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  2. Auto-defrost - Wikipedia

    en.wikipedia.org/wiki/Auto-defrost

    In newer designs, the timer only runs while the compressor runs, so the longer the refrigerator door is closed, the less time the heater will run for and the more energy is saved. A defrost thermostat opens the heater circuit when the evaporator temperature rises above a preset temperature, 40°F (5°C) or more, thereby preventing excessive ...

  3. 14 Hacks to Make Your Appliances Last Longer - AOL

    www.aol.com/finance/14-hacks-appliances-last...

    Once that’s broken down, the fridge isn’t going to be able to cool as well as it did. The same goes for other appliances like ovens and dishwashers. Slamming anything can lead to damage.

  4. Vapor-compression refrigeration - Wikipedia

    en.wikipedia.org/wiki/Vapor-compression...

    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.

  5. Heat pump and refrigeration cycle - Wikipedia

    en.wikipedia.org/wiki/Heat_pump_and...

    When a Carnot cycle runs in reverse, it is called a reverse Carnot cycle. A refrigerator or heat pump that acts according to the reversed Carnot cycle is called a Carnot refrigerator or Carnot heat pump, respectively. In the first stage of this cycle, the refrigerant absorbs heat isothermally from a low-temperature source, T L, in the amount Q L.

  6. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    In the cooling step on the inside of the refrigerator, the g state particle absorbs energy from ambient particles, cooling them, and itself jumping to the e state. In the second step, on the outside of the refrigerator where the particles are also at an e state, the particle falls to the g state, releasing energy and heating the outside particles.

  7. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    The refrigerator replaced the icebox, which had been a common household appliance for almost a century and a half. The United States Food and Drug Administration recommends that the refrigerator be kept at or below 4 °C (40 °F) and that the freezer be regulated at −18 °C (0 °F). [5] The first cooling systems for food involved ice. [6]

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