Fluids which are used for refrigeration are called refrigerants. They have a
relatively low boiling point; so low, that the warmth of foods in the
refrigeration appliance can cause them to boil or vaporise.
Sealed circulation system, in which the is found. The refrigerant circuit
consists for the most part of an evaporator, a compressor, a condenser and
The refrigerant is evaporated in the evaporator. Like all fluids, refrigerants
require warmth in order to be evaporated. Like all fluids, refrigerants require
warmth in order to be evaporated. This is why the evaporator is located inside
the freezer or directly behind the interior walls and as a result is not visible.
The compressor looks like a small bin. It is powered by a built-in electric
motor. It is the task of the compressor to withdraw vaporous refrigerant
from the evaporator, to compress it and feed it to the condenser.
The refrigerant which has been compressed by the compressor, is liquefied
in the condenser. Thus warmth is released, which is given off into the
surrounding air at the surface of the condenser. The condenser is therefore
attached to the outside of the appliance or directly behind the exterior
sides and is thus not visible.