AVAILABILITY ASSESSMENT FOR AGING REFRIGERATION SYSTEM BY USING LZ-TRANSFORM
This paper presents a case study of z L -transform method application to calculation of availability for complex aging refrigeration system. The system and its components can have different performance levels ranging from perfect functioning to complete failure and, so it is treated as a multi-state system. Straightforward Markov method applied to solve the problem will require building of the system model with numerous numbers of states and solving a corresponding system of differential equations. z L -transform method, which is used for computation of availability for such refrigeration system, drastically simplified the solution.