Edit] Recycling

Old refrigerators have been adapted to create low cost passive solar water heating systems.^[30] Also, many refrigerators have been refurbished for low-income families in eastern Australia via the Phoenix refrigerator program (see energy efficiency)^{[ citation needed ]}

In Mexico the Federal Government has created the program Cambia Tu Viejo Por Uno Nuevo — Change Your Old Refrigerator For A New One. The old refrigerators are recycled to recover their components — refrigerant gas, copper, glass, iron, etc.^[31]

Ice cream maker

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This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (June 2007)

An ice cream maker.

A domestic ice cream maker or ice cream freezer is a machine used to make small quantities of ice cream at home. Ice cream makers may stir the mixture by hand-cranking or with an electric motor, and may chill the ice cream by using a freezing mixture, by pre-cooling the machine in a freezer, or by the machine itself refrigerating the mixture.

An ice cream maker must freeze the mixture, and must simultaneously stir or churn it to prevent the formation of ice crystals and aerate it to produce smooth and creamy ice cream. Most ice creams are ready to eat immediately, but some, especially those containing alcohol, must be chilled further in a freezer to attain a sufficiently firm consistency.

Some machines, such as certain low-priced counter-top models, require that the resulting mixture be frozen an extra four hours or more (or overnight), depending on the recipe, in order for the ice cream to harden to a desired consistency.

Contents [hide] · 1 Manual machines · 2 Electric machines · 3 Vending machines · 4 References · 5 Further reading

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