On the choice of performance assessment criteria and their impact on the overall system performance — The refrigeration system case study

The aim of this paper is to illuminate the impact of the choice of a system´s performance criteria on the quality of the corresponding monitoring system´s assessment results. Special attention is given to the performance issues that are caused by or can be solved by control actions. The compressor capacity gap issue in the supermarket refrigeration systems is used as a case study to elaborate on the problem through employment of both real life field data as well as simulation data. A performance function that can capture the compressor capacity gap problem is presented in the paper and used to evaluate both data from the real supermarket system and the data generated by the simulation model.