Coldness is not a steady characteristic and it can’t be produced. On the
contrary it is more likely defined as absence of warmth.
Transformation of warmth into coldness with the help of special plants
comprises the sphere of cooling equipment.
task of cooling equipment is to reduce the temperature of certain room
below free-air temperature, i.e. to deprive cooled place of warmth and
transport it to another one. Chilling operation that is carried out in
cooling equipment implies a long process when the temperature is
constantly maintained on desired level.