RefrigerationQuestion 71 of 110
When comparing the two sides of an operating system, the discharge line is normally which relative to the suction line?
a.Colder and lower pressure
b.Hotter and higher pressure
c.The same temperature and pressure
d.Filled only with liquid
Explanation
The discharge line leaving the compressor carries high-pressure, high-temperature vapor, while the suction line carries low-pressure, cooler vapor returning to the compressor. Recognizing these normal conditions helps a technician diagnose faults. Abnormal readings point to charge or airflow problems.
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