At what saturation temperature in degrees F does refrigerant R-11 at a pressure of 18.1 "Hg vacuum stabilize?

Prepare for the Type III Low Pressure Equipment Certification. Master essential concepts with practice questions and detailed explanations. Ensure success on your exam day!

To determine the saturation temperature of refrigerant R-11 at a pressure of 18.1 inches of mercury vacuum, it's important to understand the relationship between pressure and temperature in refrigeration cycles. In a vacuum, the pressure is lower than atmospheric pressure, and as pressure decreases, the saturation temperature also decreases.

For refrigerant R-11, at a pressure of 18.1 inches Hg vacuum, the corresponding saturation temperature stabilizes around 32 degrees Fahrenheit. This specific temperature represents the point at which R-11 transitions between the vapor and liquid phases at that particular vacuum pressure, effectively making it the correct answer.

This understanding of vacuum pressure and saturation temperature is crucial in refrigeration applications, as it affects the performance and efficiency of refrigeration systems. Knowledge of these principles helps technicians select the right refrigerants and operate systems correctly under varying pressure conditions.

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