Residential Energy Audit - Chapter 6

98 Questions | Total Attempts: 39

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Audit Quizzes & Trivia

These questions are based on the following book: Residential Energy: Cost savings and comfort for existing buildings: Chapter 6 - Heating


Questions and Answers
  • 1. 
    A correctly sized heating system should:
    • A. 

      Heat your home to your desired temperature within an hour.

    • B. 

      Heat your home to your desired temperature within half an hour.

    • C. 

      Heat your home at roughly the same rate it is being lost.

  • 2. 
    Room heaters deliver all their heat  into ______ area. Central heaters convert fossil fuel or electricity to heat in a central location and use ducts or pipes to distribute the heat.
  • 3. 
    Efficiency =
    • A. 

      Input/output

    • B. 

      Output/input

    • C. 

      Input*output

  • 4. 
    Generating electricity from coal or oil wastes about ___% of the fuel's potential energy.
    • A. 

      12

    • B. 

      25

    • C. 

      50

    • D. 

      70

  • 5. 
    Which of the quantities most accurately represent North America heating fuel usage the best?
    • A. 

      Oil 50%, other 5% electricity 15%, Natural gas 30%

    • B. 

      Oil 5%, other 50% electricity 15%, Natural gas 30%

    • C. 

      Oil 9%, other 9% electricity 29%, Natural gas 53%

    • D. 

      Oil 9%, other 9% electricity 53%, Natural gas 29%

  • 6. 
    In oil & gas heaters burners mix and burn feul in combustion chambers.
    • A. 

      True

    • B. 

      False

  • 7. 
    The ____________ surrounding the the combustion chamber, transfers heat from the flames and combustion gases to the heating fluid - air, water or steam.
    • A. 

      Air

    • B. 

      Heat exchanger

    • C. 

      Insulation

  • 8. 
    The efficiency of a combustion heater depends on losses to:
    • A. 

      Incomplete combustion, chimney losses

    • B. 

      Losses at the beginning and end of the burner cycle

    • C. 

      Distribution

  • 9. 
    Room heaters have no distribution losses.
    • A. 

      True

    • B. 

      False

  • 10. 
    Combustion is slow oxidation; oxygen combines with the carbon  and hydrogen , splitting the hydrocarbon molecules
    • A. 

      True

    • B. 

      False

  • 11. 
    What are the main products  of combustion?
    • A. 

      Water vapor

    • B. 

      Smoke

    • C. 

      Hydrogen

    • D. 

      Carbon dioxide

  • 12. 
    Some oxygen goes through combustion without reacting. The percentage of oxygen in _______ gases informs us about the fuel- air mixture.
  • 13. 
    Unreacted oxygen and unreacted nitrogen absorb heat from the combustion and carry it up the chimney.
    • A. 

      True

    • B. 

      False

  • 14. 
    6Open-combustion & closed-combustion describe whether the  or not the combustion chamber, heat exchanger, flues and chimney are open to the ______________ air.
  • 15. 
    Older open combustion  heaters also draw indoor air into their chimneys though dilution devices such as
    • A. 

      Valves (oil & gas)

    • B. 

      Draft diverter (gas)

    • C. 

      Barometric draft control (oil)

  • 16. 
    Draft diverters are designed to prevent excessive updrafts and increase downdrafts.
    • A. 

      True

    • B. 

      False

  • 17. 
    In a open combustion heater, strong downdrafts may interfere with the burner or extinguish the pilot
    • A. 

      True

    • B. 

      False

  • 18. 
    Name the mechanism in open combustion oil heaters that adjust dilution air to maintain a consistent chimney draft.
    • A. 

      Barometric draft control

    • B. 

      Temperature draft control

    • C. 

      Infrared draft control

  • 19. 
    Select the three common burner types:
    • A. 

      Atmospheric

    • B. 

      Radiant draft burners

    • C. 

      Induced-draft burners

    • D. 

      Power burners

  • 20. 
    Power burners use a blower to  to move combustion gases through the combustion chamber,
    • A. 

      True

    • B. 

      False

  • 21. 
    Name the burner described by the following: An electric motor on the gun burner runs the blower and an oil pump, delivering the oil at a high pressure. The burner's nozzle spays the high-pressure oil into the combustion chamber where it is ignited by sparking electrodes.
  • 22. 
    What factors may influence the intensity of chimney draft?
    • A. 

      Taller chimney

    • B. 

      Hotter contents of the chimney

    • C. 

      Lighter contents of the chimney

  • 23. 
    Factory build chimneys have multiple wall to
    • A. 

      Allow for a rigid and durable construction.

    • B. 

      Allow for better support

    • C. 

      Allow for closer tolerance

    • D. 

      Keep combustion gases warmer and avoid condensation in the chimney.

  • 24. 
    Type-B vent is widely used as gas =appliance chimney.
    • A. 

      True

    • B. 

      False

  • 25. 
    __ ______ is preferred for gas appliance chimney, vent connector for 80+ gas furnaces as well as the chimney liner whenever there is space inside a masonry chimney.
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