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Estimate the useful life for a heating, ventilation, and air conditioning system on a high-speed train using failure models
Department of information engineering, University of Florence via di S. Marta 3, 50139, Florence, Italy.
Department of information engineering, University of Florence via di S. Marta 3, 50139, Florence, Italy.
Department of information engineering, University of Florence via di S. Marta 3, 50139, Florence, Italy.
Department of information engineering, University of Florence via di S. Marta 3, 50139, Florence, Italy.
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2021 (English)In: Acta IMEKO, ISSN 0237-028X, Vol. 10, no 3, p. 100-107Article in journal (Refereed) Published
Abstract [en]

Heating, ventilation, and air conditioning (HVAC) is a widely used system used to guarantee an acceptable level of occupancy comfort, to maintain good indoor air quality, and to minimize system costs and energy requirements. If failure data coming from company database are not available, then a reliability prediction based on failure rate model and handbook data must be carried out. Performing a reliability prediction provides an awareness of potential equipment degradation during the equipment life cycle. Otherwise, if field data regarding the component failures are available, then classical reliability assessment techniques such as Fault Tree Analysis and Reliability Block Diagram should be carried out. Reliability prediction of mechanical components is a challenging task that must be carefully assessed during the design of a system. For these reasons, this paper deals with the reliability assessment of an HVAC using both failure rate model for mechanical components and field data. The reliability obtained using the field data is compared to the one achieved using the failure rate models in order to assess a model which includes all the mechanical parts. The study highlights how it is fundamental to analyze the reliability of complex system integrating both field data and mathematical model.

Place, publisher, year, edition, pages
International Measurement Confederation (IMEKO) , 2021. Vol. 10, no 3, p. 100-107
Keywords [en]
Reliability, Diagnostic, Railway engineering, failure rate, HVAC, useful life
National Category
Control Engineering
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-88091DOI: 10.21014/ACTA_IMEKO.V10I3.1058Scopus ID: 2-s2.0-85119069761OAI: oai:DiVA.org:ltu-88091DiVA, id: diva2:1615240
Note

Godkänd;2021;Nivå 0;2021-11-29 (johcin)

Available from: 2021-11-29 Created: 2021-11-29 Last updated: 2021-12-21Bibliographically approved

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Galar, Diego

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