CBCP Energy Management & Sustainability Flashcards
6 cards from real CBCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CBCP Energy Management & Sustainability flashcards as text
What is 'recommissioning' and when is it typically performed?
Answer: Re-applying the commissioning process to an existing building to restore or improve performance after years of operation
Recommissioning re-applies commissioning procedures to an existing building, typically every 3–5 years, to restore optimum performance as systems drift.
What is 'free cooling' (economizer operation) and how does it reduce energy consumption?
Answer: Using outdoor air or cooling tower water to provide cooling without running mechanical refrigeration when outdoor conditions are favorable
Free cooling uses favorable outdoor conditions (cool air or water) to provide cooling, bypassing compressor-based refrigeration and dramatically reducing energy use.
During commissioning of a lighting control system, occupancy sensors fail to turn off lights after occupants leave. Which parameter should be adjusted?
Answer: Occupancy sensor time-delay (timeout) setting
The timeout delay setting controls how long the sensor waits after detecting no motion before turning off the lights.
What is the role of a 'commissioning plan' in an energy-focused commissioning project?
Answer: Documenting the scope, schedule, responsibilities, and procedures for all commissioning activities to ensure energy performance goals are achieved
The commissioning plan is the governing document that outlines how commissioning will be conducted, ensuring organized execution toward performance targets.
A building's cooling tower approach temperature (difference between leaving water temp and wet bulb temp) is significantly higher than design. What is the most likely cause?
Answer: Fouled or partially blocked fill media reducing heat transfer effectiveness
Fouled fill media reduces the surface area for evaporative heat transfer, increasing the approach temperature and degrading cooling tower efficiency.
What sustainability certification program requires commissioning as a prerequisite for all project types?
Answer: LEED (Leadership in Energy and Environmental Design)
LEED requires Fundamental Commissioning as a prerequisite, meaning no project can achieve LEED certification without completing it.