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| Section | Weight | Objectives |
|---|---|---|
| Building Automation and Controls | 5% | - Building management systems - Control systems and strategies - Automation and optimization |
| HVAC Systems and Building Envelope | 15% | - Thermal envelope performance - Heating, ventilation and air conditioning - Load calculation and system selection |
| Energy Audits and Instrumentation | 10% | - Measurement tools and instrumentation - Data collection and analysis - Energy performance indicators - Audit levels and methodologies |
| Distributed Generation and Renewable Energy | 4–6 | - Combined heat and power (CHP) - Grid integration and economics - Solar, wind, biomass, geothermal |
| Measurement and Verification | 5% | - M&V protocols and standards - Baseline development and savings calculation |
| Energy Savings Performance Contracting | 5% | - Guaranteed savings and risk allocation - Contract structures and financing |
| Electrical Power Systems and Motors | 15% | - Power distribution and quality - Motor systems, efficiency and controls - Power factor correction and load management |
| Energy Storage Systems | 3–5 | - Storage technologies and applications - Integration and benefits |
| Codes, Standards and Regulations | 5% | - Compliance and reporting requirements - Energy efficiency codes and standards - Sustainability policies and frameworks |
| Industrial Systems | 6–8 | - Process energy efficiency - Compressed air, pumping, and drying systems |
| Operations, Maintenance and Commissioning | 5% | - Maintenance best practices - Commissioning and retro-commissioning |
| Boiler and Steam Systems | 4–6 | - Maintenance and optimization - Operation and efficiency |
| Energy Accounting and Economics | 15% | - Life cycle costing and economic analysis - Energy units and conversions - Utility rate structures and tariffs - Time value of money, NPV, IRR, payback analysis |
| Lighting Systems | 10% | - Daylighting integration - Design and control strategies - Lighting technologies and efficiency |
With the dumps, you can quickly review the topics and revise them before taking the actual exam. The AEE CEM Dumps also provide detailed explanations and solutions to every question so that you can understand the concept better. This will ensure that you are well-prepared to take the exam. With our premium quality resources and unbeatable prices, you are guaranteed to pass your Certified Energy Manager (CEM) certification exams.
NEW QUESTION # 14
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?
Answer: A
NEW QUESTION # 15
Which motor parameter is the most difficult to measure with precision?
Answer: A
NEW QUESTION # 16
In a chilled water thermal energy storage system, chilled water is stored at 4°C and used for supply water.
Chilled water return is 14°C. Calculate the storage capacity required to hold 50 GJ of thermal cooling. (The specific heat of water (C) is 4.2 kJ/kg-°C. Assume no system losses.)
Answer: D
Explanation:
1) Define what is being asked (CEM context)
For a chilled-water thermal energy storage (TES) system, AEE CEM guidance states that storage capacity is determined from:
Where:
* = stored thermal energy
* = mass of water
* = specific heat of water
* = temperature difference between supply and return
This equation is explicitly used in CEM thermal energy storage sizing problems (AEE CEM Body of Knowledge - Cooling Systems & Thermal Storage).
2) Given data
* Required cooling storage:
* Chilled water supply temperature = 4°C
* Chilled water return temperature = 14°C
* Temperature difference:
* Specific heat of water:
* Density of water (CEM standard assumption):
3) Solve for required water mass
4) Convert mass to volume
Using water density:
NEW QUESTION # 17
Which motor parameter is the most difficult to determine accurately?
SELECT THE CORRECT ANSWER
Answer: A
NEW QUESTION # 18
Which of the following is/are benefits of commissioning?
Answer: E
Explanation:
1) Definition of Commissioning (CEM Standard)
According to the AEE Certified Energy Manager (CEM) Body of Knowledge and the ASHRAE/AEE commissioning guidance referenced in CEM training, commissioning (Cx) is a systematic quality assurance process applied throughout the design, installation, startup, and operation phases of a facility to ensure that building systems perform as intended by the owner and designer.
2) Evaluation of Each Option
* A. Ensures a system is designed to operate as intended
* Commissioning includes design review to verify that the design intent, owner's project requirements (OPR), and basis of design (BOD) are aligned.
* CEM materials explicitly include design-phase commissioning as a benefit.
* B. Ensures a system is installed to operate as intended
* Construction and installation verification is a core commissioning activity.
* Functional performance testing confirms systems are installed and perform per design.
* C. Ensures staff know how to operate a system as intended
* Commissioning requires operator training, review of control sequences, and system demonstrations.
* AEE CEM guidance highlights improved operations staff competence as a major benefit.
* D. Ensures staff know how to maintain a system as intended
* Commissioning includes delivery and review of O&M manuals, maintenance procedures, and hands-on training.
* This reduces long-term energy waste and equipment degradation.
3) CEM Exam Key Concept
Commissioning improves energy performance, system reliability, occupant comfort, and staff capability by verifying design intent, installation quality, and operational readiness.
NEW QUESTION # 19
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