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AEE CEM Exam Syllabus Topics:

AEE Certified Energy Manager (CEM) Sample Questions:

1. A compressed air system has a total volume of 247,500 liters. During a 30-minute break in production (air compressor system turned off and no production demand for compressed air), the system pressure drops from
7 bar, gauge (700 kPa, gauge) to 5 bar, gauge (500 kPa, gauge). Calculate the leakage rate in the compressed air system.

A) 22,750 liters/minute
B) 48,250 liters/minute
C) 16,500 liters/minute
D) 32,000 liters/minute
E) 8,250 liters/minute

2. The temperature in an unconditioned mechanical room is found to typically be around 23°C warmer than ambient (outside) air. If the air intake of an air compressor located in the mechanical room is routed through a nearby wall so that the cooler outside air is fed directly to the air compressor's intake, the compressor's energy requirement will now be expected to:
SELECT THE CORRECT ANSWER

A) Decrease by 7.6%
B) Increase by 3.8%
C) Remain the same
D) Increase by 7.6%
E) Decrease by 3.8%

3. How can you tell if steam traps in a steam distribution system may NOT be working correctly?

A) An increase in make-up water requirements relative to steam demand
B) No sound from inverted bucket steam traps
C) All of the above
D) Rapid chattering of disk steam traps
E) Robust flash steam rising from condensate receiver tank vent pipes

4. A facility has the thermal cooling load profile shown in the table below. The utility rate traffic has an no-peak time-of-use period that begins at 10:00 a.m ends at 7:00 p.m. What chiller capacity (output) is required for a load-leveling operating strategy?

[Question from the previous image, which was about chiller capacity for load leveling, but the table was missing]

A) 5.0 GJ/h
B) 8.0 GJ/h
C) 7.0 GJ/h
D) 4.0 GJ/h

5. A facility uses 250,000 kWh in a 31-day billing period. The peak demand in the billing period is 1,200 kW.
What is the facility partial load factor?

A) 77%
B) 66%
C) 33%
D) 45%
E) 28%

Solutions: