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A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.
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]
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A low refrigerant charge condition is often accompanied when the compressor is operational by a loud whooshing sound heard from the thermal expansion valve and the evaporator, which is caused by the lack of a liquid head right before the valve's moving orifice, resulting in the orifice trying to meter a vapor or a vapor/liquid mixture instead ...
The lowest temperatures, used for the most powerful superconducting magnets, are reached using liquid helium. Liquid hydrogen at -250 to -265 °C can also be used as a coolant. Liquid hydrogen is also used both as a fuel and as a coolant to cool nozzles and combustion chambers of rocket engines.
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The refrigerator should be at 40°F (4.4°C) or below and the freezer at 0°F (-17.7°C) or below. [27] For example, liquid foods like soup kept in a hot slow cooker (149°F or 65°C) may last only a few hours before contamination [citation needed], but fresh meats like beef and lamb that are promptly frozen (-2°C) can last up to a year. The ...
James Warren Jones (May 13, 1931 – November 18, 1978) was an American cult leader and mass murderer who founded and led the Peoples Temple between 1955 and 1978. In what Jones termed "revolutionary suicide", Jones and the members of his inner circle planned and orchestrated a mass murder-suicide in his remote jungle commune at Jonestown, Guyana, on November 18, 1978.