Shini SIC-A-R2, Руководство по эксплуатации

Страница: 19 / 49

19(49)
2. Structural Features and Working Principle
2.1 Main Functions
SIC-R2 water chiller is mainly made up of four components. They are
compressor, condenser, thermostate expansion valve and evaporator. The
machine uses single stage vapor compression refrigeration system and takes
the advantage of the mechanism of transformation between gas and liquid for
absorbing and releasing heat by using of refrigerant to achieve the
effectiveness of refrigeration.
2.1.1 Working Principle
A. Water-cooled Series
Picture 2-1: Working Principle
When the SIC-W water-cooled water chiller starting up, compressor starts
working. Refrigerant is compressed into high temperature and high pressure
gas in the process from B to C, and then be cooled when passing through the
condenser and changed into liquid. Heat is taken away by the cooling water. In
the process from C to D to E and F, the liquid refrigerant is dried and filtered by
drier filter. After that, it will pass through solenoid valve, refrigerant indicator and
then reach expansion valve. In the process from F to G, the high pressure liquid
refrigerant will be throttled and depressurized by heat expansion valve and
temperature will go down. In the process from G to A, chilled water absorbs the
heat of process water in the evaporator and returns back to compressor. This
heat exchange process repeats until process water is cooled down to required
temperature.