Steam and Its Role in Industries

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Questions and Answers

Which of the following is the main reason why Power Engineers produce steam?

  • To transfer heat energy to machinery (correct)
  • To convert heat energy to electrical energy
  • To convert electrical energy to mechanical energy
  • To transfer electrical energy to machinery

What is one advantage of using water as a heat transfer fluid?

  • It expands to several hundred times its volume when converted to steam
  • It can transfer a lot of heat with a small mass (correct)
  • It is a good conductor of electricity
  • It is non-toxic

Why is steam considered a good heat transfer fluid?

  • It is toxic
  • It can perform a tremendous amount of work while expanding (correct)
  • It has a low boiling point
  • It is a poor conductor of heat

Which of the following best describes what happens to the steam in the heat exchanger?

<p>The steam flows directly to the condensate tank without giving up heat. (B)</p> Signup and view all the answers

What would be the consequence of the steam venting to atmosphere in the condensate tank?

<p>Wasting heat, water, and chemicals. (C)</p> Signup and view all the answers

How does the basic system shown in Figure 3 differ from most process steam systems?

<p>It has multiple steam-consuming processes operating simultaneously. (D)</p> Signup and view all the answers

Which industry sector does NOT use steam as a heat transfer medium?

<p>Mining and metal refining (B)</p> Signup and view all the answers

What is the purpose of adding additional heat energy to the steam produced by boilers?

<p>To increase the pressure of the steam (C)</p> Signup and view all the answers

What happens to the steam in a unit heater?

<p>It condenses into water (A)</p> Signup and view all the answers

What is the purpose of a steam trap in a unit heater?

<p>To keep steam in the heater and allow only condensate to pass through (A)</p> Signup and view all the answers

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