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| Section | Objectives |
|---|---|
| Renewable Energy and Sustainability | - Renewable energy integration - Sustainable energy management practices |
| Energy Audits and Management | - Energy management planning - Data collection and analysis methods - Energy audit levels and procedures |
| Mechanical and Thermal Systems | - Compressed air systems - HVAC systems and optimization - Boilers, steam systems, and thermal distribution |
| Lighting Systems | - Lighting efficiency improvement strategies - Lighting technologies and controls |
| Electrical Systems | - Motors and drives efficiency - Power factor correction - Electrical distribution systems |
| Energy Accounting and Economics | - Energy cost analysis and tariff structures - Energy budgeting and benchmarking - Life-cycle cost analysis and financial evaluation |
| Measurement and Verification | - Energy savings calculation methods - M&V principles and protocols |
1. A cooling tower is delivering water to a chilled-water plant. The cooling tower outlet temperature has a 6°C approach temperature to the ambient air, wet-bulb temperature. The outside air conditions are 20°C dry bulb,
60% relative humidity. Using the psychrometric chart, at what temperature can the cooling tower deliver water to the chilled-water plant?
A) 25°C
B) 17°C
C) 21°C
D) 13°C
2. Which of the following controls can optimize the operation of lighting systems?
A) All of the above
B) Occupancy sensors
C) Dimming ballasts
D) Photocells
E) Timer
3. A 50-Hz alternating current (AC) induction motor has 3 pole pairs (6 poles). What is the synchronous speed of the motor?
A) 750 rpm
B) 1,000 rpm
C) 1,500 rpm
D) 600 rpm
4. A compressed air system has a total volume of 247,500 liters. During a 30-minute break in production (air compressor system turned off and no production demand for compressed air), the system pressure drops from
7 bar, gauge (700 kPa, gauge) to 5 bar, gauge (500 kPa, gauge). Calculate the leakage rate in the compressed air system.
A) 48,250 liters/minute
B) 16,500 liters/minute
C) 8,250 liters/minute
D) 22,750 liters/minute
E) 32,000 liters/minute
5. The set point for the chiller supply water temperature is varied as a function of the thermal demand for space cooling. What do you call this control strategy?
A) Condenser-water temperature reset
B) Night setback
C) Chilled-water temperature reset
D) Reheat coil reset
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: A | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: C |
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