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RESEARCH PAPERS

A Critical Review of the Thermoeconomic Diagnosis Methodologies for the Location of Causes of Malfunctions in Energy Systems

[+] Author and Article Information
Andrea Lazzaretto1

Department of Mechanical Engineering, University of Padova, via Venezia, 1-35151 Padova, Italyandrea.lazzaretto@unipd.it

Andrea Toffolo

Department of Mechanical Engineering, University of Padova, via Venezia, 1-35151 Padova, Italyandrea.lazzaretto@unipd.it

1

Corresponding author.

J. Energy Resour. Technol 128(4), 335-342 (May 09, 2006) (8 pages) doi:10.1115/1.2358148 History: Received April 01, 2005; Revised May 09, 2006

Thermoeconomic diagnosis procedures in the literature rely on the assumption that specific consumptions of resources in the components are the key to interpret the effects of malfunctions and then to trace a path towards the sources of anomalies. The main obstacle to a successful application of these approaches is represented by the actual interactions existing among components which cause a propagation of the alteration of component specific consumptions and therefore mask those effects that would allow a direct identification of the origin of malfunction. This paper presents an extensive discussion of potentialities and limits of diagnosis procedures proposed in the literature in distinguishing the effects induced by component interactions from those that are intrinsically generated by the anomaly, which is considered here as the main task to locate effectively causes of malfunctions in energy systems.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

Grahic Jump Location
Figure 1

A simple linear energy system (reference state)

Grahic Jump Location
Figure 2

A simple energy system with a physical recirculation (reference state)

Grahic Jump Location
Figure 3

Matrix formulation of malfunction and dysfunction analysis (see Ref. 12)

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