Answer: 143 psig
Step-by-step explanation:
Given data:
System heat = 50f
Evaporator superheat = 10f
System = r410a.
Solution:
Evaporating pressure of the refrigerant in the system
= system heat - evaporator superheat.
= 50f - 10f
= 40f.
Using the r-410a temperature chart
40f = 143 psig.