CMM Energy Management & Sustainability 3

Question 1

Under ASHRAE Standard 90.1, what does the standard primarily govern?

Accepted Answer

Energy efficiency requirements for commercial buildings

Answer

ASHRAE Standard 90.1 sets minimum energy efficiency requirements for commercial buildings, covering building envelope, HVAC, service water heating, power, and lighting.

Question 2

What is 'submetering' in a multi-tenant building context?

Accepted Answer

Installing individual utility meters for each tenant to track their specific energy or water consumption

Answer

Submetering installs individual meters for each tenant space, enabling accurate billing based on actual consumption and motivating tenants to reduce their own energy use.

Question 3

Which building envelope component has the greatest impact on reducing heating and cooling loads in most U.S. climates?

Accepted Answer

Roof and ceiling insulation

Answer

Roof and ceiling insulation reduces the largest surface area of heat transfer between conditioned and unconditioned space, making it typically the highest-impact envelope improvement.

Question 4

A carbon footprint assessment for a building typically measures emissions in units of:

Accepted Answer

Metric tons of CO2 equivalent (MT CO2e)

Answer

Carbon footprint is measured in metric tons of CO2 equivalent (MT CO2e), which normalizes all greenhouse gases to their global warming potential relative to CO2.

Question 5

What is the primary function of an economizer cycle in an HVAC system?

Accepted Answer

To use outside air for free cooling when outdoor conditions are favorable, reducing mechanical cooling energy

Answer

An economizer uses outdoor air directly for cooling when the outside temperature and humidity are suitable, bypassing mechanical refrigeration and saving significant energy.

CMM - Certified Building Maintenance Manager Practice Test

CMM - Certified Building Maintenance Manager Practice Test

CMM Energy Management & Sustainability 3