Certified Energy Auditor Certification Certified Energy Auditor Data Collection and Analysis Questions and Answers 2

Question 1

When conducting a preliminary energy audit, which data source is most critical for establishing a building's baseline energy consumption?

Accepted Answer

Utility billing history for at least 12 months

Answer

A single month's peak demand reading

Answer

The building's original design specifications

Answer

Occupant survey responses

Question 2

What is the primary purpose of normalizing energy data using heating degree days (HDD) and cooling degree days (CDD)?

Accepted Answer

To account for weather variations when comparing energy use across different periods

Answer

To compare energy performance across different climate zones

Answer

To calculate the R-value of building insulation

Answer

To determine the correct HVAC equipment sizing

Question 3

During a walk-through energy audit, an auditor measures lighting power density at 1.8 W/sq ft in an office space. According to ASHRAE 90.1, the allowance is 0.82 W/sq ft. What does this indicate?

Accepted Answer

There is a significant energy conservation opportunity in lighting

Answer

The lighting system is operating within acceptable parameters

Answer

The measurement equipment is likely miscalibrated

Answer

The space requires additional lighting fixtures

Question 4

Which regression analysis technique is most commonly used to develop a baseline energy model from utility data?

Accepted Answer

Three-parameter change-point model

Answer

Polynomial regression with five variables

Answer

Logistic regression analysis

Answer

Neural network modeling

Question 5

An energy auditor collects interval meter data showing 15-minute demand readings. What analysis is best performed with this granularity of data?

Accepted Answer

Identification of base load and peak demand patterns

Answer

Annual energy cost estimation

Answer

Calculation of annual degree days

Answer

Estimation of building envelope R-values

Question 6

When performing an energy balance on a commercial building, the sum of all end-use energy estimates accounts for only 72% of the metered total. What should the auditor do first?

Accepted Answer

Re-examine the largest energy end uses and verify measurement assumptions

Answer

Accept the result since 72% is close enough for audit purposes

Answer

Report the discrepancy as unaccounted-for energy without further investigation

Answer

Increase all end-use estimates proportionally to reach 100%