Ask the Chatbot Games & Quizzes ProCon History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture Money Videos
refrigeration
Discover
The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)
New Seven Wonders of the World
Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society
12 Novels Considered the “Greatest Book Ever Written”
Artist interpretation of a Space meteoroid impact. Meteor impact. Asteroid, End of the world, danger, destruction, dinosaur extinct, Judgement Day, Planet Earth, Doomsday Predictions, comet
10 Failed Doomsday Predictions
Santa Claus flying in his sleigh, christmas, reindeer
Was Santa Claus a Real Person?
Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society
The 10 Greatest Basketball Players of All Time
Black widow spider
9 of the World’s Deadliest Spiders
Thumbnail for flags that look alike quiz Russia, Slovenia, Iceland, Norway
Flags That Look Alike
refrigeration Article

refrigeration summary

verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Share
Share to social media
URL
https://www.britannica.com/summary/refrigeration
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites
Written and fact-checked by
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
The Editors of Encyclopaedia Britannica
Below is the article summary. For the full article, see refrigeration.
Components of a refrigerator. A compressor pressurizes the refrigerant gas, heating it and forcing it through the system. The gas cools and liquefies in the condenser, giving up its heat to the outside air. The liquid's pressure is lowered when it passes through an expansion valve, and there is an associated further drop in temperature. The cold liquid then passes into the evaporator coils, where heat drawn from the warmer refrigerator compartment causes it to vaporize. The gas is then returned to the compressor to repeat the cycle.
Components of a refrigerator. A compressor pressurizes the refrigerant gas, heating it and forcing it through the system. The gas cools and liquefies in the condenser, giving up its heat to the outside air. The liquid's pressure is lowered when it passes through an expansion valve, and there is an associated further drop in temperature. The cold liquid then passes into the evaporator coils, where heat drawn from the warmer refrigerator compartment causes it to vaporize. The gas is then returned to the compressor to repeat the cycle.

refrigeration, Process of removing heat from an enclosed space or from a substance in order to lower the temperature. In industrialized nations and prosperous regions in the developing world, refrigeration is used chiefly to store foodstuffs at low temperatures, thus inhibiting the destructive action of bacteria, yeasts, and molds. Many perishable products can be frozen, permitting them to be kept for months and even years with little loss in nutrition or flavour or change in appearance. See also air-conditioning; cooling system; heat exchanger.