Abstract:
The main objective of this work is to establish a
detailed modelling technique to predict the refrigerant
conditions such as pressure and enthalpy of a Vapor
Compression (VC) system. The steady state modelling
techniques of VC systems suggested in many research works
are usually not easy to reproduce due to lack of detailed
methodology and to the multitude of analytical or
computational schemes that could not be assessed objectively.
This work has addressed this issue by introducing a
modelling method developed from first principles and
adaptable to different type of prediction problems. The
validation of the model results with experiments was
satisfactory. The model outputs such as the refrigerant
evaporating pressure as well as the enthalpy at each junction
are in agreement with experimental data. The proposed
modelling technique could be adopted with other existing
mathematical models of the components of a VC system. The
modelling method could help to determine the optimal
parameters of a VC system used to design and test optimal
control strategies at low cost to improve the system’s
efficiency. This work could also be used for modelling of VC
systems with complex configuration such as systems with
single condenser and multiple evaporators.
