Book 1: 6-19 - Introduction to Thermoil Heaters & Systems Flashcards
Clean steam may be used in:
Select one:
A. Oil refineries
B. Steam cleaning
C. Humidification systems
D. Gas plants
E. Chemical processes
C. Humidification systems
HRSG is the acronym for:
Select one:
A. High recovery system grader
B. Hot recovery system generator
C. Heat recovery steam generator
D. Hot radiation steam generator
E. Heavy radiation steam grader
C. Heat recovery steam generator
Clean steam may be used in:
Select one:
A. Oil refineries
B. Chemical processes
C. Gas plants
D. Steam cleaning
E. Sterilization systems
E. Sterilization systems
Hot oil circulating pumps:
Select one:
A. Love type pumps
B. Must be capable of temperatures above 500°C (932°F)
C. Need not be kept hot if on standby
D. Are positive displacement units
E. Are usually single stage centrifugal units
E. Are usually single stage centrifugal units
A hot oil heating system is similar in principle to:
Select one:
A: A fire tube boiler burner
B. An oil refinery
C. A condensate return system
D. A steam heating system
E. A hot water heating system
E. A hot water heating system
On the fuel gas system to a hot oil heater, the acronym, PRV, stands for:
Select one:
A. Primary regulating valve
B. Primary relief valve
C. Pressure restricting valve
D. Pressure regulating valve
E. Pressure relief valve
D. Pressure regulating valve
Oils intended for use as heat transfer fluid in a hot oil system should:
Select one:
A. Resist thermal breakdown at low operating temperatures
B. Have a high viscosity
C. Posses low heat transfer characteristics
D. Be non-corrosive to metals used in the system
E. Have a high vapour pressure at operating temperature
D. Be non-corrosive to metals used in the system
Oils intended for use as heat transfer fluid in a hot oil system should:
Select one:
A. Have a high vapour pressure at operating temperature
B. Be corrosive to metals used in the system
C. Have a low viscosity
D. Possess low heat transfer characteristics
E. Resist thermal breakdown at low operating temperatures
C. Have a low viscosity
Flanges used in hot oil systems should be raised face and suitable _____ gaskets should be used.
Select one:
A. Metallic
B. Cork
C. Garlock
D. Graphite/asbestos
E. Rubber
A. Metallic
While the hot oil heater refractory is being dried out the oil circulating in the tubes should be limited to a temperature of not more than ______ per hour.
Select one:
A. 35°C
B. 30°C
C. 55°C
D. 25°C
E. 60°C
C. 55°C
Radiant type oil heaters for a hot oil system have:
Select one:
A. Combustion gases flowing insides tubes
B. Tubes containing fins on their inner surfaces
C. Mechanical draft combustion systems
D. Efficiencies of about 40 to 50%
E. An efficiency of about 75 to 85%
D. Efficiencies of about 40 to 50%
A _______ surrounds the foundation to prevent hot oil from spreading beyond the immediate confines of the heater in the event of a tube rupture.
Select one:
A. Wooden dyke
B. Moat
C. Earthen wall
D. Steel wall
E. Concrete dike
E. Concrete dike
Piping for hot oil systems 25.4 mm (1 in) in diameter, or smaller, should be_____ with screwed connections.
Select one:
A. Double extra strong
B. Schedule 80
C. Schedule 160
D. Schedule 40
E. Strong
B. Schedule 80
The major components of a typical hot oil system include the furnace, pump, control devices and the:
Select one:
A. Surge tank
B. Stack damper
C. Containment dyke
D. Relief valve
E. Gas blanket
A. Surge tank
With reference to hot oil systems the acronym FCV stands for:
Select one:
A. Fuel cutoff valve
B. Fuel control valve
C. Full cascade valve
D. Flow control valve
E. Flow control valve
D. Flow control valve