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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Building Envelope | 8-12% | - Daylighting and shading - Insulation types and R-values - Air leakage and infiltration - Thermal envelope analysis - Windows and glazing systems |
| Topic 2: Electric Power Systems | 10-15% | - Lighting systems and controls - Motors and drives - Power factor correction - Power distribution systems - Harmonics and power quality - Standby power systems |
| Topic 3: Renewable Energy Technologies | 8-12% | - Geothermal systems - Wind energy systems - Solar photovoltaic systems - Solar thermal systems - Energy storage technologies - Biomass and bioenergy |
| Topic 4: Facilities Management | 8-12% | - Operations and maintenance best practices - Building automation systems (BAS) - Preventive maintenance programs - Commissioning and re-commissioning - Monitoring and targeting (M&T) |
| Topic 5: Environmental and Regulatory Compliance | 5-10% | - Carbon footprint calculation - EPA regulations (Clean Air Act, Clean Water Act) - Energy reporting requirements - Green building standards (LEED, ENERGY STAR) - Sustainability reporting |
| Topic 6: Heating, Ventilating, and Air Conditioning (HVAC) | 12-18% | - Controls and optimization - HVAC system types and components - Indoor air quality - Load calculations - Equipment efficiency ratings - Heat transfer principles - Psychrometrics |
| Topic 7: Energy Project Implementation | 8-12% | - Energy service companies (ESCOs) - Measurement and verification (M&V) - Implementation strategies - Project financing models - Project risk management - Performance contracting (ESPC) |
| Topic 8: Energy Accounting and Economics | 10-15% | - Energy cost accounting and allocation - Life cycle cost analysis (LCCA) - Financial analysis techniques (ROI, NPV, IRR) - Energy price forecasting - Utility rate structures and tariffs |
| Topic 9: Energy Auditing | 15-20% | - Data collection and analysis - Baseline establishment - Audit report writing - Audit procedures and methodologies - Types of energy audits (preliminary, detailed, investment-grade) - Metering and measurement equipment |
The Pass4suresVCE is committed from the day first to ace the Certified Energy Manager (CEM) (CEM) exam questions preparation at any cost. To achieve this objective Pass4suresVCE has hired a team of experienced and qualified AEE CEM certification exam experts. They utilize all their expertise to offer top-notch Certified Energy Manager (CEM) (CEM) exam dumps. These CEM exam questions are being offered in three different but easy-to-use formats.
NEW QUESTION # 91
Which of the following is NOT a typical benefit of performance contracting from the building owner's perspective?
Answer: B
Explanation:
CEM materials clearly state that performance contracting:
* Requires detailed audits
* Includes complex legal, financial, and M&V structures
* Is not quick or simple
All other options are recognized benefits to building owners.
NEW QUESTION # 92
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.]
Answer: A
Explanation:
To calculate the cost of heating water using natural gas:
Step 1: Compute Energy Required to Heat the Water
Given:
* Mass of water= 500 L = 500 kg
* Temperature rise (#T)= 50°C - 18°C = 32°C
* Specific heat of water (Cp)= 4.2 kJ/kg-°C
Energy Required (Q)=m×Cp×#T
=500×4.2×32
=67,200 kJ=67.2 MJ
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NEW QUESTION # 93
Why do electric utility companies transmit power at high voltages?
SELECT THE CORRECT ANSWER
Answer: B
Explanation:
Electric utility companies transmit power at high voltages primarily to reduce transmission power losses, which are proportional to the square of the current (I²) multiplied by the resistance (R) of the transmission lines. This relationship is expressed by the formula for power loss: P_loss = I²R.
Key Points:
* Power Loss and Current Relationship:Power losses in transmission lines are directly proportional to the square of the current flowing through them. Reducing the current decreases these losses significantly.
* High Voltage Transmission:By increasing the transmission voltage, the current required to deliver the same amount of power decreases. This is because power (P) is the product of voltage (V) and current (I): P = VI. For a given power level, increasing voltage allows for a corresponding decrease in current.
* Reduced I²R Losses:Lower current results in reduced I²R losses, enhancing the efficiency of power transmission over long distances.
Conclusion:
Transmitting power at high voltages minimizes transmission losses, making it the most efficient method for long-distance electrical power delivery. Therefore, the correct answer is C. Transmission power losses (I²R) are less.
NEW QUESTION # 94
How much energy (kJ) is required to heat 2 kg of water from 25°C to 2 kg of water at 100°C? (The specific heat of water (C) is 4.2 kJ/kg-°C. Assume no system losses.)
Answer: A
NEW QUESTION # 95
What is the Energy Use index (EUl) for a 4,000 m2 building that uses the following amountsof energy each year?
Answer: E
Explanation:
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NEW QUESTION # 96
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