AEE Certified Energy Manager (CEM) - CEM무료 덤프문제 풀어보기
What is the best type of heat exchanger to recover and transfer latent heat energy from one air stream to another?
정답: C
Which of the following is NOT a renewable-energy resource?
SELECT THE CORRECT ANSWER
SELECT THE CORRECT ANSWER
정답: E
설명: (Fast2test 회원만 볼 수 있음)
Which of the following statements best describe Demand Control Ventilation (DVC) in Building Automation Systems?
정답: A
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.]
The specific heat of water (C) is 4.2 kJ/kg-°C.]
정답: D
설명: (Fast2test 회원만 볼 수 있음)
What does a manometer measure?
정답: D
설명: (Fast2test 회원만 볼 수 있음)
A 100-kW electrical load has a power factor of 75%. What capacitance, in KVAR, will improve the power factor to 95%?
정답: E
An energy-saving project costs $540,000. The project will have maintenance costs of $25,000 per year. The energy savings from the project are $160,000 per year. What is the simple payback of the project?
정답: A
설명: (Fast2test 회원만 볼 수 있음)
How much fuel is required to heat 50 kg water from 20°C water to 200°C saturated steam? Assume the boiler is 80% efficient (based on the higher-heating value of the fuel).
정답: A
A facility replaces a natural gas heating system rated at 10,000 kJ/h and 80% efficiency with an electric heat pump rated at 10,000 kJ/h and a coefficient of performance (COP) of 2.3. Will this project also reduce the annual energy utilization index (EUI) for the facility?
정답: A
설명: (Fast2test 회원만 볼 수 있음)
What instrument determines flow rate by measuring pressure differential?
정답: C
설명: (Fast2test 회원만 볼 수 있음)