Energy and Utilities Energy Efficiency and Conservation 2

Question 1

What is 'combined heat and power' (CHP) or cogeneration?

Accepted Answer

Simultaneously generating electricity and capturing waste heat for useful purposes at one facility

Answer

CHP systems capture heat that would otherwise be wasted in electricity generation, using it for space heating or industrial processes, achieving overall efficiencies of 70–80%.

Question 2

What does 'EER' (Energy Efficiency Ratio) measure for air conditioning units?

Accepted Answer

Cooling output in BTU/h divided by power input in watts at a standard test condition

Answer

EER measures an air conditioner's cooling efficiency as the ratio of cooling output to electricity input at a specific test condition (95°F outdoor temperature).

Question 3

What is 'time-of-use' (TOU) electricity pricing?

Accepted Answer

Rate structure with higher prices during peak demand hours and lower prices during off-peak hours

Answer

TOU pricing reflects the actual cost of electricity at different times, incentivizing customers to shift discretionary loads to cheaper off-peak periods.

Question 4

What is 'commissioning' in the context of a new commercial building?

Accepted Answer

Verifying and documenting that building systems are installed and performing as designed

Answer

Building commissioning is a quality assurance process that verifies all energy systems (HVAC, lighting, controls) function correctly together as designed.

Question 5

What does 'LEED certification' indicate for a building?

Accepted Answer

The building has achieved a green building rating for sustainability and energy performance

Answer

LEED (Leadership in Energy and Environmental Design) is the most widely used green building rating system, recognizing buildings that meet standards for energy, water, and environmental performance.

Energy and Utilities Practice Test

Energy and Utilities Practice Test

Energy and Utilities Energy Efficiency and Conservation 2