Certified Energy Auditor Certification Certified Energy Auditor Steam Systems and Process Energy Questions and Answers

Question 1

What is the approximate latent heat of vaporization of steam at 212°F (100°C) at atmospheric pressure?

Accepted Answer

970 BTU/lb

Answer

The latent heat of vaporization of steam at 212°F and atmospheric pressure is approximately 970 BTU/lb.

Question 2

Which type of steam trap is best suited for high-pressure applications and provides continuous condensate drainage?

Accepted Answer

Thermodynamic (disc) trap

Answer

Thermodynamic (disc) traps are compact, durable, and well-suited for high-pressure steam applications with continuous condensate removal.

Question 3

In a steam distribution system, what percentage of energy input is typically lost through failed-open steam traps?

Accepted Answer

15–25%

Answer

A failed-open steam trap can waste 15–25% of a facility's total steam output, making trap surveys a high-priority audit task.

Question 4

What does a steam flash tank recover in a condensate return system?

Accepted Answer

Low-pressure flash steam from high-pressure condensate

Answer

A flash tank captures low-pressure steam produced when high-pressure condensate drops in pressure, which can then be reused for low-pressure processes.

Question 5

Which metric is commonly used to express boiler efficiency as measured by the flue gas method?

Accepted Answer

Combustion efficiency (stack loss method)

Answer

Combustion efficiency using the stack loss method measures boiler efficiency by analyzing flue gas temperature and oxygen/CO2 content.

Certified Energy Auditor Certification Practice Test

Certified Energy Auditor Certification Practice Test

Certified Energy Auditor Certification Certified Energy Auditor Steam Systems and Process Energy Questions and Answers