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| Section | Weight | Objectives |
|---|---|---|
| Measurement and Verification | 5% | - M&V protocols and standards - Baseline development and savings calculation |
| Codes, Standards and Regulations | 5% | - Compliance and reporting requirements - Sustainability policies and frameworks - Energy efficiency codes and standards |
| Energy Audits and Instrumentation | 10% | - Measurement tools and instrumentation - Energy performance indicators - Audit levels and methodologies - Data collection and analysis |
| Lighting Systems | 10% | - Design and control strategies - Lighting technologies and efficiency - Daylighting integration |
| Energy Savings Performance Contracting | 5% | - Contract structures and financing - Guaranteed savings and risk allocation |
| Energy Accounting and Economics | 15% | - Energy units and conversions - Time value of money, NPV, IRR, payback analysis - Utility rate structures and tariffs - Life cycle costing and economic analysis |
| Energy Storage Systems | 3–5 | - Integration and benefits - Storage technologies and applications |
| HVAC Systems and Building Envelope | 15% | - Load calculation and system selection - Thermal envelope performance - Heating, ventilation and air conditioning |
| Boiler and Steam Systems | 4–6 | - Maintenance and optimization - Operation and efficiency |
| Electrical Power Systems and Motors | 15% | - Power factor correction and load management - Motor systems, efficiency and controls - Power distribution and quality |
| Distributed Generation and Renewable Energy | 4–6 | - Solar, wind, biomass, geothermal - Grid integration and economics - Combined heat and power (CHP) |
| Building Automation and Controls | 5% | - Control systems and strategies - Building management systems - Automation and optimization |
| Industrial Systems | 6–8 | - Process energy efficiency - Compressed air, pumping, and drying systems |
| Operations, Maintenance and Commissioning | 5% | - Commissioning and retro-commissioning - Maintenance best practices |
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NEW QUESTION # 41
At the end of a performance contract, who owns the equipment installed by the project?
Answer: A
NEW QUESTION # 42
Which heat recovery device listed below can be used to preheat boiler make-up water using the heat energy from skimming blowdown?
Answer: D
NEW QUESTION # 43
A facility has the thermal cooling load profile shown in the table below. The utility rate traffic has an no-peak time-of-use period that begins at 10:00 a.m ends at 7:00 p.m. What chiller capacity (output) is required for a load-leveling operating strategy?
[Question from the previous image, which was about chiller capacity for load leveling, but the table was missing]
Answer: B
Explanation:
Comprehensive Detailed Step by Step Explanation with all AEE Energy Manager (CEM) References
* Interpret the load profile (hourly cooling energy):The table gives the facility cooling load in GJ per hour interval (so numerically it's an hourly rate for each hour).
* Compute the total daily cooling energy (sum of 24 hourly loads):
* 12:00 a.m.-6:00 a.m.: 6 hr × 2 = 12 GJ
* 6:00-7:00 a.m.: 4 # 16 GJ
* 7:00-8:00 a.m.: 4 # 20 GJ
* 8:00-9:00 a.m.: 4 # 24 GJ
* 9:00-10:00 a.m.: 6 # 30 GJ
* 10:00-11:00 a.m.: 6 # 36 GJ
* 11:00 a.m.-12:00 p.m.: 8 # 44 GJ
* 12:00-1:00 p.m.: 8 # 52 GJ
* 1:00-2:00 p.m.: 9 # 61 GJ
* 2:00-3:00 p.m.: 9 # 70 GJ
* 3:00-4:00 p.m.: 9 # 79 GJ
* 4:00-5:00 p.m.: 9 # 88 GJ
* 5:00-6:00 p.m.: 8 # 96 GJ
* 6:00-7:00 p.m.: 6 # 102 GJ
* 7:00-8:00 p.m.: 6 # 108 GJ
* 8:00-9:00 p.m.: 4 # 112 GJ
* 9:00-10:00 p.m.: 4 # 116 GJ
* 10:00-11:00 p.m.: 2 # 118 GJ
* 11:00 p.m.-12:00 a.m.: 2 # 120 GJ total per day
So, Total daily cooling energy = 120 GJ.
* Apply the CEM "load-leveling" operating strategy sizing rule:In the AEE CEM Thermal Storage training material, Load Leveling is described as operating the chiller at a constant (or near constant) load for 24 hours per day, and the "load leveling chiller load calculations" are based on Total energy
/ Hours available to operate chillers-for load leveling, that operating window is 24 hours. portal.
aeecenter.org
Therefore:
* Why the "no-peak 10 a.m.-7 p.m." detail doesn't change the load-leveling answer:That time window is typically used when a strategy restricts chiller operation to certain hours (e.g., full load shifting). But load leveling, per the CEM training description, is the strategy where the chiller runs all day at (near) constant load, using storage to absorb the difference between constant production and variable building load
NEW QUESTION # 44
If the temperature difference across an external wall is 20°C and the heat flow across the wall is 2.5 Watts/m², calculate the insulation value of the wall (including inside and outside air films)?
Answer: A
NEW QUESTION # 45
In a performance contract, which group has the greatest investment risk?
Answer: B
Explanation:
In a guaranteed savings performance contract, the ESCO assumes the greatest financial risk, because:
* Payments are tied to verified savings
* ESCO must compensate shortfalls if savings are not achieved
This principle is explicitly tested in the CEM exam.
NEW QUESTION # 46
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