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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
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?
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.Quote:
Originally Posted by BESC5240
What about brines?
Water + Ethylene Glycol
Water + Proplene Glycol
Water + Calcium Chloride
Do they also fall under some category of number?
No they don't
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.