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  2. Thermodynamic pump testing - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_pump_testing

    In an effort to minimize energy costs and associated greenhouse gas emissions, Melbourne Water in Australia applied thermodynamic pump testing to monitor pumps at four major pumping stations. Over the course of 2003 and 2004, 23 water and wastewater pumps were tested as part of this project.

  3. Aquifer test - Wikipedia

    en.wikipedia.org/wiki/Aquifer_test

    A slug test is a variation on the typical aquifer test where an instantaneous change (increase or decrease) is made, and the effects are observed in the same well. This is often used in geotechnical engineering settings to get a quick estimate (minutes instead of days) of the aquifer properties immediately around the well.

  4. Net positive suction head - Wikipedia

    en.wikipedia.org/wiki/Net_positive_suction_head

    If an NPSH A is say 10 bar then the pump you are using will deliver exactly 10 bar more over the entire operational curve of a pump than its listed operational curve. Example: A pump with a max. pressure head of 8 bar (80 metres) will actually run at 18 bar if the NPSH A is 10 bar. i.e.: 8 bar (pump curve) plus 10 bar NPSH A = 18 bar.

  5. Affinity laws - Wikipedia

    en.wikipedia.org/wiki/Affinity_laws

    Therefore, you can estimate the impact of changing one variable while keeping the others constant. When determining the ideal pump for a given application we are regularly changing the motor (i.e. altering the pump speed), or milling down the impeller diameter to tune the pump to operate at the flowrate and head needed for our system.

  6. Russia official says Trump's threat will not stop work on ...

    www.aol.com/news/russia-official-says-trumps...

    Trump last week demanded that BRICS member countries commit to not creating a new currency or supporting another currency that would replace the U.S. dollar, saying they would otherwise face 100% ...

  7. Prince Andrew's Business Adviser Accused of Being 'Chinese ...

    www.aol.com/lifestyle/prince-andrews-business...

    Prince Andrew is at the center of more controversy.. The Duke of York, 64, who is King Charles' brother, reportedly had close business links with a Chinese national, who is alleged to be a spy ...

  8. Water well pump - Wikipedia

    en.wikipedia.org/wiki/Water_well_pump

    These pumps, often submersible and powered by electricity, can access water reserves located much deeper than shallow wells, ensuring a consistent supply even during periods of drought. They include different kinds of pumps, most of them submersible pumps: Hand pump, manually operated; Injector, a jet-driven pump; Mechanical or rotary lobe pump ...

  9. How to avoid bankruptcy in retirement — and safeguard your ...

    www.aol.com/finance/avoid-bankruptcy-in...

    You can use your 401(k) to pay for an immediate financial need, like medical expenses for you or a family member, funds for buying a home, tuition costs, eviction prevention, home repairs, funeral ...

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