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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Renewable Energy Technologies | 8-12% | - Solar photovoltaic systems - Biomass and bioenergy - Energy storage technologies - Solar thermal systems - Wind energy systems - Geothermal systems |
| Topic 2: Electric Power Systems | 10-15% | - Harmonics and power quality - Lighting systems and controls - Standby power systems - Motors and drives - Power factor correction - Power distribution systems |
| Topic 3: Energy Auditing | 15-20% | - Types of energy audits (preliminary, detailed, investment-grade) - Data collection and analysis - Metering and measurement equipment - Audit procedures and methodologies - Baseline establishment - Audit report writing |
| Topic 4: Environmental and Regulatory Compliance | 5-10% | - Sustainability reporting - EPA regulations (Clean Air Act, Clean Water Act) - Green building standards (LEED, ENERGY STAR) - Energy reporting requirements - Carbon footprint calculation |
| Topic 5: Heating, Ventilating, and Air Conditioning (HVAC) | 12-18% | - Psychrometrics - Indoor air quality - Controls and optimization - HVAC system types and components - Load calculations - Heat transfer principles - Equipment efficiency ratings |
| Topic 6: Building Envelope | 8-12% | - Thermal envelope analysis - Daylighting and shading - Air leakage and infiltration - Windows and glazing systems - Insulation types and R-values |
| Topic 7: Energy Project Implementation | 8-12% | - Energy service companies (ESCOs) - Performance contracting (ESPC) - Project financing models - Measurement and verification (M&V) - Implementation strategies - Project risk management |
| Topic 8: Facilities Management | 8-12% | - Monitoring and targeting (M&T) - Commissioning and re-commissioning - Preventive maintenance programs - Operations and maintenance best practices - Building automation systems (BAS) |
| Topic 9: Energy Accounting and Economics | 10-15% | - Utility rate structures and tariffs - Energy price forecasting - Financial analysis techniques (ROI, NPV, IRR) - Life cycle cost analysis (LCCA) - Energy cost accounting and allocation |
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NEW QUESTION # 50
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: C
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 # 51
A piece of equipment costs $250,000 to buy and install. The annual operating cost for the equipment is
$50,000 per year. The equipment will last 15 years. After 15 years, the equipment will have no net salvage value. The annual interest rate is 10%. What is the present value of the life-cycle cost to own and operate the equipment? Use end-of-year annual cash flow analysis.
Answer: C
NEW QUESTION # 52
Which type of single-phase alternating-current motor has the highest efficiency?
Answer: A
NEW QUESTION # 53
What is the purpose of top (or skimming) blowdown in a steam boiler?
Answer: A
NEW QUESTION # 54
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]
Answer: C
NEW QUESTION # 55
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