Seven-order Dynamic Model and Simulation of Compression Refrigeration System

To deal with the nonlinearity and high order in compression refrigeration system, a seven-order dynamic model including chilled water cycle is proposed. Based on analysis of the mechanism of the refrigeration system, this model which is described by two-phase lumped parameter method uses main parameters of the refrigeration system as state variables. The steady-state and dynamic performance of the model is confirmed well with simulation and experiment data. Compared with experimental model, this dynamic model can maintain better accuracy under different working conditions.