Quiz on Heat Transfer Fluids and Combustion

What is the primary purpose of a boiler?

• To heat a fluid by combustion

• To cool a fluid

• To store fuel

• To filter air

What is the maximum pressure a boiler is designed for called?

• Design pressure

• Operating pressure

• Safety pressure

• Set pressure

What is the maximum temperature a boiler is designed for called?

• Working temperature

• Design temperature

• Safety temperature

• Operating temperature

Which type of heat transfer fluid is chemically inert and inexpensive?

• Water vapor

• Thermal fluid

• Liquid water

• Oil

What is the term for combustion carried out with an excess of air?

• Stechiometric combustion

• Real combustion

• Incomplete combustion

• Optimal combustion

What is the main component oxidized during the combustion of hydrocarbons?

• Hydrogen

• Oxygen

• Carbon

• Nitrogen

Which type of burner uses a fan to push air into the burner head?

• Induced draft burner

• Forced draft burner

• Natural draft burner

• Sealed type burner

What is the main consequence of carbon monoxide (CO) formation during combustion?

• Higher heat output

• Pollution and blood poisoning

• Increased efficiency

• Reduced fuel consumption

What is the effect of high air excess in combustion?

• Higher efficiency

• Reduced emissions

• Increased flame temperature

• Cooling of the furnace

Which directive regulates fuel combustion emissions in plants with a rated thermal input of 1-50 megawatts?

• Medium Combustion Plant Directive

• Air Quality Directive

• Waste Incineration Directive

• Energy Efficiency Directive