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β-characterization by irreversibility analysis: A thermoeconomic diagnosis method

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  • Zaleta-Aguilar, Alejandro
  • Olivares-Arriaga, Abraham
  • Cano-Andrade, Sergio
  • Rodriguez-Alejandro, David A.

Abstract

This paper presents a reconciliation methodology for the diagnosis of energy systems. The methodology is based on the characterization of irreversibilities in the components of an energy system. These irreversibilities can be attributed to malfunctions or dysfunctions. The characterization of irreversibilities as presented here makes possible to reconcile the Actual Operating Condition (AOC) versus the Reference Operating Condition (ROC) of the energy system in a real-time manner. The diagnosis methodology introduces a parameter β, which represents the total exergy or useful work of a component in terms of its inlet and output streams at either design (full-load) or off-design (partial-load) conditions. The methodology is applied to the diagnosis of an actual Natural Gas Combined Cycle (NGCC) power plant. Data for the model is obtained directly from the plant by monitoring its performance at every time; thus, a real-time thermodynamic diagnosis for the system is obtained. Results show that the methodology presented here is able to detect and quantify the deviations on the performance of the NGCC power plant during its real-time operation. Based on the detection and quantification of these deviations, the user is able to make recommendations to schedule maintenance on the components where the irreversibilities are present.

Suggested Citation

  • Zaleta-Aguilar, Alejandro & Olivares-Arriaga, Abraham & Cano-Andrade, Sergio & Rodriguez-Alejandro, David A., 2016. "β-characterization by irreversibility analysis: A thermoeconomic diagnosis method," Energy, Elsevier, vol. 111(C), pages 850-858.
    • Handle: RePEc:eee:energy:v:111:y:2016:i:c:p:850-858
    DOI: 10.1016/j.energy.2016.06.012
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    References listed on IDEAS

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    1. Verda, Vittorio & Baccino, Giorgia, 2012. "Thermoeconomic approach for the analysis of control system of energy plants," Energy, Elsevier, vol. 41(1), pages 38-47.
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    1. Amorim Lorenzoni, Raphael & Conceição Soares Santos, José Joaquim & Barbosa Lourenço, Atilio & Marcon Donatelli, João Luiz, 2020. "On the accuracy improvement of thermoeconomic diagnosis through exergy disaggregation and dissipative equipment isolation," Energy, Elsevier, vol. 194(C).

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