposed, which allows to take into consideration different aspects that influence the optimal solution. An ad hoc formalized multi-objective model is described, containing three optimization function, which take into account economic, technical and environmental aspect
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