Ch. 13

Question 1

747. Most indirect fired heaters have ______________ firing systems.

a. elaborate
b. very expansive
c. simple
d. complicated
e. manual

Answer 1

c. simple

Question 2

748. The pilot used for most of the indirect fired heaters are the ______________ type.

a. on-demand
b. ignition
c. interrupted
d. continuous
e. intermittent

Answer 2

d. continuous

Question 3

749. The main burner on the indirect fired heater is turned off and on by a thermostat which senses ___________________.

a. the heater stack temperature
b. the heater solution temperature
c. the fire tube temperature
d. the coil bundle temperature
e. the flue gas temperature

Answer 3

b. the heater solution temperature

Question 4

750. Before starting an indirect fired heater, ensure the proper operating level of the heat transfer fluid has been established in the heater shell and __________________.

a. the level is always above the process heating coil
b. the level is always just below the process heating coil
c. the level is always between the fire tube and the process tube
d. the level is always at the mid point of the heater
e. the level is always above the expansion tank

Answer 4

a. the level is always above the process heating coil

Question 5

751. The burner of an indirect heater will burn at ____________ rate until the desired heat transfer fluid temperature is reached.

a. ¼
b. ½
c. ¾
d. full
e. modulating

Answer 5

d. full