An application of a novel technique to filter induced malfunctions from intrinsic ones in the field of the thermoeconomic diagnosis is presented here for the particular case of a pulverized coal-fired steam boiler. The steam boiler is part of a 350 MWe power plant located at Teruel, Spain. The thermoeconomic diagnosis developed here is underpinned by the exergy cost theory. Through application of this new technique, it is attempted to show that it allows to detect, localize and quantify more easily and precisely the causes of the malfunctions in large thermal systems, as well as the direct impact that malfunctions have on the consumption of resources. In order to do so, a hypothetical scenario of anomalies occurring in the system is proposed here. The scenario is obtained by a simulator of the steam generator which determines the operating condition corresponding to the presence of the different anomalies. The results reveal that the technique is a reliable procedure that can assist to detect more easily the causes of the malfunctions.

1.
Valero
A.
,
Correas
L.
,
Lazzaretto
A.
,
Rangel
V.
,
Reini
M.
,
Taccani
R.
,
Toffolo
A.
,
Verda
V.
, and
Zaleta
A.
,
2004
. “
Thermoeconomic philosophy applied to operating analysis and diagnosis of energy utilty systems
.”
Int. J. Thermodynamics
,
7
(
2
) June, pp.
33
39
.
2.
Valero, A., and Lozano, M. A., 1987. “Application of the exergetic cost theory to a steam boiler in a thermal generating station.” In ASME AES: Computer-Aided Engineering and Energy Systems, M. J. Moran, S. S. Steco, and G. M. Reistad, Eds., ASME Book: G0377B, ASME, pp. 41–51.
3.
Lozano, M. A., L., B. J., and Valero, A., 1994. “Thermoeconomic diagnosis of energy systems.” In Flowers 94-Florence World Energy Research Symposium.
4.
Reini, M., A., L., and A., M., 1995. “Average strutural and marginal costs as result of a unified formulation of the thermoeconomic problem.” In Proceedings of Second Law Analysis of Energy Systems: Towards the 21st Century.
5.
Stoppato, A., and Lazzaretto, A., 1996. “The exergetic analysis for energy system diagnosys.” In AES: Thermodynamics and the Design, Analysis and Improvement of Energy Systems. ASME.
6.
Zaleta, A., 1997. Conceptos Sobre el Diagnstico y la Evaluacin Termoeconmica de Turbinas de Vapor. PhD thesis, University of Zaragoza. In Spanish.
7.
Zaleta
A.
,
Royo
J.
,
Rangel
V.
, and
Torres
E.
,
2004
. “
Thermocharacterization of power systems components: A tool to diagnose their malfunctions
.”
ENERGY
,
29
, pp.
361
377
.
8.
Verda, V., 2001. Thermoeconomic Diagnosis of an Urban District Heating System Based on Cogenerative Steam and Gas Turbines. PhD thesis, University of Zaragoza and Politecnico di Torino. In English.
9.
Correas, L. C., 2001. Thermoeconomic Diagnosis of the Operation of Combined Cycles. PhD thesis, University of Zaragoza. In Spanish.
10.
Uche, J., 2000. Thermoeconomic Analysis and Simulation of a Combined Power and Desalination Plant. PhD thesis, University of Zaragoza.
11.
Lazzaretto
A.
, and
Toffolo
A.
,
2004
. “
On the thermoeconomic approach to the diagnosis of energy system malfunctions, indicators to diagnose malfunctions: Application of a new indicator for the location of causes
.”
Int. J. Thermodynamics
,
7
(
2
) June, pp.
41
49
.
12.
Valero, A., 1999. “Qualifying irreversibilities through second law: Exergy accounting.” In Third Gordon Research Conference: Modern Developments in Thermodynamics, pp. 1–20.
13.
Torres, C., and Valero, A., 2001. Curso de doctorado: Ter-moeconomia.
14.
Torres, C., Valero, A., Serra, A., and Royo, J., 1999. “Structural theory and thermoeconomic diagnosis, part i: On mal-function and dysfunction analysis.” In Proceedings of the ECOS’99, The American Society of Mechanical Enegineers, pp. 368–373.
15.
Valero
A.
,
Torres
C.
, and
Lerch
F.
,
1999
. “
Structural theory and thermoeconomic diagnosis, part iii: Intrinsic and induced malfunctions
.”
Energy Conversion and Management
(
40)
, pp.
1627
1649
.
16.
Verda
V.
,
2004
. “
Thermoeconomic analysis and diagnosis of energy utility systems, from diagnosis to prognosis
.”
Int. J. Thermodynamics
,
7
(
2
) June, pp.
73
83
.
17.
Valero
A.
, and
Lozano
M. A.
,
1993
. “
Theory of the exergetic cost
.”
Energy
,
18
(
9
), pp.
939
960
.
18.
Uche
J.
,
Serra
L.
, and
Valero
A.
,
2001
. “
Thermoeconomic optimization of a dual-purpose power and desalination plant
.”
Desalination
,
136
, pp.
147
158
.
19.
Lozano, M. A., 1987. Metodologia para el Analisis Exergetico de Calderas de Vapor en Centrales Termicas. PhD thesis, University of Zaragoza, Spain. In Spanish.
20.
Frangopoulos, C. A., 1983. Thermoeconomic Functional Analysis: A Method for Optimal Design or Improvement of Complex Thermal Systems. PhD thesis, Georgia Institute of Technology.
21.
Tsatsaronis
G.
, and
Winhold
M.
,
1985
. “
Exergoeconomic analysis and evaluation of energy-conversion plants-i. a new general methodology
.”
ENERGY, The International Journal
,
10
, pp.
69
80
.
22.
Reini
M.
, and R., T.,
2003
. “
On the thermoeconomic approach to the diagnosis of energy system malfucntions
.”
Int. J. Thermodynamics
,
7
, pp.
61
72
.
23.
Lior, N., 2001. “Irreversibility in combustion.” In Proceedings of the 14th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy Systems, pp. 39–48.
24.
Rangel, V. H., Uson, S., Valero, A., and Cortes, C., 2004. “Basics of a microscopic representation of the exergy cost theory.” In Energy-Efficient, Cost-Effective and Environmentally-Sustainable Systems and Processes, R. Rivero, L. Monroy, R. Pulido, and G. Tsatsaonis, Eds., vol. 2, Instituto Mexicano del Petroleo, pp. 551–560.
25.
Rangel, V. H., Uson, S., Valero, A., and Cortes, C., 2004. “Local exergy cost theory.” In Proceedings of DETC’ 2004: ASME International Mechanical Engineering Congress, ASME, Ed.
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