Exam Name: Certified Energy Manager (CEM)
Certification Provider: AEE
Corresponding Certification: Energy Management
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AEE CEM Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Energy Project Implementation | 8-12% | - Measurement and verification (M&V) - Performance contracting (ESPC) - Project financing models - Project risk management - Energy service companies (ESCOs) - Implementation strategies |
| Environmental and Regulatory Compliance | 5-10% | - Green building standards (LEED, ENERGY STAR) - Carbon footprint calculation - EPA regulations (Clean Air Act, Clean Water Act) - Energy reporting requirements - Sustainability reporting |
| Energy Accounting and Economics | 10-15% | - Energy cost accounting and allocation - Life cycle cost analysis (LCCA) - Utility rate structures and tariffs - Energy price forecasting - Financial analysis techniques (ROI, NPV, IRR) |
| Heating, Ventilating, and Air Conditioning (HVAC) | 12-18% | - Heat transfer principles - Indoor air quality - HVAC system types and components - Load calculations - Controls and optimization - Psychrometrics - Equipment efficiency ratings |
| Facilities Management | 8-12% | - Building automation systems (BAS) - Monitoring and targeting (M&T) - Commissioning and re-commissioning - Preventive maintenance programs - Operations and maintenance best practices |
| Electric Power Systems | 10-15% | - Motors and drives - Lighting systems and controls - Standby power systems - Power factor correction - Power distribution systems - Harmonics and power quality |
| Renewable Energy Technologies | 8-12% | - Solar thermal systems - Geothermal systems - Energy storage technologies - Solar photovoltaic systems - Biomass and bioenergy - Wind energy systems |
| Building Envelope | 8-12% | - Air leakage and infiltration - Daylighting and shading - Insulation types and R-values - Windows and glazing systems - Thermal envelope analysis |
| Energy Auditing | 15-20% | - Data collection and analysis - Audit report writing - Audit procedures and methodologies - Baseline establishment - Metering and measurement equipment - Types of energy audits (preliminary, detailed, investment-grade) |
AEE Certified Energy Manager (CEM) Sample Questions:
A 75-kW induction motor operates at 80% partial load and 88% efficiency. A new high-efficiency 75-kW motor can be installed that will operate at 95% efficiency (also at 80% partial load). What is the reduction in electric power demand?
- A. 4 kW
- B. 8 kW
- C. 2 kW
- D. 1 kW
- E. 5 kW
Correct Answer: A 🗳️
Exhaust gases from an industrial furnace flow through a heat-recovery steam generator, which generates medium-pressure steam. This steam is used in a steam turbine to generate shaft power driving a fan. Which type of combined heat and power (CHP) cycle does this process describe?
- A. Topping cycle
- B. Combined cycle
- C. This cycle is not a combined heat and power system
- D. Bottoming cycle
Correct Answer: D 🗳️
Which of the following statements regarding refrigerants is NOT correct?
5ELECT THE CORRECT ANSWER
- A. R-32 and R-134a are Hydro Fluoro Carbons with zero ozone depleting potential, and significant global warming impact
- B. R-1234yf is a Hydro Fluoro Olefin with zero ozone depleting potential, and little global warming potential
- C. R-407C is a blended Hydro Fluoro Carbon or near Azeotropic mixture, and can be used as a replacement for R-22 in commercial applications
- D. R-22 is a Hydro Chloro Carbon with significant ozone depleting potential and significant global warming impact
- E. R-11 and R-12 are Chloro Fluoro Carbons with significant ozone depleting potential
Correct Answer: D 🗳️
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Natural gas costs $4.80/GJ. How much does it cost to heat 500 liters of water from 18°C to 50°C using a natural gas water heater with an efficiency of 85%? [The efficiency and fuel price are both based on HHV.
The specific heat of water (C) is 4.2 kJ/kg-°C.]
- A. $0.38
- B. $1.44
- C. $1.25
- D. $0.76
- E. $0.25
Correct Answer: D 🗳️
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A building is conditioned by an air-conditioning and heating system. What technology can directly prevent simultaneous heating and cooling of the space?
- A. Setback thermostat
- B. Variable air volume control
- C. Indoor air quality sensors
- D. Air handling unit
- E. Derivative control
Correct Answer: B 🗳️
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