Refrigerating plants
Refrigerating
plant is an arrangement for eliminating heat. Refrigeration itself
is based on the relationships between pressure and temperature for a
refrigerant.
The
refrigerating machine consists of four main parts: the compressor,
the condenser, the regulator, the evaporator.
The
refrigerant gas is drawn into the compressor at evaporator or
suction pressure. Then it is compressed to the pressure necessary to
liquefy it. After that the refrigerant is discharged at this
pressure into the condenser and in the condenser it is condensed
into liquid form. The liquid is then metered into the low pressure
side of the system through the regulator or expansion valve. Here it
is evaporated in the cooling pipes arid grids and the resultant
vapour is
drawn
again into the compressor.
Since
the refrigerant returns to the compressor in its original
form
the cycle of operations is continuous and unchanged.
