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Energy Management & Sustainability Flashcards

7 cards from real AFE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Energy Management & Sustainability flashcards as text

  1. Under ASHRAE 90.1, which building system is addressed by the lighting power density (LPD) requirements?

    Answer: Interior and exterior electrical lighting

    ASHRAE 90.1 sets maximum lighting power density limits (W/sq ft) for interior and exterior lighting to ensure energy-efficient lighting design.

  2. What does a Power Purchase Agreement (PPA) allow a facility to do?

    Answer: Buy electricity generated by a third-party renewable system at a fixed rate without owning the equipment

    A PPA allows a facility to purchase renewable electricity from a third-party owner/developer at a predetermined rate, avoiding upfront capital costs for generation equipment.

  3. In the context of sustainable facilities management, what does 'embodied carbon' refer to?

    Answer: Greenhouse gas emissions associated with material extraction, manufacturing, and construction

    Embodied carbon encompasses all GHG emissions from the entire material lifecycle—extraction, processing, manufacturing, transport, and construction—before a building is occupied.

  4. A building's chiller plant has a measured COP of 4.5. What does this value indicate?

    Answer: The chiller produces 4.5 kW of cooling for every 1 kW of electrical input

    COP (Coefficient of Performance) is the ratio of useful cooling output to energy input; a COP of 4.5 means 4.5 units of cooling are delivered per unit of electricity consumed.

  5. Which strategy is most effective for reducing a facility's peak electrical demand during summer afternoons?

    Answer: Pre-cooling the building during morning off-peak hours (thermal mass shifting)

    Pre-cooling exploits lower overnight or morning electricity rates and shifts cooling load away from peak demand periods by storing 'coolth' in the building's thermal mass.

  6. Which ISO standard provides the framework for establishing an Energy Management System (EnMS)?

    Answer: ISO 50001

    ISO 50001 specifies requirements for an Energy Management System, providing organizations with a structured framework to improve energy performance, efficiency, and reduce costs.

  7. A facilities engineer reviews a steam trap survey and finds that 15% of traps are failed-open. What is the primary energy consequence?

    Answer: Live steam is continuously vented to atmosphere, wasting fuel and boiler capacity

    Failed-open steam traps allow live steam to pass through continuously, resulting in direct energy losses as fuel-generated steam is wasted rather than delivering useful heat.