How is placement of the evaporator line determined when drawing a PH diagram of an operating system?
A) Draw a vertical line across the saturation curve on a constant enthalpy line equal to the system low-side absolute temperature.
B) The evaporator line can be drawn anywhere that crosses the saturation curve as long as it is a horizontal line.
C) Draw a horizontal line across the saturation curve on the constant pressure line equal to the system low-side absolute pressure.
D) The evaporator line is always drawn on the horizontal line representing 50 psia absolute pressure.
C
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