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  2. Absorption-compression heat pump - Wikipedia

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

    An absorption-compression heat pump (ACHP) is a device that integrate an electric compressor in an absorption heat pump. In some cases this is obtained by combining a vapor-compression heat pump and an absorption heat pump. It is also referred to as a hybrid heat pump [1] which is however a broader field.

  3. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    Propane may be the most suitable for high temperature heat pumps. [73] Ammonia (R717) and carbon dioxide also have a low GWP. As of 2023 smaller CO 2 heat pumps are not widely available and research and development of them continues. [74] A 2024 report said that refrigerants with GWP are vulnerable to further international restrictions. [75]

  4. Absorption heat pump - Wikipedia

    en.wikipedia.org/wiki/Absorption_heat_pump

    For low-temperature heat sources of 15–25 °C, driven by a small amount of high-temperature heat sources (such as high-temperature steam or direct combustion), cold water at a temperature of 7–15 °C and hot water at a temperature above 47 °C can be prepared. 1.2, >1.5 when heating. [4]

  5. Heat pump and refrigeration cycle - Wikipedia

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

    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] Thus a heat pump may be thought of as a "heater" if the objective is to warm the heat sink (as when warming the inside of a home on a cold day), or a ...

  6. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    Propane may be the most suitable for high temperature heat pumps. [53] Ammonia (R717) and carbon dioxide also have a low GWP. As of 2023 smaller CO 2 heat pumps are not widely available and research and development of them continues. [54] A 2024 report said that refrigerants with GWP are vulnerable to further international restrictions. [55]

  7. Coefficient of performance - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_performance

    The heat pump itself can be improved by increasing the size of the internal heat exchangers, which in turn increases the efficiency (and the cost) relative to the power of the compressor, and also by reducing the system's internal temperature gap over the compressor. Obviously, this latter measure makes some heat pumps unsuitable to produce ...

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