Energy Modeling & Analysis Flashcards
6 cards from real HERS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Energy Modeling & Analysis flashcards as text
What is the purpose of energy modeling in home performance analysis?
Answer: Optimize design for energy efficiency
Energy modeling simulates a building's energy use to identify efficiency improvements and predict performance.
Which software tool is commonly used for HERS energy modeling?
Answer: REM/Rate
REM/Rate is a widely accepted tool for HERS raters to model energy usage and generate compliance reports.
What factor most affects heating and cooling load in a home?
Answer: Insulation and orientation
Building orientation and insulation values greatly affect heating and cooling demands.
What is the HERS Index Score?
Answer: A numerical energy performance rating
The HERS Index Score measures a home's energy efficiency; lower scores indicate better performance.
How does shading impact energy modeling?
Answer: Reduces cooling demand
Shading reduces solar heat gain, which can lower cooling loads in summer months.
Why are air changes per hour (ACH) important in energy analysis?
Answer: Reflects how often air is exchanged
ACH measures how often indoor air is replaced; lower ACH rates can improve efficiency when controlled ventilation is present.