Practice Test Geeks(EMP) Energy Management Professional Practice Test
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Sustainable Practices & Conservation Flashcards

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

Read the first 7 Sustainable Practices & Conservation flashcards as text

  1. A chiller's coefficient of performance (COP) is 4.5. What does this mean?

    Answer: For every 1 kW of electrical input, 4.5 kW of cooling is produced

    COP is the ratio of useful cooling output to electrical energy input; a COP of 4.5 means 4.5 units of cooling per unit of electricity consumed.

  2. Which renewable energy certificate (REC) policy mechanism requires utilities to obtain a specified percentage of power from renewable sources?

    Answer: Renewable Portfolio Standard (RPS)

    A Renewable Portfolio Standard mandates that a percentage of a utility's electricity supply come from eligible renewable energy sources.

  3. Which heat recovery technology extracts energy from exhaust air to pre-condition incoming fresh air in an HVAC system?

    Answer: Energy recovery ventilator (ERV)

    An ERV transfers both sensible heat and latent moisture between exhaust and supply airstreams, reducing conditioning energy.

  4. A facility's monthly electric bill shows a 35% demand charge based on peak 15-minute interval. Which strategy BEST reduces this charge?

    Answer: Staggering start times of large loads to flatten demand peaks

    Staggering large load starts reduces the coincident peak demand during the billing period, directly lowering demand charges.

  5. What is the primary environmental benefit of using low-global-warming-potential (low-GWP) refrigerants in HVAC systems?

    Answer: Reduced contribution to climate change from refrigerant leaks

    Low-GWP refrigerants minimize climate impact when refrigerant leaks occur, since their warming potential is far less than legacy HFCs.

  6. In a simple payback analysis, a lighting retrofit costs $50,000 and saves $12,500 per year. What is the simple payback period?

    Answer: 4 years

    Simple payback = initial cost ÷ annual savings = $50,000 ÷ $12,500 = 4 years.

  7. Which water conservation measure also provides the greatest indirect energy savings in a facility?

    Answer: Reducing hot water consumption through fixture retrofits and insulation

    Reducing hot water use saves both the water itself and the energy needed to heat it, yielding the highest combined water-energy savings.