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Incredible refrigeration circuit made in less than an hour by Mr. LUCAS. A few pieces of copper tubing, a compressor and that's it. This little experiment illustrates the operation of almost all refrigeration units ranging from simple refrigerators to the most complex industrial cooling units. Let's remember that it is forbidden for anyone who does not have the fluid certificate to make or work on a refrigeration circuit containing refrigerants. These fluids present dangers for the environment. You can find this video and many others on http://www.techno-froid.com Filmed at the Fontaine des eaux high school - DINAN - BRETAGNE - for BAC PRO TFCA