IMPROVEMENTS TO REFRIGERATION SYSTEMS

摘要

The invention describes a method of arranging internal components, their orientation and dimensions within a cascade refrigeration system to increase the system's operating efficiency with respect to energy consumption. The invention also facilitates the early and stable establishment of a multi-stage cascade refrigeration process, and increases its robustness under over-load conditions. The invention also reduces fouling of the heat exchange surfaces and internal functional parts by oil or other contaminants. The invention also provides refrigerants which are of particular benefit when used in the system.