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

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

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Which of the following is NOT a renewable-energy resource?
SELECT THE CORRECT ANSWER

• A.Saw grass
• B.Shale gas
• C.Geothermal heat
• D.Ocean waves
• E.Crop residue

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How does an enthalpy-based economizer control operate?

• A.Measuring the outdoor air dry-bulb temperature and relative humidity
• B.Comparing the difference in dry-bulb air temperature measurements of the return air and the outdoor air
• C.Using a constant mixed air proportion control sequence
• D.Using the dry-bulb temperature and relative humidity of both the outdoor-air and return-air

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A facility replaces a natural gas heating system rated at 10,000 kJ/h and 80% efficiency with an electric heat pump rated at 10,000 kJ/h and a coefficient of performance (COP) of 2.3. Will this project also reduce the annual energy utilization index (EUI) for the facility?

• A.Yes
• B.No

Correct Answer: A

The Energy Utilization Index (EUI) is measured as total energy consumption per unit area.
Step 1: Compare Energy Inputs for Both Systems
* Existing Natural Gas System:
* Heating output: 10,000 kJ/h
* Efficiency: 80%
* Required input energy

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The temperature in an unconditioned mechanical room is found to typically be around 23°C warmer than ambient air. If the air intake of an air compressor located in the mechanical room is routed through a nearby wall so that ambient air is fed directly to the air compressor's intake, what impact can be expected on the air compressor's energy requirement?

• A.Decrease energy use by 7.6%
• B.Increase energy use by 7.6%
• C.Increase energy use by 3.8%
• D.No measureable change in energy use
• E.Decrease energy use by 3.8%

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