Question

To increase the evaporator pressure, the adjustment on top of an automatic expansion valve should be:

1) Decreased
2) Increased
3) Left unchanged
4) Cannot be determined

Answer 1

To increase the evaporator pressure, the adjustment on top of an automatic expansion valve should be decreased.

Step-by-step explanation:

To increase the evaporator pressure, the adjustment on top of an automatic expansion valve should be decreased. When the adjustment on top of the expansion valve is decreased, it restricts the flow of refrigerant, causing the pressure in the evaporator to increase. This results in a higher pressure difference between the evaporator and condenser, allowing for more efficient heat transfer.