Author Question: What is an oil lift? A) An oil lift helps return oil up a vertical riser using an integral ... (Read 38 times)

colton · **on:** Jul 24, 2018

What is an oil lift?

A) An oil lift helps return oil up a vertical riser using an integral orifice tube, which creates a Bernoulli effect, forcing oil up the line.
B) An oil lift is an electric oil pump that moves collected refrigerant oil up against gravity.
C) An oil lift is a trap at the bottom of a vertical suction riser.
D) An oil lift is the increase in pressure created in the suction line due to the presence of refrigerant oil.

Question 2

Refrigerant oil flow through the liquid line is not a problem because:

A) The oil and refrigerant do not mix, so the refrigerant does not interfere with oil flow.
B) The oil mixes with the liquid refrigerant.
C) The liquid line is always piped downhill.
D) There is no oil present in the liquid line.