Which type of compressor is most commonly found in small refrigeration systems?

The hermetic compressor is the most commonly found type in small refrigeration systems primarily due to its design and efficiency. Hermetic compressors are sealed units where the motor and compressor are housed together in a single casing, preventing the entry of contaminants from the outside environment. This sealing not only enhances reliability but also improves the efficient operation of the refrigeration system by ensuring that refrigerant leaks are minimized.

In small refrigeration applications, such as domestic refrigerators and small air conditioning units, the hermetic compressor is favored because it typically requires less maintenance and can operate quietly. It also tends to have a compact design, making it suitable for use in tight spaces. These characteristics align well with the needs of smaller systems that prioritize efficiency and reliability while minimizing costs and maintenance requirements.

Other types of compressors, such as scroll and open compressors, might be used for specific applications. However, they do not typically match the hermetic compressor's prevalence in small, domestic refrigeration systems. For instance, scroll compressors are becoming more popular, but they are often found in larger systems. Open compressors are mostly used in industrial applications due to their higher power capabilities and serviceability, while screw compressors are generally reserved for large-scale industrial refrigeration systems, making the hermetic compressor the clear choice in the context of