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Additional
refrigerant
English Wikipedia - The Free Encyclopedia
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Refrigerant
A
refrigerant
is a substance or mixture, usually a
fluid
, used in a
heat pump and refrigeration cycle
. In most cycles it undergoes
phase transitions
from a
liquid
to a
gas
and back again. Many
working fluids
have been used for such purposes.
Fluorocarbons
, especially
chlorofluorocarbons
, became commonplace in the 20th century, but they are being phased out because of their
ozone depletion
effects. Other common refrigerants used in various applications are
ammonia
,
sulfur dioxide
, and non-halogenated
hydrocarbons
such as
propane
.
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