Performance optimisation of serial chilled water system under m-out-of-n: G policy

Ibrahim Yusuf, Abdullahi Sanusi, Mus'abu Musa and Surajo Sulaiman

International Journal of Process Management and Benchmarking, 2024, vol. 16, issue 3, 376-399

Abstract: The present paper aimed at examining the performance of a multi-station chiller water system in terms of availability, reliability, mean time to failure (MTTF), sensitivity and expected profit under two types of repairs for rectifying non-lethal and lethal failure. Supplementary variable technique and Laplace transforms are used to establish and resolved the differential equations associated with transition diagram, which are essential to this research. The numerical validation of explicit expressions for system availability, reliability, MTTF, MTTF sensitivity, and profit function is performed. The results show that, the performance of the chiller system can be maximised by implementing m-out-of-n: G policy and adopting Type II (copula) repair restoring the system to perfect state. As a result, the findings of this research are thought to be valuable for analysing performance and determining the best system design and feasible maintenance strategies that may be used in the future to improve system performance.

Keywords: availability; performance; copula; chiller; optimisation; mean time to failure; MTTF. (search for similar items in EconPapers)
Date: 2024
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