Chapter 129

Question 0

A factor limiting the number of fins that can be used on coils is:
A) diameter of the tube
B) temperature of the fluid in the tube
C) material of which the tube is made
D) resistance to air flow
E) direction the fluid is flowing in the tube

Answer 0

D) resistance to air flow

Question 1

A counterflow coil is less efficient than a parallel flow coil.
A) true
B) false

Answer 1

B) false

Question 2

Face velocity is the:
A) velocity of the supply water to the coil
B) velocity of the air before it enters the coil
C) velocity of the air after it leaves the coil
D) average velocity of the air flowing over the face area of the fin surface
E) velocity of the return water from the coil

Answer 2

D) average velocity of the air flowing over the face area of the fin surface