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AEE Certified Energy Manager (CEM) Sample Questions:

1. Which of the following statements best describe Demand Control Ventilation (DVC) in Building Automation Systems?

A) It's a prescriptive procedure in which outdoor air intake rates are calculated based on the energy cost method that compares a proposed building design to a base annual energy cost design
B) It satisfies indoor ventilation rates by preconditioning outdoor air with the exhaust air to decrease energy cost during cold, warm, or humid weather
C) It's an active evaluation of outdoor and indoor space conditions to determine the amount of thermal, mechanical and natural conditioning that is required
D) It's a building standard for enclosed spaces in which biological, chemical, and physical contaminants are considered to meet thermal comfort requirements

2. What is the best type of heat exchanger to recover and transfer latent heat energy from one air stream to another?

A) Heat pipe
B) Shell and tube
C) Ceramic recuperator
D) Run-around system
E) Desiccant heat wheel

3. An outdoor parking area has 25 light poles. Each pole has a 420 Watt (ballast included) high-pressure sodium (HPS) luminaire. The parking area lights are illuminated 4,500 hours per year and the electricity cost is $0.08
/kWh. What is the annual energy cost reduction if each luminaire is replaced with a 220-Watt (driver included) LED luminaire?

A) $2,200/yr
B) $1,800/yr
C) $2,600/yr
D) $1,200/yr
E) $1,500/yr

4. A fully-loaded heat pump unit delivers 36-kW thermal heating with a power draw of 12-kW electric. What is the coefficient of performance (COP) at full load?

A) 3.0
B) 5.0
C) 6.0
D) 2.0
E) 4.0

5. An energy project implemented today saves $10,000 per year for the next 20 years. Using the 5% interest table, determine the total value of savings at the end of the 20th year?

A) $124,620
B) $496,991
C) $330,660
D) $146,907
E) $200,000

Solutions: