Question 246Steam Plants - Assistant Engineer
70% to passAccording to the data given in illustration, which of the following would be the physical state of the fluid at a gage vacuum of 28.09 inches Hg, and 117.99 degrees Fahrenheit? Illustration SG-0026
ASub cooled liquid.
BSaturated liquid.
CSuperheated vapor.
DMixture of saturated liquid and vapor.
AI Explanation
The correct answer is C) Superheated vapor. At a gage vacuum of 28.09 inches Hg and a temperature of 117.99 degrees Fahrenheit, the fluid would be in a superheated vapor state. This is because the given conditions place the fluid above the saturation line on a pressure-temperature diagram, indicating that the fluid is in a superheated state. The other options are incorrect because a gage vacuum of 28.09 inches Hg corresponds to a low pressure, which would not support a sub-cooled liquid (A) or a saturated liquid (B) state. Additionally, a temperature of 117.99 degrees Fahrenheit is too high for a mixture of saturated liquid and vapor (D) to exist at the given pressure.
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