What is the Second Law of Thermodynamics? - energy flows from high concentrations
to low concentrations.
What is the mode of transport of most humidity in a home? - air
If a window has a U value of 0.42 and a SHGC of 0.32, what is the window's R-value? -
2.4
What factors contribute to the stack effect in a building? - height of the building, the
difference in outside and inside temperatures
What is dew point? - the temperature at which air reaches 100% relative humidity, water
droplets may form and fall as dew
What should be used to seal air ducts? - water-based mastic
What is the Hippocratic oath? - to first do no harm
What does "do no harm" refer to in home performance? - safe guarding the well-being
of occupants, workers, and building
Considering health and safety, where might you air seal first? - the shared wall between
the home and attached garage
What is infiltration? - outdoor air entering home
What is exfiltration? - indoor air escaping from the home
What are the 3 forces with the most effect on a building? - heat, air, moisture
What does the term "house as a system" refer to? - the interaction of all components of
the complete system
What phrase is commonly used to describe a building material or part of an assembly
that allows heat energy to transmit more rapidly from one side of the assembly to the
other than most of the assembly? - thermal bridging
Heat transfer measurement for heating or cooling equipment sizing purposes is
expressed in what units? - Btu/h
What is the formula to convert R-value to U-value? - U=1/R
, The sun warming and area of the floor is an example of what kind of heat transfer? -
radiant heat transfer
What does a duct pressurization leakage test allow a technician to learn? - estimates
the duct leakage while the system is operating
When doing a duct pressure test, the duct system is typically pressurized to what level?
- 25 Pascals
In what location within a duct system would a hole of a given size leak the most, during
system operation? - closest to the air handler
When concentrating air sealing in a heating-dominated climate where is the most cost-
effective area to seal? - attic plane
The blower door depressurization test is a diagnostic tool that measures what? - the
amount of air infiltration through a building pressure boundry
Pascals and "inches of water column" are units of measure of what? - air pressure
What happens to the draft in a natural draft combustion venting system as the outdoor
temperature varies? - draft decreases as the exterior temperature rises
Relevant data for looking up heating furnace information is located where? - on the data
plate located inside the furnace cabinet
Which of the following designations is used to rate the efficiency of a furnace? - AFUE
For a heating system with a sealed combustion venting system, where does the
combustion air come from? - it uses outdoor air brought in through an intake pipe or
duct
What is the name of a heating system that extracts heat from outdoor air and delivers it
to the home? - air source heat pump
What is the intended function of a "vapor barrier" in residential construction? - to keep
warm air and water vapor from reaching cold surfaces where they can condense
What is the purpose of bituminous coatings or other "dampproofing" material applied to
the exterior of residential foundation walls? - to resist the capillary transfer of moisture
into the wall
A room is 14 feet wide and 18 feet long, with 9 foot ceilings. What is its volume in cubic
feet? - 2268 cu. ft.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller VasilyKichigin. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.48. You're not tied to anything after your purchase.
