Design of automotive air conditioning unit working on R744(CO2)

Abstract

In this project we will design an air conditioning unit for private car working on refrigeration R744 (CO2) , because its an environmental gas, other refrigerants used in automobile air conditioning like ( R12 , and R134a) have a dangerous pollution in the world , R12 effects on ozone layer and caused ozone depletion. R134a can be flammable, and it has high global warming potential effect, CO2 has no ozone depletion , and it has smaller effect on global warming potential than other gases. In this project we will talk about CO2 properties , and the cycle components which we need in the design of the project , and we will do the calculations required to build up the components in the future.