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AEE Certified Energy Manager (CEM) Sample Questions:

1. Which of the following is NOT a typical benefit of performance contracting from the building owner's perspective?

A) Maintenance services provided by the performance contractor can add value to the overall savings achieved
B) The energy-service company can have a financial incentive to achieve projected savings
C) Performance contracting is a simple and quick process
D) Performance contracting can provide access to external financing when the owner may not have sufficient equity for in-house financing for large projects
E) Net cash flow can be neutral or positive for the owner

2. A building is conditioned by an air-conditioning and heating system. What technology can directly prevent simultaneous heating and cooling of the space?

A) Air handling unit
B) Derivative control
C) Setback thermostat
D) Indoor air quality sensors
E) Variable air volume control

3. Which of the following controls can optimize the operation of lighting systems?

A) Photocells
B) Dimming ballasts
C) All of the above
D) Timer
E) Occupancy sensors

4. A heat pump water heater has an annual average coefficient of performance (COP) of 2.1 and heats water from 15°C to 50°C. Hot water use is 100 liters per day, 365 days/yr. The electricity cost is $0.10/kWh. What is the annual water heating cost? (The specific heat of water (C) is 4.2 kJ/kg-°C.)

A) $88.29/year
B) $52.20/year
C) $64.66/year
D) $70.97/year
E) $44.88/year

5. A facility has the thermal cooling load profile shown in the table below. The utility rate tariff has an on-peak time-of-use billing period that begins at 10:00 a.m. and ends at 7:00p.m. Calculate the storage capacity required for a load-shifting operating strategy, to make sure that no thermal cooling Is generated by the chiller during the on-peak utility rate period.

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

A) 72 GJ
B) 84 GJ
C) 66 GJ
D) 48 GJ

Solutions: