Residential Energy Audit - Chapter 8
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
- 1.The most cost effective strategies for improving cooling efficiency are different from the strategies to improve heating efficiency. For example Shade trees will reduce the need for air conditioning but will not reduce the need for heating consumption.
- A.
True
- B.
False
- 2.Window glass with low solar heat gain coefficient (SHGC) will reduce cooling load, but heating efficient is improved by windows with a low U-factor.
- A.
True
- B.
False
- 3.Window glass with low solar heat gain coefficient (SHGC) will reduce heating load.
- A.
True
- B.
False
- 4.Low humidity helps reduce cooling energy consumption, but not heating consumption.
- A.
True
- B.
False
- 5.A home's cooling energy consumption depends on:
- A.
Shading
- B.
Window-U factors.
- C.
Making it as reflective as possible.
- D.
The use of night time ventilation.
- E.
Heat tolerance of the it's residents.
- 6.The combination of - radiant temperature - humidity - air movementdetermine comfort level .
- A.
True
- B.
Flase
- 7.___________ & ____________ determine the rate that a human body can loose heat.
- A.
Shading & windows
- B.
Air temperature & radiant temperature
- C.
Air conditioning systems and window size
- 8.The _____________ determines the rate that a human body can reject heat by evaporation of sweat.
- A.
Air flow
- B.
Relative convection
- C.
Relative humidity
- D.
Dew point
- 9.Absorbed summer sunlight raises wall & ceiling temperatures, making these surfaces radiant heaters.
- A.
True
- B.
False
- 10.Relative humidity is the percent at which air at any temperature is ___________ with water vapor.
- 11.____________ is the temperature at which condensation begins.
- A.
Relative humidity
- B.
Minimum temperature
- C.
Dew point
- 12.Evaporative coolers are a excellent energy saving option for locations with high humidity & high dew point.
- A.
True
- B.
False
- 13.Ventilation works well when the relative humidity is up to _____%.
- A.
100%
- B.
90%
- C.
80%
- D.
70%
- E.
10%
- 14.Air conditioners must remove moisture from the air to improve indoor comfort.
- A.
True
- B.
False
- 15.Circulating air inside your home will:
- A.
Make you feel cooler
- B.
Increases evaporation of sweat
- C.
Carries heat away from your skin
- D.
Have no significant effect on your comfort level
- 16.There are four types of heat gain in a home: - ______________ - internal heat gain - air leakage heat gain - temperature driven heat transmission
- 17.In most climates solar heat gain contributes about ___% of the total heat accumulation indoors.
- A.
30%
- B.
50%
- C.
90%
- 18.Solar energy falling on the roof coming trough the windows account for most of a house's solar heat gain.
- A.
True
- B.
False
- 19.Internal heat gains refer to
- A.
Heat gain from the sun's rays coming through a window
- B.
Heat gain from the heated ceilings and walls
- C.
Heat gains from lightning, refrigeration, water heating, other appliances and the body of heat from the people inside the house.
- 20.Efficient appliances produce less waste heat.
- A.
True
- B.
False
- 21.Air leakage contribute to about 20% of summer heat gain.
- A.
True
- B.
False
- 22.Of the four heat gain factors (solar gains, internal gains, air leakage, heat transmission), heat transmission trough the shell of the house is the most important.
- A.
True
- B.
False
- 23.Heat transmission typically represents around ____% of the total load.
- A.
10
- B.
20
- C.
50
- 24.Energy conservation measures that block the sun before it strikes the roof or windows are the most effective.
- A.
True
- B.
False
- 25.Trees and plants that provide shade is the best long term investment for reducing cooling costs
- A.
True
- B.
False
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