Article,

Modelling and Transient Simulation of $CO_2$-refrigeration Systems with Modelica

, and .
International Journal of Refrigeration, 27 (1): 42--52 (2004)
DOI: 10.1016/S0140-7007(03)00098-7

Abstract

This paper presents the current results of the development of a Modelica library for CO2-refrigeration systems based on the free Modelica library ThermoFluid. The development of the library is carried out in a research project of Airbus Deutschland and the \TUHH\ and is focused on the aim to obtain a library for detailed numerical investigations of refrigeration systems with the rediscovered refrigerant carbon dioxide (CO2). A survey of the concept of an integrated on-board cooling system of airliners, the modelling language Modelicaâ„¢ and the CO2-library is given and the modelling of CO2-heat exchangers is described. A comparison with steady state results of heat exchangers shows a fair agreement. The presented transient simulation results are compared with experimental data showing also a fair agreement.

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