Which type of compressor is widely used for household refrigeration systems?

The most commonly used type of compressor for household refrigeration systems is the reciprocating compressor. This type of compressor works by using a piston that moves up and down within a cylinder, compressing the refrigerant gas. As the piston moves down, it creates a low-pressure area that pulls the refrigerant in. When the piston moves up, it compresses the refrigerant and pushes it out into the condenser.

Reciprocating compressors are favored in household applications due to their reliability, efficiency at the relatively low cooling loads typical of residential refrigerators, and the ability to maintain stable temperatures. Additionally, they can handle small refrigerant charge amounts effectively, which is ideal for the compact designs of household appliances.

Other types of compressors, while used in various applications, are less common in household settings. For example, scroll compressors are often used in some higher-end refrigerators due to their efficiency and quieter operation, and rotary compressors may also be found in certain compact refrigerators, but reciprocating compressors remain the most prevalent due to their simplicity and proven track record in residential applications. Turbo compressors, on the other hand, are generally used in large industrial systems rather than in household refrigeration.