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?

A. 2.0 years

B. 3.0 years

C. 4.0 years

D. 5.0 years

If the initial design process includes group relamping, how can this reduce the number of lamps required to illuminate a space?

A. Group relamping reduces factors that contribute to light loss, which means fewer lamps are required to illuminate a space

B. Group relamping reduces the overall amount of lamp breakages, which means fewer lamps are required to illuminate a space.

C. Group relamping requires using larger Wattage lamps, which means fewer lamps are required to illuminate a space

D. Group relamping improves the room cavity ratio, which means fewer lamps are required to illuminate a space

E. Group relamping cannot reduce the number of lamps required to illuminate a space

A 3 MW rated wind-powered turbine has a rotor diameter of 113 meters. What is the efficiency of the wind turbine at rated power if it is operating in wind power calculated at 8.6 MW? Assume an air density of 1.225 kg/m³.

A. 28.4%

B. 34.9%

C. 42.7%

D. 59.3%

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).

A. 127.2 MJ

B. 169.3 MJ

C. 210.5 MJ

D. 511.2 MJ

Which pump system listed below is most likely the best application for converting to variable-speed drive?

A. Pump system with parallel rotary lobe pumps in a rebar quenching application with a static head of 80m

B. Pump system with on-off control transferring liquid vertically from a low tank to a higher tank

C. Pump system with bypass control transferring liquid from an intake dam to a process in production

D. Pump system with throttle fully open circulating liquid in a closed loop cooling system

Which of the following steam turbines will likely not provide steam output at a useable temperature for industrial processes?

A. Extraction turbine

B. Back-pressure turbine

C. Condensing turbine

D. Answers A and B

A facility has a monthly peak power demand of 1,000 kW and an average power factor of 80%. The facility pays a demand charge of $7.50/kVA-month. What is the additional cost per month because the power factor is less than 100%?

A. $0/month

B. $187/month

C. $1,875/month

D. $2,244/month

You are using a performance contract to finance the added cost of using more-efficient equipment in the construction of a new building. Which of the following International Performance Measurement and Verification Protocol (IPMVP) options would you use to verify annual energy savings?

A. Option A - Retrofit isolation: key parameter measurement

B. Option B - Retrofit isolation: all parameter measurement

C. Option C - Whole facility measurement

D. Option D - Calibrated simulation

E. Option E - Stipulated savings

A building is conditioned by an air-conditioning and heating system. What technology can directly prevent simultaneous heating and cooling of the space?

A. Derivative control

B. Air handling unit

C. Variable air volume control

D. Setback thermostat

E. Indoor air quality sensors

Thermal scans of electrical equipment are useful for:

A. Locating areas of high power factor

B. Reading current carrying capacity of installed conductors

C. Locating a loose electrical connection

D. Measuring the load on a refrigerant system

When comparing two similar facilities, you see that the facility with newer, higher-efficiency equipment has a higher energy-use index [EUI] (kJ/m²-yr). What might be the cause?

A. The facility with the higher EUI is in need of commissioning

B. The facility with the lower EUI is in need of commissioning

C. The facility with the lower EUI requires a performance contract

D. The facility with the higher efficiency equipment should have a higher EUI

E. The facility with the higher EUI requires a supervisory control and data acquisition (SCADA) system

How can you tell if steam traps in a steam distribution system may NOT be working correctly?

A. Robust flash steam rising from condensate receiver tank vent pipes

B. An increase in make-up water requirements relative to steam demand

C. Rapid chattering of disk steam traps

D. No sound from inverted bucket steam traps

E. All of the above