Hi,

AMAZING FORUM!
I'm new to this forum and actually new to this industry. I just graduated from college, and started a new job and being in expert in Refrigerants is my first task. I am interested in refrigerants for A/C systems in rail cars.

I have some questions with respect to R407C that I hope you can help me with:

1- Assuming the unit (Condenser) is designed for R-22, how big a problem is the glide of the blend? I understand efficiency and performance lower down. by how much? any other differences?

2- Since leakage can be a problem in the mobile environment, fractionation of this blend could be a concern. How would the maintenance department know that fractionation has occurred and when to replace the charge

3- If a fractionated R407C charge is recovered and not severely contaminated, can the refrigerant manufacturer reclaim it, restoring its original composition?

Also, are there any new R22 replacement refrigerants on the horizon that are either near-azeotropes or azeotropes?

Any help is GREATLY appreciated!

Thanks a lot guys! and keep up the good work!

Marwan