3B2 Ch 13

Question 1

Indirect-fired heaters use different heat transfer liquids or media for different temperature applications. Which of the following are the most common types of media?
1. Water
2. Glycol
3. Oil
4. Salt solutions
Select one:

a.
1, 2, 3

b.
1, 2, 4

c.
1, 3, 4

d.
2, 3, 4

e.
1, 2, 3, 4

Answer 1

e.
1, 2, 3, 4

Question 2

On a fired heater, the main fuel and bypass fuel control valves regulate the fuel pressure to which component(s)?
Select one:

a.
Main safety shut-off valve

b.
Constant fuel pressure regulator

c.
Main atmospheric vent valve

d.
Manual shut-off valve

e.
Burners

Answer 2

e.
Burners

Question 3

Vertical cylindrical heaters are bottom fired, with a _______ radiant section and a convection section that is ________.
Select one:

a.
Vertical, horizontal

b.
Cylindrical, rectangular

c.
Circular, below the radiant section

d.
Longitudinal, circumferential

e.
Rectangular, cylindrical

Answer 3

b.
Cylindrical, rectangular

Question 4

A eutectic salt solution used as a heat transfer medium in an indirect heater is a mixture of:
Select one:

a.
Sodium nitrate and magnesium nitrate

b.
Calcium nitrate and magnesium nitrate

c.
Sodium nitrate and calcium nitrate

d.
Sodium nitrite and potassium nitrate

e.
Calcium nitrate and potassium nitrate

Answer 4

d.
Sodium nitrite and potassium nitrate

Question 5

The _______ and the ________ assembly are mounted above the convection section of vertical fired heaters.
Select one:

a.
Economizer, damper

b.
Economizer, air heater

c.
Stack, damper

d.
Reheater, reboiler

e.
Air heater, stack

Answer 5

c.
Stack, damper

Question 6

In a fired-heater burner system, the manual shut-off valves at each burner are labeled “SS”, which stands for _____________.
Select one:

a.
Safety supervisory valve

b.
Slow-blow safety valve

c.
Double shut-off valve

d.
Double block and bleed shut-off valve

e.
Supervisory shut-off valve

Answer 6

e.
Supervisory shut-off valve

Question 7

The main burner on the indirect-fired heater is turned off and on by a thermostat that senses the:
Select one:

a.
Heater stack temperature

b.
Heater solution temperature

c.
Fire tube temperature

d.
Coil bundle temperature

e.
Flue gas temperature

Answer 7

b.
Heater solution temperature

Question 8

The burner of an indirect heater will burn at _____ rate until the desired heat transfer fluid temperature is reached.
Select one:

a.
¼

b.
½

c.
¾

d.
Full

e.
Modulating

Answer 8

d.
Full