最新のCEM問題集で試験を準備する

AEE CEM 試験概要:

AEE CEM 試験シラバストピック:

AEE Certified Energy Manager (CEM) 認定 CEM 試験問題：

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

2. An energy-saving project costs $540,000. The project will have maintenance costs of $25,000 per year. The energy savings from the project are $160,000 per year. What is the simple payback of the project?

A) 3.0 years
B) 4.0 years
C) 2.0 years
D) 5.0 years

3. If the temperature difference across an external wall is 20°C and the heat flow across the wall is 2.5 Watts/m², calculate the insulation value of the wall (including inside and outside air films)?

A) R = 4 m²-°C/W
B) R = 10 m²-°C/W
C) R = 12 m²-°C/W
D) R = 6 m²-°C/W
E) R = 8 m²-°C/W

4. Which of the following is a closed-loop controller?

A) Manual dimmer for a light switch
B) Accelerator pedal in an automobile
C) Thermostat for an air conditioning unit
D) Time clock schedule controller

5. Using the natural gas combustion efficiency tables in your workbook, find the combustion efficiency (based on higher-heating value) of a natural-gas-fired boiler if the excess air level is measured at 31.9% and the stack temperature rise is 187.8°C.

A) 84%
B) 80%
C) 76%
D) 82%
E) 78%

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