Continuous/discrete simulation of controlled atmosphere (CA) cool storage systems: model development and validation using pilot plant CA cool storage

A continuous/discrete simulation of controlled atmosphere (CA) cool storage systems: validation using industrial CA cool storage

“…The models of the different components as discussed in Nahor et al [6] were employed with slight modification of the components such as the evaporator control system, the product model (to encompass the loading strategy), the nitrogen generator and carbon dioxide scrubber and their respective control mechanisms. The modification made to the latter two modules is outlined hereafter.…”

“…The single zone energy and mass balance approach was pursued in developing these modules of the product model. The details of the model and the justification for the assumptions are given in [6,13]. The continuous model structure discussed in Nahor et al [6] for the product model was not altered.…”

“…The details of the model and the justification for the assumptions are given in [6,13]. The continuous model structure discussed in Nahor et al [6] for the product model was not altered. However, discrete event statements were required to implement the stepwise product loading in the room.…”

“…Models that describe the complete cool/cold storage systems have been proposed by some investigators [1][2][3][4][5][6]. Often, validation of such complete refrigeration system simulation models is restrained by the limitation of obtaining experimental data for all the model variables and space and time restrictions in obtaining and presenting the results.…”

“…Recently, Nahor et al [6] proposed a complete controlled atmosphere cool storage system model based on lumped parameter analysis (thermal model) that was validated by means of experimental data obtained from a pilot CA cool storage facility. Even though, the pilot facility is a good contrivance to test the proposed model by means of controlled experiments, several operational conditions such as loading of the product according to a scheme and/or opening of the doors were not realistic representations of an industrial operation.…”