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100
China
The chinease cut and stored ice for food preservation.Through the years seasoal harvesting of snow and ice was a daily task of most of the ancient cultures such as
the Chinese, Hebrews, Greeks, Romans, and Persians. Ice snow were stored in caves or dugouts that were lined with straw or other insulating materials. Icehouses remained in use
into the 20th century. http://www.aham.org/consumer/ht/action/GetDocumentAction/id/1409 -
Glasglow, Scotland
The first known artificial refrigerator is demonstrated when William Cullen lets ethyl ether boil into a partial vacuum; he does not, however, use the result to any practical purpose. http://www.jameslindlibrary.org/articles/william-cullen-1710-1790/
http://www.fridgefilters.com/fridgepedia-william-cullen.html -
USA
American inventor, Oliver Evans, designs the very first refrigeration machine that uses vapor instead of liquid. Evans never constructs his machine. http://www.britannica.com/biography/Oliver-Evans -
USA
American physician, John Gorrie is granted the first U.S. patent for mechanical refrigeration. http://www.phys.ufl.edu/~ihas/gorrie/fridge.htm -
USA
Domestic mechanical refrigerators become available. Pictured is the Seeger dry-air siphon refrigerator, circa 1900. General Electric unveils a refrigerator invented by a French monk, Abbe Audif. http://www.fridgefilters.com/fridgepedia-brief-history-of-refrigerators.html -
Early 1920's
A number of synthetic refrigerants called halocarbons or CFCs (chlorofluorocarbons) are developed by Frigidaire. There are 200 different models of refrigerator on the market. http://www.keepitcool.com/history_of_the_refrigerator2.htm -
1937
More than 2 million Americans own refrigerators.The "Globe Top" Monitor Top is also invented. http://www.antiqueappliances.com/monitor_top_refrigerators.htm -
Refrigerators are common in the average home
80% of American homes now have refrigerators http://www.gas-fridge.com/files/39420015853e2595704dc7.pdf -
Ice dispencers
Ice dispencers in refrigerators are used in homes all across America. http://www.realestate.com.au/blog/a-household-history-of-the-fridge-2/ -
.5% homes don't have refrigerator
A domestic refrigerator is present in 99.5% of American homes. http://www.statista.com/topics/2182/refrigerators-and-freezers/ -
Disadvantage
Refrigerators use large amount of electricity. Freon, a harmful pollutant gas is used in the refrigerators which causes global warming . http://www.ehow.com/info_8153871_benefits-refrigerator.html -
Advantage
Refrigerators stop the spoilage of food and they also protect them from insects and rodents. http://www.ehow.com/info_8153871_benefits-refrigerator.html -
Advantage
Refrigerators keep the objects cool and protects the food from heat and direct sunlight. http://www.ehow.com/info_8153871_benefits-refrigerator.html -
Advantage
Refrigerators are used to store food for long time and protect the food from microbes. http://www.ehow.com/info_8153871_benefits-refrigerator.html
