Refrigerant numbers for Air and aqueous salt solutions

[AastroGuru]

Air
Aqueous Sodium Chloride
Aqueous Calcium Chloride

All these 3 are refrigerants I suppose!!

Do they have specific ASHRAE nomenclature?

Like R-XYZx

What exactly is a Brine Solution? What are the salts which could be dissolved to make Brine?
Do Brine Solution have R-XYZx

[AastroGuru]

Air and Brines doent undergo phase change and hence i assume they are not primary refrigerants.

I assume only primary refrigerants do have R-numbers!!!

Comments please?

[BESC5240]

Air = R729
in a mixture N2/O2/Ar 76/23/1

Air can undergo a phase change, below -140°C and at 37 bar (or below -191 at atmospheric pressure) it becomes liquid ...

[AastroGuru]

Air = R729
in a mixture N2/O2/Ar 76/23/1

Air can undergo a phase change, below -140°C and at 37 bar (or below -191 at atmospheric pressure) it becomes liquid ...

Thanks a lot.

What about brines?

Water + Ethylene Glycol
Water + Proplene Glycol
Water + Calcium Chloride

Do they also fall under some category of number?

[Peter_1]

No they don't

[oldesky]

Refrigerant numbers as I have been informed are alotted on the basis that all the constituents that make up the mixture. EG air = nitrogen oxygen etc will all undergo phase change and can be used as refrigerants in their own right. Brines do not fall into this category and therefore cannot be alotted a refrigerant number. There is an R134a based refrigerant "drop in that has been available for many years but has no number. As far as I am aware, this was due to the fact that it contains ethanol which is not classed as a refrigerant and therefore cannot receive an ashrae number.