Author Question: How did serpentine heat exchangers compare to older heat exchangers? A) The serpentine heat ... (Read 35 times)

penguins · **on:** Jul 24, 2018

How did serpentine heat exchangers compare to older heat exchangers?

A) The serpentine heat exchangers required a heat-induced fan, causing negative pressure.
B) The serpentine heat exchangers became straighter and longer.
C) The serpentine heat exchangers were made from plastic.
D) The serpentine heat exchangers utilized a pressure switch.

Question 2

The temperature rise of a furnace is:

A) The BTU rating of the furnace.
B) The amount of temperature a furnace can add to a house.
C) The temperature difference between the air entering the furnace and leaving the furnace.
D) The difference between the flue gas temperature and the combustion air temperature.