45 Questions
Which of the following is true about steam?
Steam is water that has been evaporated by adding heat
Why do Power Engineers produce steam?
To transfer heat energy in industrial processes
What is a characteristic of a good heat transfer fluid?
Transfers a lot of heat with a small mass
Why is water an ideal heat transfer fluid?
It expands to several hundred times its volume when converted to steam
What is the main use of steam in industrial processes?
Transferring heat energy
Which industry sector does NOT use steam as a heat transfer medium?
Vehicle manufacturing
What is the purpose of using steam in the tanning industry?
To control humidity
What happens to steam in a unit heater?
It gives off heat and condenses
What is the temperature of superheated steam?
500°C
What is the purpose of injecting steam below ground in the oil industry?
To heat heavy oil
Which component keeps steam in the heater and allows only condensate to pass through?
Steam trap
What would happen if the heater did not have a steam trap?
The heater would fill up with condensate and not provide heat
Where does the steam vent to if it goes directly to the condensate tank without passing through the heater?
Atmosphere
What happens to the condensate once it is in the condensate tank?
It is pumped back into the boiler
How does the basic system described in the text differ from most process steam systems?
All of the above
Which of the following is NOT a reason why steam is important in industrial processes?
Steam is non-toxic
How does water become steam?
By adding heat
What is the primary duty of Power Engineers in relation to steam?
To control the equipment that produces steam
Why is steam a preferred heat transfer fluid in many industrial processes?
It expands to several hundred times its volume
How does the use of steam in industrial processes differ from its use at home?
Steam is produced in boilers in industry
Which of the following is NOT a use of steam in the industrial sector?
Automotive manufacturing
Which of the following is NOT a characteristic of steam?
Only generated by burning fuel
What happens to the steam in a unit heater?
It condenses and becomes condensate
Why is the condensate reused in the steam cycle?
Because it is pure and still contains heat
What is the purpose of a steam trap in a heater?
To keep steam in the heater and allow only condensate to pass through
What is the purpose of a steam trap in a heater?
To keep steam in the heater and allow only condensate to pass through
What would happen if the steam in the heater did not spend enough time in the heat exchanger to give up heat and condense?
The steam would flow directly to the condensate tank
What is the main purpose of the condensate tank in the steam cycle?
To cool down the condensate before it is pumped back into the boiler
How does the basic system described in the text differ from most process steam systems?
It uses multiple steam-consuming processes operating simultaneously
What does Figure 4 in the text represent?
A boiler in a small power plant
Which of the following is NOT a reason why Power Engineers produce steam?
To convert water into a heat transfer fluid
What is the main advantage of using steam as a heat transfer fluid in industrial processes?
It can transfer a lot of heat with a small mass
What is the unique property of water that makes it ideal for heat transfer applications?
It expands to several hundred times its volume when converted to steam
How does the use of steam in industrial processes differ from its use at home?
Steam is used to transfer heat energy in industrial processes
What is the volume ratio of steam to water at 100 degrees Celsius?
1600:1
Which industry sector does NOT use steam as a heat transfer medium?
Mining and metal refining
What is the purpose of injecting steam below ground in the oil industry?
To heat heavy oil
What is the main purpose of the condensate tank in the steam cycle?
To store and reuse pure condensate
Why is water an ideal heat transfer fluid?
Because it has a high specific heat capacity
What is the primary duty of Power Engineers in relation to steam?
To ensure safe and efficient operation of steam systems
Which component of the steam system prevents steam from flowing unimpeded through the heater?
Steam trap
What would happen if the heater did not have a steam trap?
Steam would flow through the heater unimpeded
What is the purpose of the condensate tank in the steam cycle?
To separate condensate from steam
What would happen if the steam in the heater did not spend enough time in the heat exchanger to give up heat and condense?
Steam would vent to atmosphere wasting heat, water, and chemicals
What is the main difference between the basic system described in the text and most process steam systems?
All of the above
Test your knowledge on steam, its uses, and the basic steam cycle in power engineering. Learn why steam is important and how power engineers control the equipment that produces and consumes it.
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