The application scenarios of refrigeration compressors are wide, and the refrigeration requirements and working conditions vary greatly in different scenarios. It is necessary to choose the appropriate compressor type and model based on the characteristics of the scenario to ensure the efficient and stable operation of the refrigeration system. The following are several adaptation solutions for mainstream application scenarios.
Household refrigeration scenarios (refrigerators, household air conditioners): The demand characteristics are small refrigeration capacity, low operating noise, high energy efficiency, small size, controllable cost, and suitable for small displacement compressors. Refrigerators often use rolling rotor compressors, which are small in size, light in weight, and operate smoothly. They are suitable for cooling needs between -18 ℃ and 5 ℃, and their energy efficiency level needs to reach the national standard level 2 or above; Household air conditioners (wall mounted and cabinet mounted) often use scroll compressors, which have low noise, high volumetric efficiency, and high energy efficiency. They are suitable for the cooling/heating needs of different room areas. Variable frequency scroll compressors can adjust the speed according to the load, making them more energy-efficient.
Commercial refrigeration scenarios (supermarket cold chain, convenience store freezer, commercial air conditioning): The demand characteristics are large refrigeration capacity, long operating time, and large fluctuations in working conditions, suitable for medium and large capacity compressors. Supermarket cold chain (refrigerators, freezers) can choose screw or scroll compressors according to the refrigeration capacity. Screw compressors are suitable for large freezers (refrigeration capacity ≥ 100kW), while scroll compressors are suitable for small and medium-sized refrigerators; Commercial air conditioners (central air conditioning, multi split) often use screw and centrifugal compressors. Screw compressors are suitable for medium-sized buildings (office buildings, shopping malls), while centrifugal compressors are suitable for large buildings (exhibition centers, airports), which can achieve centralized cooling in multiple areas.
Industrial refrigeration scenarios (industrial refrigeration, chemical refrigeration, precision manufacturing cooling): The demand characteristics are large refrigeration capacity, harsh working conditions (low temperature, high pressure), high operational stability requirements, and compatibility with screw, centrifugal, or piston compressors. Industrial freezing (such as food freezing and pharmaceutical freezing) often uses screw compressors, which can achieve low-temperature refrigeration below -40 ℃, with stable operation and resistance to load fluctuations; Chemical refrigeration needs to be adapted to corrosive working conditions, and piston or screw compressors made of corrosion-resistant materials should be selected to ensure good sealing performance; Precision manufacturing cooling (such as electronic components and machine tool cooling) requires the use of high-precision, low vibration vortex or small screw compressors to control temperature fluctuations within ± 1 ℃.
Special scenarios (cold chain logistics, low-temperature laboratories, ship refrigeration): Cold chain logistics (refrigerated trucks, containers) need to be adapted to mobile working conditions, using seismic and anti bounce semi enclosed piston or screw compressors with good sealing performance and the ability to adapt to extreme temperatures; The low-temperature laboratory needs to achieve ultra-low temperature refrigeration (below -80 ℃), using screw parallel units or piston cascade units to ensure precise temperature control; Ship refrigeration needs to be adapted to marine environments (high humidity, high salt spray), and anti-corrosion and moisture-proof fully enclosed or semi enclosed compressors should be selected to optimize the cooling system to adapt to marine conditions.
