Refrigerant identify

[tomekbr82]

Hallo
I have a question how to identify what kind of refrigerant is in the bottle or device . Could you explain how to identify the refrigerant when i know the pressure in bottle/device and ambient temperature. (I will be glad if you explain that on Pressure-Enthalpy Chart ).

[sedgy]

hi tom ,
if you get the temp of the gas in a bottle< from the outside< and you use a suction gauge on the same bottle , you now have a pressure AND A TEMPRITURE, from that using a comparitor at one time all engineers carried this tool to see at what temp the system the system was running at, hope this helps = sedgy

[install monkey]

or just go off the colour of the bottles:D

[Brian_UK]

Bottle temperature and pressure may not work with modern blends, sadly.

[jdunc2301]

Pressure/Temperature would give you an idea but like Brian_UK said with modern refrigerant blends you can't be 100% certain! I think you can send samples away for analysis but thats expensive...never done it myself, im sure it would be cheaper just to ditch the "unknown" refrigerant bottle and buy a new known one...

J


Bottle temperature and pressure may not work with modern blends, sadly.

[jdunc2301]

http://www.intertek.com/hvac/refrigerants/

[Rob White]

Hallo
I have a question how to identify what kind of refrigerant is in the bottle or device . Could you explain how to identify the refrigerant when i know the pressure in bottle/device and ambient temperature. (I will be glad if you explain that on Pressure-Enthalpy Chart ).

I agree with what has been said already.

The temperature of the cylinder and the pressure of the refrigerant will
give you the type of refigerant when using a compariter or Pressure enthalpy chart.

You need to take the temperature of the cylinder and then measure the pressure
and find which refrigerant is nearest to your readings and that should be the refrigerant.

The trouble is as Brian pointed out the majority of new refrigerants are blends and blends
will (dependant on what blend it is) glide over more than one temperature.
So trying to find the type of a blended refrigerant is not as exact as it was with single pure
fluids.

If you suspect the refrigerant has leaked out of a system, then the only realy accurate way
of identifying the refrigerant is by sending it away for testing.

If the refrigerant is a 400 series refrigerant then it will be a blend and normal pressure
temp relationships are more complicated.

Rob

.

[sedgy]

sorry gents , well it seams like it was 200 years since I last worked = sedgy.

[frank14]

Good morning
My two cents worth. It also depends on whether you can trust your supplier. I'm presently working in Equatorial Guinea and recently our normal supply shipments were delayed and some R22 was sourced "locally" via Nigeria. All the right packaging, colour, sealed, but definitely not R22. Temp / Press looked close to R134A. Luckily my tech noticed on the first unit he was working on.