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2. Einstein refrigerator - Wikipedia

   en.wikipedia.org/wiki/Einstein_refrigerator

   The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate. It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd , who patented it in the U.S. on November 11, 1930 ( U.S. patent 1,781,541 ).

3. Pot-in-pot refrigerator - Wikipedia

   en.wikipedia.org/wiki/Pot-in-pot_refrigerator

   A pot-in-pot refrigerator, clay pot cooler [1] or zeer (Arabic: زير) is an evaporative cooling refrigeration device which does not use electricity. It uses a porous outer clay pot (lined with wet sand) containing an inner pot (which can be glazed to prevent penetration by the liquid) within which the food is placed.

4. Refrigerator - Wikipedia

   en.wikipedia.org/wiki/Refrigerator

   Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]

5. Igloo Products - Wikipedia

   en.wikipedia.org/wiki/Igloo_Products

   The company was founded in 1947 in Katy and is known for its blue and white coolers. [citation needed] Igloo's product line includes a wide range of coolers and ice chests for various uses, from small personal coolers to large commercial coolers, as well as beverage dispensers, marine coolers, and accessories.

6. Icebox - Wikipedia

   en.wikipedia.org/wiki/Icebox

   Icebox used in cafés of Paris in the late 1800s. An icebox (also called a cold closet) is a compact non-mechanical refrigerator which was a common early-twentieth-century kitchen appliance before the development of safely powered refrigeration devices.

7. Refrigeration - Wikipedia

   en.wikipedia.org/wiki/Refrigeration

   This effect is commonly used in camping and portable coolers and for cooling electronic components [78] and small instruments. Peltier coolers are often used where a traditional vapor-compression cycle refrigerator would be impractical or take up too much space, and in cooled image sensors as an easy, compact and lightweight, if inefficient ...