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Optimal design of CHCP plants in the civil sector by thermoeconomics

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  • Cardona, E.
  • Piacentino, A.

Abstract

The optimization of design and operation of trigeneration plants for civil applications is a very complex task, because of the large number of internal and external variables affecting the energetic and economic results that may be achieved. Further, energy-saving and profit-oriented optimization processes usually lead to different solutions, in terms of plant lay-out, optimal size of components and operation strategy. Thermoeconomic methodologies are very effective theoretical structures for the optimization of industrial energy-systems characterised by regular energy-demand profiles; however, they are hard to use when approaching civil applications and energy systems in unsteady operating-conditions. In this paper, the potential of thermoeconomics for the analysis of CHCP applications in buildings is explored; two main procedures to address the problem are presented, a simplified design optimization and a detailed integrated optimization of plant lay-out and operation. The former approach, based on the use of aggregate consumption data, is described more in detail and finally applied to a trigeneration plant serving a 300-bed hospital, situated in a Mediterranean area; the results are finally compared with those available in the literature and determined by using demand cumulative curves or numerical methods.

Suggested Citation

  • Cardona, E. & Piacentino, A., 2009. "Optimal design of CHCP plants in the civil sector by thermoeconomics," Applied Energy, Elsevier, vol. 84(7-8), pages 729-748, July.
    • Handle: RePEc:eee:appene:v:84:y:2009:i:7-8:p:729-748
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    References listed on IDEAS

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