What is the primary difference between air-cooled condensers on ...

[tatyanajohnson]

What is the primary difference between air-cooled condensers on lower-efficiency systems and those on high-efficiency systems?
 
  A) The coil size is decreased to raise the head pressure and increase the temperature difference.
  B) The condenser coils are made from steel instead of copper or aluminum.
  C) The number of fins per inch is reduced to reduce the restriction to airflow.
  D) The coil size is increased to increase the heat-transfer area.

Question 2

The chemical in CFCs that contributes to ozone depletion is:
 
  A) Carbon. B) Chlorine. C) Fluorine. D) Hydrogen.

[Dinolord]

Answer to Question 1

D

Answer to Question 2

B

[tatyanajohnson]

TYSM

[bulacsom]

Excellent