refrigeration

CE5

Compression system of refrigeration

refrigeration, process for drawing heat from substances to lower their temperature, often for purposes of preservation. Refrigeration in its modern, portable form also depends on insulating materials that are thin yet effective. Wherever fresh or frozen food must be stored, processed, transported, or sold, refrigeration is indispensable; thus appropriate refrigeration machinery has been developed for trains, ships, factories, and cold-storage plants (used not only for foods but also for fur storage).

See also air conditioning.

Sections in this article:

• Introduction
• Preparation of Frozen Foods
• Mechanical Refrigeration Systems
• Early Methods of Refrigeration
• Bibliography

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2024, Columbia University Press. All rights reserved.

See more Encyclopedia articles on: Technology: Terms and Concepts