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Modelling a water-air conditioning system of a large commercial building for energy consumption evaluation
Pellegrini R.L.S.; de Araujo N.M.; de Gouvea M.T. (2018)
© 2018 Elsevier B.V.In this paper, a mathematical model used to represent the thermal behavior of an air conditioning water-air system applied to a large commercial building is proposed to represent its operation. Thermodynamic properties of refrigerant are rigorously modelled as well as subcooling and superheating of refrigerant inside the chiller. A simplified first principle model is presented for the description of the several conditioned rooms. The proposed model is used to evaluate the dynamic behavior of the system when subjected to external ambient air and thermal load disturbances. System response to step changes in the main manipulated variables are also shown.