Technician A says there is a direct relationship between the pressure and temperature of a refrigerant.Technician B says any apparent temperature-pressure relationships in a contaminated system are not valid.Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because according to the basic principles of thermodynamics, specifically the ideal gas law, there is a direct relationship between the pressure and temperature of a gas, which applies to refrigerants in HVAC systems. Technician B is also correct because if a refrigeration system is contaminated, for example with moisture or another gas, the temperature-pressure relationship can be altered, making standard pressure-temperature charts inaccurate for diagnosing or charging the system.

Technician A Says There Is a Direct Relationship Between the Pressure