Simulation Model of Dynamic Behaviour of Refrigerated Products in a Ship’s Refrigerated Container

Abstract

Na temelju razvijenoga matematičkog modela, te konstrukcijskih karakteristika ispitivanoga rashladnog kontejnera, njegova rashladnog agregata i karakteristika hlađenoga tereta izrađen je simulacijski model dinamičkog ponašanja hlađenoga tereta. Prezentirani model dio je dinamičkog modela za cjelokupni sustav brodskoga rashladnog kontejnera koji, uz hlađeni teret, uključuje: kontejnerske stijenke, vlažni zrak u kontejneru, kondenzacijsku jedinicu, isparivač, kontejnersku opremu, ventilator isparivača i grijač odmrzivača. Ispitivanje je provedeno na 12,2-metarskom (40- -stopnom) rashladnom kontejneru. Za modeliranje i simulaciju koristilo se metodom sistemske dinamike (System Dynamics) i simulacijskim programom Powersim. Dinamički model hlađenoga tereta u brodskome rashladnom kontejneru verificiran je na temelju usporedbe rezultata simulacije s empirijski očekivanim kvalitativnim podacima.Simulation model of dynamic behaviour of refrigerated products has ben based on the developed mathematical model, constructional characteristics of the tested container, its refrigeration plant and characteristics of refrigerated products. The model presented is a part of dynamic model of the complete ship’s refrigerated container system, whose individual subsystems are refrigerated products, container wall, refrigerated humid air in the container, condensation unit, evaporator, container outfit, evaporator fan and defroster heater. The research has been conducted on a 12,2-metre (40-foot) refrigerated container. The method of System Dynamics and Powersim simulation program have been used for modelling and simulation. The dynamic model of the refrigerated products in a ship’s refrigerated container has been verified and conformed by the comparison of simulation results with empirical qualitative data

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