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  2. Vortex tube - Wikipedia

    en.wikipedia.org/wiki/Vortex_tube

    The lost energy is delivered to the vortex, which speeds its rotation. In a vortex tube, the cylindrical surrounding wall confines the flow at periphery and thus forces conversion of kinetic into internal energy, which produces hot air at the hot exit. Therefore, the vortex tube is a rotorless turboexpander. [6]

  3. Internally grooved copper tube - Wikipedia

    en.wikipedia.org/wiki/Internally_grooved_copper_tube

    Existing air conditioner coils made of round copper tubes and aluminium fins (CTAF coils) typically are mechanically assembled using tube expansion. [37] [25] The equipment used in manufacturing Microgroove products expands the tubes circumferentially (i.e., the circumference of the tube is increased without changing the length).

  4. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    ACR pipe is manufactured without processing oils that would be incompatible with the oils used to lubricate the compressors in the air conditioning system. Except for this difference between ACR (types A and D) and plumbing (types K, L, M, and DWV) pipes, the type only indicates wall thickness and does not affect the outside diameter of the tube.

  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. Flow conditioning - Wikipedia

    en.wikipedia.org/wiki/Flow_conditioning

    The second and most well known option is the 19-tube tube-bundle flow conditioner. The majority of flow installations in North America contain the tube bundle. With the help of hot wire, pitot tube and laser -based computerized measurement systems which allow detailed measurement of velocity profile and turbulence intensity; we know that the ...

  7. Georges J. Ranque - Wikipedia

    en.wikipedia.org/wiki/Georges_J._Ranque

    While studying the flow of air through the pump, he inserted a cone at one end of a tube in which air was flowing in the form of a vortex, and he noticed what is now called the Ranque effect; namely, that a stream of air could be split into two streams, one of hot air and the other of cold air. In 1931, he filed for a patent on his vortex tube ...