In hermetically sealed compressor, the compressor and the motor are enclosed in the welded steel casing and the two are connected by a common shaft. This makes the whole compressor and the motor a single compact and portable unit that can be handled easily.

What are the advantages of hermetically sealed compressor?

Advantages of Hermetically Sealed Compressors

Compact, so requires small space. The lubrication is simple as the motor and compressor operate in a sealed space with the lubricating oil. The power required per tonne of refrigeration is less than that required for open type compressor.

What is the difference between open type and hermetically sealed compressor?

In an open compressor, the motor and the compressor housing are mounted separately. Because the open compressor lacks a seal around it, there is risk of refrigerant leakage. ... A hermetic compressor also houses both the motor and the compressor housing inside a shell.