IMPROVED DYNAMIC SIMULATION OF MULTITEMPERATURE INDUSTRIAL REFRIGERATION SYSTEMS FOR FOOD CHILLING, FREEZING AND COLD-STORAGE

Three refrigeration system simulation environments were used to simula te the performance of two large industrial refrigeration systems used for meat processing. A recently published model for predicting heat re lease during cooling and freezing enabled the performance of freezers to be predicted more accurately than by earlier models. Weaknesses in room air models and a need for models of room walls to consider their thermal capacity, as well as their thermal resistance, were identified . Significant advantages compared to previous simulation environments an demonstrated for an object-oriented environment for refrigeration s ystem simulation. It enables new models for components of a refrigerat ion system to be quickly incorporated as they become available. (C) 19 98 Elsevier Science Ltd and IIR. All rights reserved.