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| Section | Weight | Objectives |
|---|---|---|
| Industrial Systems | 6–8 | - Compressed air, pumping, and drying systems - Process energy efficiency |
| Energy Audits and Instrumentation | 10% | - Measurement tools and instrumentation - Energy performance indicators - Data collection and analysis - Audit levels and methodologies |
| Lighting Systems | 10% | - Lighting technologies and efficiency - Design and control strategies - Daylighting integration |
| Energy Accounting and Economics | 15% | - Time value of money, NPV, IRR, payback analysis - Life cycle costing and economic analysis - Energy units and conversions - Utility rate structures and tariffs |
| Codes, Standards and Regulations | 5% | - Energy efficiency codes and standards - Sustainability policies and frameworks - Compliance and reporting requirements |
| Operations, Maintenance and Commissioning | 5% | - Commissioning and retro-commissioning - Maintenance best practices |
| HVAC Systems and Building Envelope | 15% | - Thermal envelope performance - Heating, ventilation and air conditioning - Load calculation and system selection |
| Measurement and Verification | 5% | - M&V protocols and standards - Baseline development and savings calculation |
| Building Automation and Controls | 5% | - Control systems and strategies - Building management systems - Automation and optimization |
| Energy Storage Systems | 3–5 | - Integration and benefits - Storage technologies and applications |
| Boiler and Steam Systems | 4–6 | - Operation and efficiency - Maintenance and optimization |
| Energy Savings Performance Contracting | 5% | - Contract structures and financing - Guaranteed savings and risk allocation |
| Electrical Power Systems and Motors | 15% | - Power factor correction and load management - Power distribution and quality - Motor systems, efficiency and controls |
| Distributed Generation and Renewable Energy | 4–6 | - Grid integration and economics - Solar, wind, biomass, geothermal - Combined heat and power (CHP) |
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NEW QUESTION # 28
What type of heat exchanger is commonly built into AHU's or large RTU's, can be used to recover heat from exhaust air, and may cause cross-contamination between heat exchange fluids?
Select the Correct Answer
Answer: E
NEW QUESTION # 29
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. The project has a life of 10 years with no salvage value. The minimum attractive rate of return (MARR) is 10%. Using end-of-year cash flows, calculate the net- present value (NPV) of the project.
Answer: B
Explanation:
NEW QUESTION # 30
When comparing two similar facilities, you see that the facility with newer, higher-efficiency equipment has a higher energy-use index [EUI] (kJ/m²-yr). What might be the cause?
Answer: B
Explanation:
1) CEM Principle: Equipment Efficiency # System Performance
The AEE CEM Body of Knowledge stresses that higher-efficiency equipment does not guarantee lower energy use unless systems are:
* Properly commissioned
* Correctly controlled
* Operated as designed
2) Evaluation of Options
* A. The facility with the higher EUI is in need of commissioning #
* Most common cause per CEM case studies: controls, sequences, and integration not optimized.
* B. The facility with the lower EUI is in need of commissioning #
* Lower EUI indicates better performance.
* C. The facility with the lower EUI requires a performance contract #
* No evidence supports this.
* D. The facility with the higher efficiency equipment should have a higher EUI #
* Contradicts energy efficiency principles.
* E. The facility with the higher EUI requires a SCADA system #
* Monitoring alone does not correct poor performance.
CEM Exam Insight
Commissioning ensures that high-efficiency equipment actually delivers expected energy performance.
NEW QUESTION # 31
A building is conditioned by an air-conditioning and heating system. What technology can directly prevent simultaneous heating and cooling of the space?
Answer: C
NEW QUESTION # 32
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.
Answer: D
NEW QUESTION # 33
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