Thermoeconomic approach to diagnosing malfunctions in a thermal power system

Chao Zhang*, Sheng Chen, Liming Liu, Chuguang Zheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The diagnostic technique based on the structure theory and symbolic thermoeconomics were applied to a 300MW pulverized coal fired power plant. Several typical malfunctions were analyzed by the thermodynamic simulation. The effects of these malfunctions on the irreversibility increase and fuel consumption in each component were quantitatively analyzed by so-called malfunction/dysfunction matrix (or fuel impact table). This method made up the insufficiencies of the conventional exergy methods. The results showed that: a. The increase of irreversibility might not be caused by the component, but in most cases it was caused by the dysfunctions induced by other components, b. In addition to the dysfunctions induced in other components, an inefficiency in a component can modify the efficiencies in other components and generate induced malfunctions, c. This method can reduce the range of searching the origins of the malfunctions. The induced malfunctions should be separated in order to identify the real causes.
Original languageEnglish
Pages (from-to)99-102
Number of pages4
JournalHuazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition)
Volume34
Issue number6
Publication statusPublished - Jun 2006
Externally publishedYes

Keywords

  • Exergy cost
  • Structure theory
  • Thermoeconomic
  • Thermoeconomic diagnosis

ASJC Scopus subject areas

  • General Computer Science

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