Line D Gas Fired Appliances and Boilers ICI Burners

Question 1

What is the purpose of tertiary air in the combustion process?

Answer 1

To add air to control emissions and flame shape

Question 2

What type of heat transfer does an infrared burner utilize?

Answer 2

Direct radiation

Question 3

What type of heat transfer does a low temperature indirect heating burner use?

Answer 3

It uses a fan to transport the heated air to the work

Question 4

What type of heat transfer does a direct-fired burner use?

Answer 4

It uses a mix of radiation and hot gas convection

Question 5

What type of heat transfer does a high temperature indirect-heated burner utilize?

Answer 5

Tubes or enclosed walls are heated and radiate heat to the work

Question 6

Identify the type of flame represented in the following image:

Answer 6

Figure 1 type A

Question 7

Identify the type of flame represented in the following image:

Answer 7

Figure 2 type C

Question 8

Identify the type of flame represented in the following image:

Answer 8

Figure 3 type E

Question 9

Identify the type of flame represented in the following image:

Answer 9

Figure 4 type F

Question 10

Identify the type of flame represented in the following image:

Answer 10

Figure 5 type H

Question 11

A propane fired boiler has a low-fire input of 1,700,000 BTUH and a high-fire input of 22,100,000 BTUH. What is its turndown ratio?

Answer 11

13:1

Question 12

What ratio of air/natural gas are most premix burners limited to for acceptable, normal operation?

Answer 12

10:1

Question 13

What are three characteristics of a nozzle mix burner?

Answer 13

• Its ability to operate over a wide range of air/gas ratios
• To control the mixing of the gas and air without sacrificing clean combustion or flame stability
• To allow the ability to vary the flame shape

Question 14

What methods can be used to atomize oil in an oil fired burner?

Answer 14

• Air atomizing
• Pressure atomizing
• Steam atomizing

Question 15

How can the flame length of an oil-fired burner be modified?

Answer 15

Changing the oil nozzle spray angle

Question 16

The main burner flame shall be proven at the furthest point(s) along its base from the source of ignition when the burner flame width is in excess of how many feet?

Answer 16

3 feet

Question 17

What style of burner is represented by the following image:

Answer 17

a. Gun burner

Question 18

What style of burner is represented by the following image:

Answer 18

Lance burner

Question 19

What style of burner is represented by the following image:

Answer 19

Cane burner

Question 20

What style of burner is represented by the following image:

Answer 20

Immersion burner