Analysis of the advantages and disadvantages of screw chillers and piston chillers

Analysis of the advantages and disadvantages of screw chillers and piston chillers

According to different compressors, chillers are divided into screw chillers, piston chillers, and scroll chillers. Various compressors have their own advantages and disadvantages. The following okmarts.com editor will introduce you to screw chillers. The advantages and disadvantages of the unit and the piston chiller.

　　 Screw chiller is the most frequently used product type among chillers so far. The refrigerant from the evaporator of the screw chiller is a gaseous refrigerant. After adiabatic compression by the compressor, it becomes a high temperature and high pressure state. The compressed gas refrigerant is cooled and condensed at equal pressure in the condenser. After condensation, it changes into a liquid refrigerant, and then expands to a low pressure through a throttle valve to become a gas-liquid mixture. The liquid refrigerant under low temperature and low pressure absorbs the heat of the substance to be cooled in the evaporator and becomes a gaseous refrigerant again. The gaseous refrigerant re-enters the compressor through the pipeline to start a new cycle. These are the four processes of the refrigeration cycle and the main working principle of the screw chiller

. As the main moving parts of the screw chiller are very few, even in the long-term use process, there will be fewer failures, so it has become the main popular domestic chiller production technology and is highly recognized by many consumers. The unit has a long life and has become the most sold chiller product in China.

　　Advantages: The screw chiller has a relatively high compression and a very small volume, which can meet different use environments. At the same time, it uses high-quality imported compressors to complete the entire production process, which greatly improves the product life of the screw chiller.

　　 Disadvantages: The price is higher than the piston type chiller, and the capacity of a single unit is smaller, which requires a higher level of overall production technology, leading to higher production costs.

Piston-type chillers use piston compressors as the main operating mode, so they have the advantage of lower production prices. Because the production materials used in piston-type chillers are very simple, and the processing process requires low technical requirements, it has become The production mode commonly used by domestic chiller factories achieves the goal of reducing overall production costs.

Advantages: low price, simple daily maintenance, no need to have any exhaust equipment, greatly reducing the overall production cost, helping the chiller factory to quickly occupy the domestic chiller sales market, and the overall operation stability is relatively good high.

Disadvantages: Although the piston-type chiller can also meet the needs of daily use, in actual use, the piston-type chiller has more spare parts, and the probability of failure is higher, and the sales price is low, but the later maintenance costs are higher. Therefore, the sales of piston chillers are affected.