Exam (elaborations)
HERS Rater Exam for 2023/2024 COMPLETE SOLUTION 100% VERIFIED ANSWERS A+ GRADED Free
- Course
- Institution
HERS Rater Exam for 2023/2024 COMPLETE SOLUTION 100% VERIFIED ANSWERS A+ GRADED Free
[Show more]
Content preview
HERS Rater Exam for 2023/2024 COMPLETE SOLUTION 100% VERIFIED ANSWERS A+GRADED Free
250 Pascals is how many inches of water gauge? - ✔✔ANSW✔✔..1 Pascal = 0.004
inches at sea level
250 Pascals = 0.004*250 inches at sea level
= 1 inch at sea level
A homeowner has paid for 17 CCF of natural gas on their monthly bill. How many Btu's
did they use? - ✔✔ANSW✔✔..1 CCF = 102,000 Btu's
17 CCF = 17 x 102,000 = 1,734,000
Adiabatic walls are found in what type of construction? - ✔✔ANSW✔✔..Multifamily
An air source heat pump? - ✔✔ANSW✔✔..7.8 HSPF heating mode, 13 SEER cooling
mode
Can any energy analysis software be used to produce a HERS rating? -
✔✔ANSW✔✔..No -- The software must be a RESNET accredited software tool.
Describe a "Section View" - ✔✔ANSW✔✔..A sectional view is like looking at a slice of
the house. It shows the details of the construction as well as the relationships between
floors/ceilings and header heights
Do thermal breaks in metal framed windows raise or lower the U-factor? -
✔✔ANSW✔✔..Lowers the U-factor.
Homes are heated or cooled by what types of heat transfer? Give examples. -
✔✔ANSW✔✔..Convection (forced air systems), Radiation (radiant floors)
How are window dimensions determined? - ✔✔ANSW✔✔..By measuring the rough
opening (frame + glass).
How can you tell if a coating is installed on a window? - ✔✔ANSW✔✔..Use a lighter or
match and count the reflections (1 reflection per pane or coating)
How do you correct for magnetic deviation? - ✔✔ANSW✔✔..Magnetic North must be
determined with a compass that hasn't been affected, and then the affected compass is
pointed in the known direction of magnetic North. If the affected compass is off to the
West, the appropriate number of degrees is added; if the compass is off to the East, the
, appropriate number of degrees is subtracted. This information should stay with the
compass as a correction card.
How do you determine the orientation of the windows in an exterior wall? -
✔✔ANSW✔✔..Stand with your back to the outside of the wall and look at the direction
of the compass needle in reference to the direction you are facing.
How is the HSPF calculated? - ✔✔ANSW✔✔..Btu's of heating / watts of electricity to
produce the heating
How is the SEER calculated? - ✔✔ANSW✔✔..Btu's of cooling / watts of electricity to
produce the cooling
How many gallons of mid-grade gasoline equal the energy content of 1 cord of apple
wood? - ✔✔ANSW✔✔..1 MMBtu = 1,000,000 Btu
28.72 MMBtu = 28,720,000 Btu
1 gallon of mid-grade gasoline = 125,000 Btu
28,720,000 Btu / 125,000 Btu = 229.76 gallons of mid-grade gasoline
1 gallon of gasoline = 0.125 MMBtu
28..125 = 229.76 gallons of gasoline
How many kWh are in 14,000 Btu's? - ✔✔ANSW✔✔..1 kWh = 3,413 Btu's
14,000 Btu's / 3,413 Btu's = 4.1 kWh
How many therms are in 18 CCF of natural gas? - ✔✔ANSW✔✔..1 CCF of natural gas
= 1 therm
18 CCF of natural gas = 18 therms
How many therms? - ✔✔ANSW✔✔..1 CCF of natural gas = 1 therm
17 CCF of natural gas = 17 therms
How many tons of lignite coal would it take to equal the energy content of 1 cord of
Pinon Pine? - ✔✔ANSW✔✔..1 cord of Pinon Pine = 33.50 MMBtu
1 ton of lignite coal = 13.95 MMBtu
33.50 MMBtu / 13.95 MMBtu = 2.4 tons of lignite coal
How much energy consumption is typically accounted for by lights and appliances? -
✔✔ANSW✔✔..20% of the home's energy consumption.
How much heat flows through that wall if the interior temperature is 70°F and the
outside temperature is 34°F? - ✔✔ANSW✔✔..Q = U x A x ∆T
Q = 0.0578 x 105 x 36
Q = 218 Btu/hr
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 docwayne5. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77988 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now