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POWER PLANT OPERATIONS PART 3

Quiz by Zahid Nabi Wasa

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20 questions
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  • Q1
    a closed pressure vessel in which water is boiled and converted into steam under controlled conditions
    Boiler
    30s
  • Q2
    a system that controls the temperature of steam leaving a boiler by using water injection through a control valve
    Desuperheater
    30s
  • Q3
    tubes exposed to the firebox that transfer water from the steam drum to the mud drum
    Downcomers
    30s
  • Q4
    the section of a boiler used to preheat feed water before it enters the main boiler system
    Economizer
    30s
  • Q5
    (1) the lower drum of a boiler that is used as a junction area for boiler tubes. (2) A low place in a boiler where heavy particles in the water will settle out so that they can be blown down
    Mud drum
    30s
  • Q6
    tubes that go into the side or top of the steam drum, allowing heated water and steam to flow up from the mud drum
    Risers
    30s
  • Q7
    the top drum of a boiler where all of the generated steam gathers before entering the separating equipment
    Steam drum
    30s
  • Q8
    steam that has been heated to a very high temperature so that a majority of the moisture content has been removed (also called dry steam)
    Superheated steam
    30s
  • Q9
    a set of tubes, located near the boiler outlet, that increases (superheats) the temperature of the steam
    Superheater
    30s
  • Q10
    In order to contain and redirect heat back into the firebox, a special ______lining (a brick like form of insulation) is used.
    refractory
    30s
  • Q11
    Hot water is less ______than cold water, so it tends to ______.
    dense, rise
    30s
  • Q12
    Boilers are designed in two major types:
    water tube, fire tube
    30s
  • Q13
    The purpose of a boiler is to
    make steam
    30s
  • Q14
    (sight glass) is a tube that indicates the water leve in a boiler.
    Gauge glass
    30s
  • Q15
    At sea level, atmospheric pressure is approximately......
    14.7 psia
    30s

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