Chapter 142

Question 0

Oil fired heater temperature controllers sense
A) oil temperature at the furnace outlet
B) combustion gases stack temperature
C) ambient air temperature
D) fuel gas temperature
E) length of the flame

Answer 0

A) oil temperature at the furnace outlet

Question 1

The temperature of the hot oil leaving the heater is usually:
A) 250 to 280*C
B) 225 to 250*C
C) 235 to 290*C
D) 280 to 325*C

Answer 1

C) 235 to 290*C

Question 2

The temperature of oil in a fired oil heater is controlled by:
A) increasing the oil flow
B) decreasing the gas flow alone
C) control of the firing rate
D) decreasing the air flow alone
E) controlling the water level in the drum

Answer 2

C) control of the firing rate

Question 3

A combination radiant and convection heater is the least efficient hot oil heater design.
A) true
B) false

Answer 3

B) false

Question 4

Hot oil must meet which of the following requirements?
A) be noncorrosive 
B) low pour point
C) high flash point
D) all of the above

Answer 4

D) all of the above

Question 5

All piping used in a hot oil system must be schedule 80.
A) true
B) false

Answer 5

B) false