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A
boiler
is a device used to
heat
water
or other
fluids
until it
boils
or before
boiling point
.
[1]
The heated or
vaporized
fluid is then used for various process applications, such as
central heating
,
power generation
,
cooking
, and
sanitation
.
Hot water boilers heat water for the purpose of domestic or commercial heating and hot water supply.
Steam boilers generate steam in order to power turbines for power generation and various other industrial heating applications.
The source of the heat for boiler can be from
coal
,
oil
,
wood
,
rejected heat
or
natural gas
.
The different types of boilers find their use in different applications.
[2]
Where steam is required for space heating, the boiler is often called a
steam generator
. A niche application was for heating
railroad
passenger cars
while
steam locomotives
were being phased out. The steam generator would be oil-fired on
diesel locomotives
or electrically heated on
electric locomotives
. Steam heating is now uncommon on trains. Modern trains are usually heated by electric heaters.
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