Practice Test Geeks(EMP) Energy Management Professional Practice Test
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EMP Building Systems & HVAC Optimization Flashcards

6 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 6 EMP Building Systems & HVAC Optimization flashcards as text

  1. What is 'thermal mass' in building energy management?

    Answer: A building material's ability to absorb, store, and release heat energy

    Thermal mass materials (concrete, masonry) store solar and internal heat gains during the day and release them slowly, reducing peak HVAC loads and shifting energy demand.

  2. In building energy analysis, what does a 'degree day' represent?

    Answer: A measure of how much and for how long outdoor temperature deviates from a base temperature

    Heating or cooling degree days quantify the cumulative temperature deviation from a base (typically 65°F), serving as a proxy for building heating or cooling energy demand.

  3. What is the purpose of an Air Handling Unit (AHU) in a commercial building HVAC system?

    Answer: To condition and distribute air throughout the building by heating, cooling, and filtering

    An AHU conditions supply air by heating, cooling, humidifying, dehumidifying, and filtering it before distributing it to occupied zones through ductwork.

  4. Which insulation property determines how well a material resists heat flow, commonly used to rate wall and attic insulation in the US?

    Answer: R-value

    R-value measures thermal resistance per unit area; higher R-values indicate better insulating performance and are used in US building codes and energy standards.

  5. What is 'demand-controlled ventilation' (DCV) and why does it save energy?

    Answer: A system using CO₂ sensors to modulate outdoor air intake based on actual occupancy

    DCV uses CO₂ sensors as a proxy for occupancy, reducing outdoor air ventilation when spaces are less occupied and avoiding energy waste conditioning unnecessary outside air.

  6. ASHRAE Standard 90.1 is primarily used as:

    Answer: The energy efficiency standard for commercial buildings adopted by most US building codes

    ASHRAE 90.1 establishes minimum energy performance requirements for commercial buildings and is referenced in the International Energy Conservation Code (IECC) and state energy codes.