Residential Energy Audit - Chapter 3

30 Questions | Total Attempts: 167

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Audit Quizzes & Trivia

Residential Energy: Cost Savings and Comfort for Existing Buildings [Book] by John Krigger, John Krigger & Chris Dorsi - House & Home - Saturn Resource Management, Inc. (2004) - Paperback - 318 pages


Questions and Answers
  • 1. 
    The _________ combined with the ___________ defines the thermal boundary.
    • A. 

      Air barrier

    • B. 

      Insulation

    • C. 

      Walls

    • D. 

      Attic

    • E. 

      Crawl space

  • 2. 
    The main goals of air leakage control are to:
    • A. 

      Save energy

    • B. 

      Increase comfort

    • C. 

      Reduce vermin in the house

    • D. 

      Enhance fire safety

    • E. 

      Avoid moisture migration into building cavities.

  • 3. 
    Indicate the correct measurement for air leakage through construction materials.
    • A. 

      CFM

    • B. 

      CFM25 per 100 square ft

    • C. 

      CFM50 per100 square ft

  • 4. 
    Which of the following materials are not considered to be air barriers?
    • A. 

      Standard concrete block

    • B. 

      Spray on cellulose

  • 5. 
    Direct air leakage occurs at:
    • A. 

      Windows

    • B. 

      Doors

    • C. 

      The building shell

  • 6. 
    Indirect air leakage occurs at:
    • A. 

      Windows

    • B. 

      Doors

    • C. 

      The building shell

  • 7. 
    The wind, furnace blower and stack effect tend to pressurize some areas of the home and depressurize others.
    • A. 

      True

    • B. 

      False

  • 8. 
    The pressures created by stack effect is greatest at the ____________ points.
    • A. 

      Highest and lowest

    • B. 

      Mid

  • 9. 
    The wind is blowing at 40mph. The leeward side, facing away from the wind, is usually either ______________ or ______________.
    • A. 

      Pressurized, neutral

    • B. 

      Depressurized, neutral

  • 10. 
    What is the area between positive and negative pressure in a home called?
    • A. 

      Neutral zone

    • B. 

      Neutral pressure zone

    • C. 

      Neutral pressure plane

    • D. 

      Zero pressure zone

  • 11. 
    Exhaust fans and cloths dryers create a slight vacuum and therefor also move the neutral pressure plane _____.
    • A. 

      Up

    • B. 

      Down

  • 12. 
    Why does the neutral pressure plane move up when a cloth dryer is turned on?
    • A. 

      The buildings interior space is under more negative pressure.

    • B. 

      The buildings interior space is under more positive pressure.

    • C. 

      The neutral pressure plane is always in the middle and never moves up or down.

  • 13. 
    A fan that forces air into the home moves the neutral pressure plane ____.
    • A. 

      Up

    • B. 

      Down

  • 14. 
    A hole near the neutral pressure plane of the home allows an ______________air leakage.
    • A. 

      Minimal

    • B. 

      Average

    • C. 

      Excessive

  • 15. 
    The wind speed ____________ the higher from the ground you measure.
    • A. 

      Decreases

    • B. 

      Increases

  • 16. 
    Exhausts fans and cloth dryers move the neutral pressure plane up because more of the interior space is under negative pressure.
    • A. 

      True

    • B. 

      False

  • 17. 
    A fan that blows air into the home moves the neutral pressure plane up because more of the interior space is under positive pressure.
    • A. 

      True

    • B. 

      False

  • 18. 
    What does the acronym  "MVG" stand for?
    • A. 

      Maximum Ventilation Guideline

    • B. 

      Minimum Ventilation Guideline

  • 19. 
    Indicate which of the following is NOT part of preparations and setup of a blower door test?
    • A. 

      Closing primary windows and storm windows

    • B. 

      Closing all interior doors

    • C. 

      Disabling heaters and water heaters by turning down their thermostats.

    • D. 

      Covering ashes in wood stoves and fireplaces with damp newspaper to prevent the ashes from being sucked into the home.

    • E. 

      Shutting fireplace dampers, fireplace glass doors, wood stove dampers, wood stove air intakes.

  • 20. 
    CFM is the unit of measurement for cubic feet per minute. What does CFM50 refer as a read out from a blower door test.?
    • A. 

      Cubic feet per minute divided by half of the air pressure in the home

    • B. 

      Cubic feet per minute at 50 pascals of house pressure

  • 21. 
    A home must have sufficient air leakage or whole house ventilation.
    • A. 

      True. Either one is very effective in providing the home with fresh air.

    • B. 

      True. However air leakage is not desirable because it tends to over-ventilate the building in leaky zones and under ventilate in tighter zones.

    • C. 

      False. Only whole house ventilation can provide adequate fresh air inside the home.

  • 22. 
    ASHRAE suggests a minimum ventilation rate of _____ CFM per person or 0.35 ACHn, whichever is greater.
    • A. 

      1

    • B. 

      15

    • C. 

      30

  • 23. 
    ASHRAE suggests a minimum ventilation rate of 15 CFM per person or ____ ACHn, whichever is greater under natural conditions.
    • A. 

      0.53

    • B. 

      0.45

    • C. 

      0.35

  • 24. 
    Home A has a MVG of 1000. Home B has a MVG of 3000. Indicate which of the following are factors that influence the MVGs in these single family homes.
    • A. 

      Climate

    • B. 

      Number of occupants

    • C. 

      Building height

    • D. 

      Shielding o the building from trees

  • 25. 
    You are auditing a single family home with four occupants living in it. The blower door flow reading is at 5000 CFM50. Which of the following would be a correct conclusion.
    • A. 

      This is the minimum ventilation guideline set by ASHRAE is being met.

    • B. 

      Whole house ventilation is recommended.

    • C. 

      Carefully targeted air sealing should produce some energy savings.

    • D. 

      Minimum ventilation guideline set by ASHRAE is not being met.

    • E. 

      Thorough air sealing efforts should produce impressive energy savings.

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