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Deep or Big Freeze, a purported cooling effect of the expanding universe; Deep Freeze Range, a mountain range in Antarctica; Deep freezer, a stand-alone freezer unit for preserving food; Operation Deep Freeze, a series of American expeditions to Antarctica beginning in 1955; Deep Freeze, a kernel-level software utility by Faronics
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]
An ultra low temperature (ULT) freezer is a refrigerator that stores contents at −80 to −86 °C (−112 to −123 °F). [1] An ultra low temperature freezer is commonly referred to as a "minus 80 freezer" or a "negative 80 freezer", referring to the most common temperature standard. [2] ULT freezers come in upright and chest freezer formats.
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Ice harvesting in Massachusetts, 1852, showing the railroad line in the background, used to transport the ice. Before 1830, few Americans used ice to refrigerate foods due to a lack of ice-storehouses and iceboxes. As these two things became more widely available, individuals used axes and saws to harvest ice for their storehouses. This method ...
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The defrost system in freezers helps the equipment to perform properly, without thick layers of ice developing, thus preventing the evaporator coil from absorbing heat and cooling the cabinet. Ideally, most frozen foods should be defrosted in a refrigerator to avoid significant growth of pathogens. However, this can require considerable time.
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