Building Envelope and Lighting Flashcards
7 cards from real Certified Energy Auditor Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Building Envelope and Lighting flashcards as text
According to ASHRAE 90.1, which lighting control is required in all enclosed spaces of 10,000 sq ft or less?
Answer: Occupancy sensors or vacancy sensors
ASHRAE 90.1 requires occupancy sensors or vacancy sensors in enclosed spaces of 10,000 sq ft or less to automatically reduce lighting when spaces are unoccupied.
A wall assembly has components with R-values of 1.0, 13.0, 0.5, and 0.7. What is the total assembly R-value?
Answer: 15.2
Total R-value for series assemblies is the sum of all component R-values: 1.0 + 13.0 + 0.5 + 0.7 = 15.2.
Which type of window frame material has the highest thermal conductivity, representing the worst thermal performance?
Answer: Aluminum without thermal break
Aluminum without a thermal break has very high thermal conductivity, making it the poorest performing frame material for thermal resistance.
When auditing exterior wall insulation, a thermal bridge most commonly occurs at:
Answer: Structural framing members (studs, plates, headers)
Thermal bridges in wall assemblies most commonly occur at structural framing members like studs, plates, and headers, which conduct heat more readily than cavity insulation.
Color Rendering Index (CRI) measures:
Answer: How accurately a light source renders object colors compared to natural light
CRI measures how accurately a light source renders the colors of objects compared to a reference light source, on a scale of 0 to 100.
In a hot climate, which roof strategy provides the greatest reduction in cooling load?
Answer: Installing a white or light-colored reflective roof coating
A highly reflective (cool) roof coating dramatically reduces solar heat gain by reflecting up to 80% of solar radiation, directly cutting cooling loads.
What lighting metric represents the amount of light falling on a surface, measured in foot-candles or lux?
Answer: Illuminance
Illuminance, measured in foot-candles (fc) or lux, quantifies the amount of light incident on a surface and is used to determine if task lighting levels are adequate.