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calculating norms?

rickwalkerjr on Wed July 20, 2011 4:46 PM User is offline

Hi to all im new here and recently finished an hvac school & earned my universal cert. I know nothing about automotive ac procedures (thats why i am here) and Im wondering about you guys calculate your norms as part of your troubleshooting?

in comfort cooling we were trained to use formulas to calculate discharge pressures and even suction pressure if needed, this way you have an idea what would be "normal" for a particular refrigerant at a given temp. once your gages were connected you knew if the pressures looked good or bad, how can say if something looks good if you dont know what is normal?

and Im also wondering if superheat or subcooling plays any role in the automotive repair world. maybe Im just making things to technical but to me, not only is refrigeration science...its interesting!

looking forward to some good answers and most of all looking forward to learning to fix auto ac properly.

rick :]

TRB on Wed July 20, 2011 9:37 PM User is offlineView users profile

It matters to a degree. But you have more variables with auto a/c. Like increased RPM and air flow. So standard calculations are not as easy to apply.


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