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  2. Absorption refrigerator - Wikipedia

    en.wikipedia.org/wiki/Absorption_refrigerator

    Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).

  3. Thermal expansion valve - Wikipedia

    en.wikipedia.org/wiki/Thermal_expansion_valve

    A thermal expansion valve or thermostatic expansion valve (often abbreviated as TEV, TXV, or TX valve) is a component in vapor-compression refrigeration and air conditioning systems that controls the amount of refrigerant released into the evaporator and is intended to regulate the superheat of the refrigerant that flows out of the evaporator ...

  4. Heat pump and refrigeration cycle - Wikipedia

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

    Vapor-compression refrigeration [6] For comparison, a simple stylized diagram of a heat pump's vapor-compression refrigeration cycle: 1) condenser, 2) expansion valve, 3) evaporator, 4) compressor (Note that this diagram is flipped vertically and horizontally compared to the previous one) [7] Temperature–entropy diagram of the vapor-compression cycle.

  5. 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.

  6. Absorption-compression heat pump - Wikipedia

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

    The absorption cycle is the one limiting the choice of the refrigerant. The most common refrigerants for absorption systems are ammonia and water. [13] Both are good for combined absorption-compression heat pumps. [14] [15] Ammonia has an exceptionally good solubility in water. This is an important aspect that increases the performance and ...

  7. 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]

  8. Valve malfunction cause of ammonia leak at Weis plant - AOL

    www.aol.com/valve-malfunction-cause-ammonia-leak...

    Oct. 5—SUNBURY — A malfunctioning valve caused an ammonia leak Saturday night at the Weis Markets ice cream and dairy plant in the city. Company spokesman Dennis Curtin said the part of the ...

  9. Absorption heat pump - Wikipedia

    en.wikipedia.org/wiki/Absorption_heat_pump

    In the evaporator and condenser, the phase change of pure ammonia is used to complete the external absorption or heat release. [4] Like a traditional heat pump, the refrigerant (ammonia) is condensed in the condenser, and heat is then released; the pressure is dropped after the expansion unit and the refrigerant is evaporated to absorb heat.

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