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NEHERS Rater Training - Study Quiz 4

Terms in this set (25)

If you're using a digital gauge for the blower door test and the baseline pressure is +3 Pa, what pressure should you depressurize the house to for infiltration testing?
-47 Pa
What is the term for efficiency of an air source heat pump in heating mode?
HSPF
What direction does air vapor move?
High pressure to low pressure
Without changing the moisture content, heating the air will cause the relative humidity to
Decrease
In general, insulation materials have high conductive properties
False
Adding insulation to the attic will increase the U-factor of the ceiling (T/F)
False
Plans drawn ¼ inch to 1 foot will be ________ times smaller than the actual structure.
48
Which of the following occurs only in solid materials?
Conduction
What directory would you find energy use for a new model refrigerator?
ENERGY STAR
The term "thermal envelope", relative to a house, means ___________________.
The thermal materials surrounding the conditioned areas of the home
Approximately how much energy is contained in one kWh of electricity?
3413 Btus
A rater may not have any financial interests in a rated home (T/F)
False - They must only disclose any financial interests in a home
A 60-watt light bulb, in use for 4 hours a day, will consume how many kilowatt-hours of electricity in a year?
INCORRECT
When measuring duct leakage to outside, how should you configure an unconditioned basement with ducts running through it?
Open the door between the conditioned space and the basement, and open a door or window between the basement and outside
What are four factors that affect human comfort in a house. (choose 4)
Air temperature (dry bulb temperature)
AND
Air movement
AND
Relative humidity
AND
Mean radiant temperature
What is the term used to describe the amount of heat that must be added to a building to maintain comfort during outdoor design conditions?
(Design) Heating Load
What does the acronym CRF stand for?
Can't Reach Fifty
Under what condition is the Can't Reach Fifty factor used during blower door testing?
When the building is too leaky to get the house-to-outside pressure up to (or down to) 50 Pascals
What is the greatest indoor pollutant threat from a combustion appliance?
Carbon Monoxide (CO)
What are some of the effects the pollutant, from Question 20, has on people?
Flue-like Symptoms
AND
Death
AND
Headache
What are the two most common types of geothermal heat pumps?
Closed Loop & Open Loop
What is the term used to describe the energy efficiency of a water heater?
Energy Factor (EF)
What is the "double penalty" of internal heat gain?
Pay to heat the home (inefficient lights and appliances) and then pay to cool it off
What does sensible heat factor mean as it relates to air conditioner performance?
What percentage of the cooling capacity of the air conditioner handles sensible heat (dry bulb temperature) versus latent heat (humidity)
How many BTUs in one kWh?
3413
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