Cascade Refrigeration System

[US Iceman]

Most of the web resources you will find are from specialty manufacturers for this type of equipment. Mostly small systems and storage requirements for medical or product testing. The refrigeration design is guarded as a closely held secret, in my experience.

You will find general specifications and performance data, but not refrigeration system details.

Larger systems for oxygen, or other gas separation (air plants, or gas processing) are custom engineered. Usually by the larger industrial refrigeration manufacturers.

This is not an area for casual experimentation, unless you are looking for upset customers.

You may find some casual references in some of the better refrigeration books, but in-depth design knowledge is not commonly documented for the general public.

The last one of these I worked on (about 10 years ago) required 50 Tons of cooling. System cost was about $2.5 million US at that time. You cannot afford to guess too many times when the system costs are this expensive.

Regards,
US Iceman

[Kompulsa]

This might be helpful: http://www.engr.sjsu.edu/ndejong/Multi-Pressure%20Refrigeration%20Systems.pdf