CEM Concepts and Principles 3

Question 1

What is 'life-cycle cost analysis' (LCCA) primarily used for in energy management?

Accepted Answer

Evaluating total cost of ownership including initial, operating, and disposal costs

Answer

LCCA compares the total costs—capital, operating, maintenance, and disposal—of alternative investments over their useful lives to identify the most cost-effective option.

Question 2

The 'rebound effect' in energy efficiency refers to:

Accepted Answer

Increased energy use resulting from cost savings generated by efficiency improvements

Answer

The rebound effect occurs when money saved through efficiency improvements is spent on additional energy-consuming activities, partially offsetting the savings.

Question 3

In energy auditing, what does 'envelope' refer to?

Accepted Answer

The physical boundary between conditioned and unconditioned space

Answer

The building envelope is the shell—walls, roof, windows, and foundation—that separates the interior conditioned space from the outdoor environment.

Question 4

What is the significance of the 'coincident peak demand' for a utility customer?

Accepted Answer

It is the customer's demand at the moment the utility's system peak occurs

Answer

Coincident peak demand is the customer's load at the time the utility's grid-wide peak occurs, often used to allocate transmission and capacity costs.

Question 5

Which of the following is an example of an 'energy conservation measure' (ECM) targeting the building envelope?

Accepted Answer

Adding insulation to the roof to reduce heat gain

Answer

Adding roof insulation directly improves the thermal performance of the building envelope, reducing heat transfer and cooling/heating loads.

(CEM) Certified Emergency Manager Practice Test

(CEM) Certified Emergency Manager Practice Test

CEM Concepts and Principles 3