Abstract
Combined heat and power systems are widely recognized as a cost-effective solution for the achievement of sustainable and energy efficiency goals. During the last decade, cogeneration systems have been extensively studied from both the technological and operational viewpoints. However, the operation of a cogeneration system is a topic still worth of investigation. In fact, along with the determination of the optimal configurations of the combined heat and power systems, it is likewise fundamental to increase the awareness on the design and cost parameters affecting the operation of cogeneration systems, especially if considering the micro-grid in which they are inserted. In this direction, this paper proposed a mixed integer linear programming model with the objective of minimizing the total operational costs of the micro-grid. Different scenarios include the satisfaction of the cooling demands of the micro-grid as well as the opportuneness to include a heat storage. The influence of the main design and cost parameters on the operation of the micro-grid has been assessed by adopting the statistical tool ANOVA (Analysis Of Variance). The model and the experimental application of the ANOVA have been applied to a micro-grid serving a hospital located in the South of Italy.
Highlights
Combined heat and power (CHP) systems have been widely recognized as a promising solution to achieve energy sustainability targets [1]
This paper proposed a mixed integer linear programming model with the objective of minimizing the total operational costs of the micro-grid
Ren et al [2] developed a mixed integer non-linear programming (MINLP) model minimizing the annual cost of a residential CHP plant combined with a storage tank and a back-up boiler
Summary
Combined heat and power (CHP) systems have been widely recognized as a promising solution to achieve energy sustainability targets [1]. The aforementioned contributions are mainly focussed on the formulation of optimization models or deepened particular technological issues related to the main components of CHP within a micro-grid. In addition to these works, a substantial part of literature agrees on the need to determine the influence that a particular design parameter have on the CHP considered as a whole. Despite the efforts of the previous cited papers and except for the works [20] and [21], the current literature lacks the application of the ANOVA approach in the context of CHP operational planning, especially if considering a cogeneration plant operating in the context of a micro-grid and combined with an auxiliary boiler and a heat storage.
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