Question 228Steam Plants - 1st Asst/Chief
70% to passAccording to the data given in the illustration which of the following would be the physical state of the fluid at a gage vacuum of 25.03 inches Hg, and 126.08 degrees Fahrenheit? Illustration SG-0026
ASuperheated vapor.
BSub cooled liquid.
CMixture of saturated liquid and vapor.
DSaturated liquid.
AI Explanation
The correct answer is B) Sub cooled liquid. At a gage vacuum of 25.03 inches Hg and a temperature of 126.08 degrees Fahrenheit, the fluid would be in a sub cooled liquid state. This is because the given conditions place the fluid below the saturation curve on the pressure-temperature diagram, meaning the fluid is in a liquid state at a temperature lower than the saturation temperature for that pressure. The other answer choices are incorrect because: A) Superheated vapor requires the fluid to be above the saturation curve, C) Mixture of saturated liquid and vapor occurs at the saturation curve, and D) Saturated liquid occurs precisely at the saturation curve, not below it.
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