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  2. See if it's an easy fix you can take care of yourself or if you should hire a local refrigerator repair specialist to get the appliance back in working order. Then, follow a few basic tips to ...

  3. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    The first cooling systems for food involved ice. [6] Artificial refrigeration began in the mid-1750s, and developed in the early 1800s. [7] In 1834, the first working vapor-compression refrigeration system, using the same technology seen in air conditioners, was built. [8] The first commercial ice-making machine was invented in 1854. [9]

  4. Thermal expansion valve - Wikipedia

    en.wikipedia.org/wiki/Thermal_expansion_valve

    A thermal expansion valve is a key element to a heat pump; this is the cycle that makes air conditioning, or air cooling, possible. A basic refrigeration cycle consists of four major elements: a compressor, a condenser, a metering device and an evaporator. As a refrigerant passes through a circuit containing these four elements, air ...

  5. Heat pump and refrigeration cycle - Wikipedia

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

    Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [2]

  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.

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