Heating & Air Conditioning
Work Example 2

WorkKey Level: 3
NATEF Automotive Tasks: VII.C.2

For every pound per square inch of pressure (psi), the boiling point rises three-Fahrenheit degrees.  What is the boiling point of a system with a 16-pound cap assuming the boiling point of the coolant is 228 degrees.

Solution:

Since 1 psi = 3-Fahrenheit degrees,
(16 lb)(3 degrees) = 48°

Boiling point:
228° + 48° = 276 degrees Fahrenheit