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AEE.CEM.v2025-08-11.q61
Question 58
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A 1OO-kW packaged engine-generate combined heat and power (CHP) system has the specifications listed below. The CHP equipment operates fully loaded for 8.000 h/yr. What isthe annual fuel cost for the ChP equipment? CMP equipment specifications: Electrical output 100kw Electrical efficiency: 25% Thermal recovery efficiency: 50*6 Total CMP efficiency: 75% Additional information: Fuel cost: S3.S0/GJ Electricity cost S0.06/kWh Previous water heating efficiency: 8046 Mot water usage: 75,700 liters/day (21 *C temperature rise) [The question from the previous image, which was about calculating the annual cost of heat loss through a wall, but had a discrepancy between the calculated cost and the provided answer choices]
Question List (61q)
Question 1: When should commissioning be included in the design and cons...
Question 2: Which problems can be caused by poor power quality?...
Question 3: Using the lumen method, calculate the number of luminaires (...
Question 4: Which is the best application for variable-speed drives?...
Question 5: What term describes the difference between the control signa...
Question 6: Which of the following International Performance Measurement...
Question 7: A cooling tower is delivering water to a chilled-water plant...
Question 8: How does an enthalpy-based economizer control operate?...
Question 9: Which motor parameter is the most difficult to measure with ...
Question 10: A concentrating solar thermal system collects 5 GJ/h of ther...
Question 11: Using an interest rate of 15%, an energy project has a net-p...
Question 12: A 50-Hz alternating current (AC) induction motor has 3 pole ...
Question 13: Which of the following statements best describe Demand Contr...
Question 14: Infiltration (inward air leakage) in a building is dependent...
Question 15: A facility replaces a natural gas heating system rated at 10...
Question 16: A refrigerant-to-water heat exchanger can be added to air-co...
Question 17: A steam trap with a 6-mm orifice in an 0.8-MPa steam system ...
Question 18: Electricity costs SO. 10 per kWh. if an electric water heate...
Question 19: What is a common method to reduce the impact of voltage imba...
Question 20: The International Performance Measurement and Verification P...
Question 21: Which of the following steam turbines will likely not provid...
Question 22: A cooling tower delivers 29°C water to a central chilled wat...
Question 23: A desk lamp is located inside a windowless office. The offic...
Question 24: What is the purpose of monitoring energy consumption? SELECT...
Question 25: A new energy-efficient boiler costs $60,890 to buy and insta...
Question 26: Which of the following is a closed-loop controller?...
Question 27: A compressed air system has a total volume of 247,500 liters...
Question 28: Periodic commissioning of a building automation system (BAS)...
Question 29: A 7 bar (gauge pressure) compressed air system has 5 leaks t...
Question 30: Which of the following color temperatures looks more like da...
Question 31: How can you tell if steam traps in a steam distribution syst...
Question 32: If the initial design process includes group relamping, how ...
Question 33: Which type of lighting control technique operates in "manual...
Question 34: What is a common cause of poor power quality?...
Question 35: In a warehouse, lights are mounted 4 meters above the floor....
Question 36: Exhaust gases from an industrial furnace flow through a heat...
Question 37: What is the Energy Use index (EUl) for a 4,000 m2 building t...
Question 38: Which of the following statements best describe Demand Contr...
Question 39: Which heat recovery device listed below can be used to prehe...
Question 40: A motor operates with a normal and constant load. The electr...
Question 41: What does a manometer measure?
Question 42: Lighting systems operate with a certain recoverable light lo...
Question 43: Which of the following statements regarding refrigerants is ...
Question 44: Air is heated from 10°C (dry bulb temperature) and 80% relat...
Question 45: In a chilled water thermal energy storage system, chilled wa...
Question 46: Natural gas costs $4.80/GJ. How much does it cost to heat 50...
Question 47: A compressed-air distribution system has one section that fr...
Question 48: Why do electric utility companies transmit power at high vol...
Question 49: An energy-saving project costs $540,000. The project will ha...
Question 50: Using the natural gas combustion efficiency tables in your w...
Question 51: What instrument is NOT used to measure temperature?...
Question 52: A controller has a signal output that can range from 4 to 20...
Question 53: A gas-fired boiler is operating with 31.9% excess air. A fee...
Question 54: If a boiler cycles on and off too frequently, what control c...
Question 55: Which electric rate tariff would best cost justify a thermal...
Question 56: What instrument determines flow rate by measuring pressure d...
Question 57: Which of the following controls can optimize the operation o...
Question 58: A 1OO-kW packaged engine-generate combined heat and power (C...
Question 59: A facility owner is considering installing a new chiller. Th...
Question 60: A 100-kW electrical load has a power factor of 75%. What cap...
Question 61: An air-conditioning system at full load is rated at 70-kW (t...
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