How is placement of the evaporator line determined when drawing a PH diagram of an operating system?
A) The evaporator line can be drawn anywhere that crosses the saturation curve as long as it is a horizontal line.
B) Draw a vertical line across the saturation curve on a constant enthalpy line equal to the system low-side absolute temperature.
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.
Question 2
When installing a double riser in a commercial refrigeration system, which of the following statements is TRUE?
A) The combined areas of the risers should be equal to the area of the suction line.
B) The combined areas of the risers should be greater than the area of the suction line.
C) The combined areas of the risers should be less than the area of the suction line.
D) Both of the risers should be the same size.
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