What are the functions of each part of the ammonia refrigeration system?

Overview of ammonia refrigeration systems:
 
Refrigeration refers to the mechanical removal of heat from a limited space to reduce the temperature to a desired level, which is accomplished by heat transfer. Refrigeration technology is an extremely complicated and dangerous work, especially ammonia in the system. It is a flammable, explosive, toxic, suffocating gas that has potential for human health and safe production. Larger harm. Therefore, the refrigeration operator must be familiar with the structure, structure, performance, characteristics, sub-cases, process flow, operation principle of the cold storage equipment, master the safety operation technology, and have the ability to check the risk, so that it can be qualified for cooling operation and management. The following is a brief overview of the four major components of the cold storage ammonia refrigeration equipment of the Chaersen Reservoir Authority and its refrigeration working principles.
 
The role of each part of the ammonia refrigeration system:
 
1. Compressor: After consuming a certain amount of external power, the gaseous refrigerant in the evaporator is sucked in, and compressed to the condensing pressure and discharged into the condensation. It changes from a liquid state to a gaseous state; it acts to compress and transport refrigerant vapor; it is a low pressure rise pressure.
 
2. Evaporator: After the refrigerant boils to absorb the heat of the cooled medium, it changes from a liquid state to a gaseous state; it is low temperature and low pressure.
 
3. Expansion valve: The condensed high-pressure liquid refrigerant is throttled, reduced to the pressure required by the evaporator, and sent to the evaporator.
 
4. Condenser: The gaseous refrigerant transfers heat to the cooling medium during condensation and condenses into a liquid.
 

The working principle of ammonia refrigeration system:
 
These devices are connected in turn by pipes to form a closed system. When the system is working, the compressor draws the low-temperature and low-pressure refrigerant vapor generated by the evaporator into the cylinder. When the compressor compresses and the pressure rises to a pressure slightly larger than the pressure in the condenser, the high-pressure refrigeration vapor in the cylinder is discharged to the compressor. In the condenser. The high temperature and high pressure refrigerant vapor in the condensation exchanges heat with the lower temperature air to condense into a liquid refrigerant. At this time, the liquid refrigerant is cooled by the expansion valve and then introduced into the evaporator, and the heat of the cooled object is absorbed in the evaporator. In vaporization. Thus, the object to be cooled is cooled and the refrigerant vapor is sucked away by the compressor, so that one cycle is completed in the refrigeration system by compression, condensation, expansion, and evaporation.