The use of refrigeration is essential in most of manufacturing processes in the food industry.The correct design and good operating of refrigeration systems as auxiliary systems of food processing systems is very important for success of production.Moreover, the refrigeration systems intake a great part of the total energy consumption in the food industry, like the frozen food plant.In addition, in the food process engineering, the advances in modelling and simulation techniques, permitting a better knowledge of process, make possible an increasing use of modelling applications at industry level.Moreover, the modelization of refrigeration systems may have a great incidence in the reduction of energy and manufacturing costs, and on the frozen food quality.Doubtless, modelization will be also useful to improve the control of refrigeration systems.The models developed in this thesis, implemented in C++ programation language, simulate the dynamic behaviour of refrigeration systems and process equipments, such as freezering equipments and frozen stores, at its service.Besides, these models are built with a reduced number of equations and parameters.In this manner they are simulated dynamically, the energy consumption of refrigerated systems and their most important working parameters, and, on the other hand, the air temperature inside the freezering equipments and frozen stores, and the most significant parameters in these equipments.Once the models are determined, there has been linearized to obtain, through the transformation of equations in a state variables system, the transfer functions necessary to proceed to the development of control systems.