Abstract:
The work we are introducing concerns the study of the performance of the
single acting compression trans-critical machine operating with𝑅744 as refrigerant.
A comparative study of the trans-critical cycle at 𝑅744 and of the classical cycle
working with 𝑅134𝑎is made.
The work is carried out with the “Cool Pack” software after a thermodynamic
analysis of the cycles concerned.
This work allowed us to determine the thermodynamic characteristics of the
trans-critical cycle, among which an essential factor is the coefficient of
performance “COP”, and to improve the trans-critical cycle by adding a heat
exchanger, in order to increase cooling efficiency.
Therefore, it is proposed to use the trans-critical machine running on 𝑅744 in the
industrial field, specifically the pharmaceutical industry because this fluid is not
harmful to the environment and economical
