Double serpentine water coil circuiting is used
a) where the water velocity in the tubes is less than 0.3 m/s
b) where the water velocity in the tubes is more than 2.4 m/s
c) for any water velocity in the tubes
d) where the water velocity in the tubes is between 0.3 and 2.4 m/s
e) in applications requiring low water velocities and low water pressure drops
Answer: B