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  2. Multilevel groundwater monitoring systems - Wikipedia

    en.wikipedia.org/wiki/Multilevel_groundwater...

    In the early 1980s, researchers used multiple gas-drive pumps installed at different depths in boreholes to collect depth-discrete groundwater samples in a fractured rock aquifer. [11] A commercial version of this gas-drive system, named "Barcad" after its inventors, is available from BESST, Inc.

  3. Solar-powered pump - Wikipedia

    en.wikipedia.org/wiki/Solar-powered_pump

    A windpump replaced by a solar-powered pump at a water hole in the Augrabies Falls National Park. [Notes 1] This solar water pump up to 3.7 kW is useful for farmers.Solar-powered pumps run on electricity generated by photovoltaic (PV) panels or the radiated thermal energy available from collected sunlight as opposed to grid electricity- or diesel-run water pumps. [1]

  4. Water well pump - Wikipedia

    en.wikipedia.org/wiki/Water_well_pump

    Hand pump, manually operated; Injector, a jet-driven pump; Mechanical or rotary lobe pump requiring mechanical parts to pump water; Solar-powered water pump; Pump driven by air as used by the Amish; Pump driven by air as used in the Australian outback; Manual pumpless or hand pump wells requiring a human operator; The pump replaces the use of a ...

  5. Well drainage - Wikipedia

    en.wikipedia.org/wiki/Well_drainage

    The depth is selected in accordance to aquifer properties. The well filter must be placed in a permeable soil layer. The spacing can be calculated with a well spacing equation using discharge, aquifer properties, well depth and optimal depth of the water table. The determination of the optimum depth of the water table is the realm of drainage ...

  6. Drawdown (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Drawdown_(hydrology)

    Static level is the level of water in the well when no water is being removed from the well by pumping. [8] Water table is the upper level of the zone of saturation, an underground surface in which the soil or rock is permanently saturated with water. [9] Well yield is the volume of water per unit time that is produced by the well from pumping. [8]

  7. Cone of depression - Wikipedia

    en.wikipedia.org/wiki/Cone_of_depression

    A cone of depression is a circular area surrounding a well where groundwater levels are reduced from pumping. [1] [2] In an unconfined aquifer (water table), this is an actual depression of the water levels. In confined aquifers , the cone of depression is a reduction in the pressure head surrounding the pumped well.

  8. Stored Energy at Sea - Wikipedia

    en.wikipedia.org/wiki/Stored_Energy_at_Sea

    The input pressure of both pumps is given by the water column above them. For the additional pump this is the water column in the sphere and for the pump turbine it is the water column in the cylinder." [6] The maximum capacity for the hollow concrete sphere depends on the total pump-turbine efficiency, the installation depth and the inner volume.

  9. India Mark II - Wikipedia

    en.wikipedia.org/wiki/India_Mark_II

    A broken India Mark II pump in rural Uganda A busy Mark II pump in Uganda. Children often bear the responsibility for collecting water. Durability needs to be incorporated into pump design to the handle the heavy use (and abuse). The India Mark II is a human-powered pump designed to lift water from a depth of 50–80 m. [1]

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