Principles of Refrigeration is a 1944 animated presentation about the process of refrigeration. Through the miracle of animation, you will get an inside look at all the processes that occur to cool things down. The concepts are presented in a logical and easy to understand manner, building from the simple to the more complex to ensure that all who watch the presentation will understand how refrigeration works.

This DVD has a runtime of approximately 20 minutes.

Here are some sample images from the DVD