Tag Archives: Frigidare

Ever wondered how your refrigerator works?

Fridge

Before refrigerators as we know them were invented they used to be a box that was topped up with ice regularly in order to keep food cool. At the beginning of the 20th century Frigidare launched their first electronic fridge for households. They had sold 200,000 models by 1926 and had to build a new factory in order for them to keep up with demand!

The bare bones of what a refrigerator does is push hot air outside the unit in order to keep the contents cool. The most common way of doing this is by tubes that are filled which a chemical liquid (refrigerant) which boils when the air pressure is reduced. Once it has boiled it turns into a vapour which then absorbs energy. This is the process that transfers energy from the inside of the fridge to the outside, therefore keeping the contents cold. Continue reading