Quote:
Originally Posted by dizzybint
Just having a read about Lord Kelvin of Glasgow.. and the invention of the fridge..... something I didnt know.. [url]https://en.wikipedia.org/wiki/Kelvinator[/url maybe I should have said the first name iven to a fridge.as Ive found this too. William Cullen at the University of Glasgow demonstrated the first artificial refrigeration system in the year 1748. However, he never used his discovery for practical purposes. In the year 1805, US inventor Oliver Evans, designed the first refrigeration machine that didn't use liquid and instead used vapor to cool.
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Most if not all refrigeration systems have a loop with both liquid and gas in it, the gas from the evaporator is compressed (increasing pressure and temperature) then passes to a condenser, where it condenses into a liquid and rejects heat to the air around it for a refrigerator, from here it passes through a valve or capillary where it expands and boils in the evaporator, which is where the "cold" comes from (more properly it is boiled by heat absorbed from the air inside the 'fridge).
Like the automobile, the "first practical" application of refrigeration to home use is I guess whichever one of the early units you want to call first over the line from "impractical" to "practical". The Wikipedia article makes a decent argument for calling the Kelvinator this first practical device.
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