Knowledge

The units with R11 and R123 as refrigerants are negative pressure units, and the compressor inlet is in a vacuum state.

The refrigerant of centrifugal refrigeration unit mainly uses Freon R11, R134A, R123 and so on.

Open structure, the machine is beautiful in appearance, simple in structure, can check the operation of the unit at any time, simple in installation and maintenance.

When the unit is refrigerating, the compressor will suck the low temperature and low pressure refrigerant in the evaporator into the cylinder...

In order to adapt to the load change of the air conditioning system, the outlet water temperature of the unit should be kept constant.

At present, screw chiller has been used more and more widely in the field of refrigeration and air conditioning in China, and its typical cooling capacity range is 700~ 1000KW.

Absorption systems are most suitable for year-round air conditioning areas where air conditioning is needed in summer and heating is needed in winter.

Absorption refrigeration uses naturally occurring water or ammonia as refrigerant, which is harmless to the environment and the atmospheric ozone layer.

The refrigerant vapor enters the condenser, and is condensed into refrigerant liquid by the cooling medium, and then depressurizes to the evaporation pressure through the throttle.

According to the form of compressor, it is divided into piston chiller, screw chiller and centrifugal chiller

Intake and exhaust pressure protection: mainly to prevent the compressor suction pressure is too low and exhaust pressure is too high.

The lithium bromide absorption refrigerating machine can also form a combined unit with the back pressure steam turbine.