Energy Audit Process 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 Energy Audit Process flashcards as text
Which field measurement technique is used to determine the thermal resistance of an existing wall assembly without destructive testing?
Answer: Infrared thermography combined with heat flux meter
A calibrated heat flux meter measures heat flow through a wall section while infrared thermography identifies thermal anomalies, together allowing in-situ R-value calculation.
In energy auditing, what does the term 'Energy Use Intensity' (EUI) represent?
Answer: Annual energy consumption per unit of floor area (kBtu/sf/yr)
EUI normalizes a building's total annual energy consumption by its gross floor area, enabling comparison across similar building types.
A facility has a power factor of 0.72. What corrective measure should an energy auditor recommend?
Answer: Add power factor correction capacitors
Capacitor banks counteract the inductive reactive power from motors and transformers, raising power factor closer to unity and reducing utility demand charges.
During duct leakage testing, a total duct leakage of 25% of system airflow is measured. Which consequence is most directly associated with this finding?
Answer: Conditioned air delivered to unconditioned spaces, wasting heating/cooling energy
Duct leakage in unconditioned spaces (attics, crawlspaces) means conditioned air never reaches occupied zones, directly increasing HVAC energy consumption.
What is the main advantage of using an electrical sub-meter during an energy audit compared to relying solely on utility bills?
Answer: It isolates energy use by system or end-use for precise savings calculations
Sub-metering disaggregates total building energy into end-uses (lighting, HVAC, plug loads), enabling auditors to target the highest-impact measures accurately.
Which occupancy-related factor should an auditor collect to properly normalize energy consumption for comparison purposes?
Answer: Annual operating hours and occupant density
Operating hours and occupant density directly drive plug loads, lighting schedules, and HVAC demand, making them essential for accurate normalization and benchmarking.
An auditor identifies a steam trap that is continuously passing steam (failed open). What is the primary energy impact?
Answer: Continuous live steam waste, increasing boiler fuel consumption
A failed-open steam trap allows live steam to bypass the condensate return continuously, wasting significant boiler fuel to regenerate that steam.