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Energies 2018, 11(6), 1519; https://doi.org/10.3390/en11061519

Reliability and Maintenance Prioritization Analysis of Combined Cooling, Heating and Power Systems

1
Faculty of Environmental Engineering, the University of Kitakyushu, Kitakyushu 808-0135, Japan
2
School of Environmental and Municipal Engineering, Jilin Jianzhu University, Changchun 130118, China
*
Author to whom correspondence should be addressed.
Received: 5 May 2018 / Revised: 6 June 2018 / Accepted: 7 June 2018 / Published: 11 June 2018
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

A combined cooling, heating, and power (CCHP) system is a complex and repairable system containing a large number of components and series of subsystems. When a failure occurs in one component, it might cause a failure of a subsystem or whole system. Traditional maintenance methods might lead to the waste of maintenance resources and a high cost of maintenance. The reliability and maintenance prioritization analyses can help managers optimize maintenance strategies and reduce the total cost. A reliability importance index is one of the factors in maintenance prioritization analysis. This paper aims at selecting the component reliability importance indices to identify the priority of component maintenance of a CCHP system from the perspective of maintenance cost. Failure cost importance index (FCI) and Potential failure cost importance index (PI) are developed for the maintenance prioritization analysis of a CCHP system. A Markov model based on the state–space method (SSM) is used to analyze the reliability and availability of a CCHP system. A set of actual survey reliability data of CCHP systems is used to support the validity of the reliability importance indices. The results indicate that the FCI and PI might lead to different rankings of maintenance prioritization. The FCI and PI will help managers make a reasonable decision for maintenance on a cost basis. View Full-Text
Keywords: reliability analysis; maintenance prioritization; state-space method; Markov process; CCHP system reliability analysis; maintenance prioritization; state-space method; Markov process; CCHP system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Jiang, J.; Wei, X.; Gao, W.; Kuroki, S.; Liu, Z. Reliability and Maintenance Prioritization Analysis of Combined Cooling, Heating and Power Systems. Energies 2018, 11, 1519.

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