Chapter 9

Question 1

Infrared heaters heat the air as the waves pass through it.

True or false?

Answer 1

False

Question 2

What is the emission temperature of a directly fired refractory heater?
A. 400°C, [750°F]
B. 315°C to 455°C, [600°F to 850°F]
C. 760°C to 900°C, [1400°F to 1650°F]
D. 980°C to 1260°C, [1800°F to 2300°F]

Answer 2

D

Question 3

What is the emission temperature of a low-temperature catalytic heater?
A. 400°C to 750°F
B. 315°C to 450°C, 600°F to 850°F
C. 760°C to 900°C, 1400°F to 1650°F
D. 980°C to 1260°C, 1800°F to 2300°F

Answer 3

B

Question 4

What is one disadvantage of electric heating systems?

Answer 4

Cost of operation

Question 5

Heating elements are made of metals that offer ____ to the flow of an electric current. The most common material used is ____.

Answer 5

High resistance, nickel-chromium

Question 6

What are three advantages to installing a baseboard electric heater?

Answer 6

Easy to install
Takes up minimum space
Quiet operation, no moving parts