New piston compressors "Octagon". Part 1. Comparison of reciprocating, screw and scroll refrigeration compressors

In the market for small displacement compressors for refrigeration and air conditioning applications, the trend is towards rotary compressors, while in low temperature refrigeration applications reciprocating compressors continue to be preferred. Increasing demands for energy efficiency, ease of use, the use of new environmentally friendly refrigerants intensify competition in this market sector. In this article, using the example of semi-hermetic reciprocating compressors of the new Octagon series, we would like to show how, with the help of simple technical solutions, it is possible to create products that meet the increased requirements of the modern market. First of all, let's consider some fundamental differences between reciprocating compressors and scroll and screw ones.