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  2. Slip ratio (gas–liquid flow) - Wikipedia

    en.wikipedia.org/wiki/Slip_ratio_(gas–liquid_flow)

    Slip ratio (or velocity ratio) in gas–liquid (two-phase) flow, is defined as the ratio of the velocity of the gas phase to the velocity of the liquid phase. [ 1 ] In the homogeneous model of two-phase flow , the slip ratio is by definition assumed to be unity (no slip).

  3. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    An air-to-water system only pumps heat inwards, and can provide space heating and hot water. [9] For simplicity, the description below focuses on use for interior heating. The technology is similar to a refrigerator or freezer or air conditioning unit: the different effect is due to the location of the different system components.

  4. Trace heating - Wikipedia

    en.wikipedia.org/wiki/Trace_heating

    Hot water service piping can also be traced, so that a circulating system is not needed to provide hot water at outlets. The combination of trace heating and the correct thermal insulation for the operating ambient temperature maintains a thermal balance where the heat output from the trace heating matches the heat loss from the pipe.

  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. Hydronics - Wikipedia

    en.wikipedia.org/wiki/Hydronics

    Chillers and cooling towers are used either separately or together as means to provide water cooling, while boilers heat water. A recent innovation is the chiller boiler system, which provides an efficient form of HVAC for homes and smaller commercial spaces. A hydronic fan unit heater used for maintaining warmth within an industrial setting.

  7. Why is Tulane called the Green Wave? Nickname history ... - AOL

    www.aol.com/why-tulane-called-green-wave...

    It's also likely the Green Wave moniker is also closely related to the university's proximity to water — though no direct mention was made by Tulane's explanation of the nickname. The university ...

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