Admitadley I don't have experience in designing refrigerators. I'm a student at university and as part of a group project we have decided that the best option to cool a gas below its dew point is to use the vapour compression cycle. I'm not looking for you to design anything, do homework, or tell me an answer. Mearly offer some advice.

I have done some research. Mainly through reading a textbook by Chengal and Boles and that is where I had come across R22 and 134a.

Any advice on how to go about choosing a refrigerant or links to articles which could be of help are still much appreciated