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Essential reading:

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... vode furnace lo i te high pressure turbine visokotla na turbina ... thermal / heat energy of the steam ... power plant THE MAIN ELEMENTS include ... – PowerPoint PPT presentation

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Title: Essential reading:


1
Tomislav Skracic, MA Undergraduate English Course
for MARINE ENGINEERS 2nd Semester
  • Essential reading
  • SPINCIC, A., An English Textbook For Marine
    Engineers I., Pomorski fakultet, Rijeka 2008.
  • LUZER, J., SPINCIC, A., Gramaticka vježbenica
    engleskog jezika za pomorce, Pomorski fakultet,
    Rijeka 2003.

2
Steam power plant
  • KEY WORDS
  • steam power plant - parno pogonsko postrojenje
  • watertube boiler - vodocijevni kotao
  • firetube boiler - vatrocijevni kotao
  • drum (n.) - komora, bubanj
  • impart (v.) - prenositi
  • feed heater - grijac napojne vode
  • superheater (n.) - pregrijac pare
  • air ejector - zracni ejektor
  • de-aerator - otplinjac
  • exhaust steam - potrošena para

3
Steam power plant
  • air ejector ejektor zraka
  • booster pump pumpa koja podiže tlak
  • condenser kondenzator
  • condenser pump pumpa kondenzatora
  • de-aerating tank tank za otplinjavanje
  • feed water heater grijac napojne vode
  • furnace ložište
  • high pressure turbine visokotlacna turbina
  • low pressure turbine niskotlacna turbina
  • feed pump napojna pumpa
  • make-up feed tank kompenzacijski tank
  • superheaters pregrijaci pare

4
Steam power plant
  • The steam power plant is an arrangment that
    converts the energy of fuel into mechanical
    energy.
  • BASIC CYCLE Heat generated in the furnace is
    transmitted to the boiler where water is changed
    into steam. The thermal / heat energy of the
    steam is conveyed to the engine which converts it
    into mechanical energy or work... (to be
    continued)

5
(No Transcript)
6
Steam power plant
  • BASIC CYCLE To convert the heat energy of steam
    into mechanical work, the steam is admitted to
    the turbine through the nozzles, where the energy
    is transformed into kinetic energy. The steam
    expands and while it leaves the nozzle its energy
    is converted into useful work at the turbine
    blades.
  • In passing through the turbines, the steam is
    reduced in pressure and temperature. The exhaust
    steam is then condensed into water and returned
    to the boiler for the repetition of the cycle.

7
Elements of the steam power plant
  • THE MAIN ELEMENTS include the furnace, boiler,
    engine and condenser.
  • THE AUXILIARIES include the feed pumps, feed
    heaters, air heaters, superheaters, condensate
    pumps, air ejector, de-aerator...

8
Repair of steam turbine blades
9
Units of energy
  • The mechanical energy is expressed in horse power
    (h.p.) or according to the SI system in kilowatts
    (kW). 1 British horse power0.7457kW
  • To measure the heat energy of steam, the British
    thermal unit (B.t.u.) is used. According to the
    SI system, the unit of thermal energy is joule.
  • 1 B.t.u. kJ (kilojoule)

10
SOME QUESTIONS
  • What is the purpose of a steam power plant?
  • What is steam? What does it act as?
  • What is the job of the engine?
  • What is a boiler? What may it consist of?
  • By what units do we measure heat energy and
    mechanical energy?
  • Where does the conversion of heat energy into
    mechanical energy take place?
  • What happens to steam after having performed
    work?
  • Describe the basic cycle of the steam power
    plant.

11
Various steam power plants
  • In fossil-fueled power plants, steam generator
    refers to a furnace that burns the fossil fuel to
    boil water to generate steam.
  • In the nuclear plant, steam generator refers to a
    specific type of large heat exchanger used in a
    pressurized water reactor (PWR) to thermally
    connect the primary (reactor plant) and secondary
    (steam plant) systems, which generates steam. In
    a nuclear reactor, water is boiled to generate
    steam directly in the reactor itself and there
    are no units called steam generators.
  • In some industrial settings, there can also be
    steam-producing heat exchangers called heat
    recovery steam generators (HRSG) which utilize
    heat from some industrial process.
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