Superheat

[US Iceman]

To measure evaporator superheat:
1) Record the actual temperature at the TXV bulb.
2) Record the evaporating pressure at the TXV bulb.
3) Convert the evaporating pressure to temperature by using those handy pocket pressure/temperature cards. These cards/charts show the saturation pressure/temperature relationship for those refrigerants.
4) Subtract the temperature you converted on the pressure/temperature card from the actual temperature you recorded at the TXV bulb.
5) The difference is the actual evaporator superheat.


To measure subcooling:
1) Record the compressor discharge pressure at the condenser or receiver.
2) Convert the discharge pressure to temperature by using the pressure/temperature cards.
3) Record the actual temperature of the liquid leaving the condenser.
4) Subtract the liquid temperature (at the condenser) from the converted temperature (from the discharge pressure using the pressure/temperature card).
5) The difference is the amount of subcooling.

Does that help?

[marc5180]

Thanks guys

[wizzer]

Cheers US Iceman ive saved that to my laptop.

Thanks

Wizzer

[US Iceman]

Another free benefit of belonging to this forum.