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  2. Impeller - Wikipedia

    en.wikipedia.org/wiki/Impeller

    Several different types of pump impellers Flexible impeller of cooling system pump of an outboard engine (1 euro cent coin for comparison, diameter 16.25 mm). An impeller is a rotating component of a centrifugal pump that accelerates fluid outward from the center of rotation, thus transferring energy from the motor that drives the pump to the fluid being pumped.

  3. Centrifugal compressor - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_compressor

    The simplest inlet to a centrifugal compressor is typically a simple pipe. Depending upon its use/application inlets can be very complex. They may include other components such as an inlet throttle valve, a shrouded port, an annular duct (see Figure 1.1), a bifurcated duct, stationary guide vanes/airfoils used to straight or swirl flow (see Figure 1.1), movable guide vanes (used to vary pre ...

  4. Centrifugal pump - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_pump

    A centrifugal pump containing two or more impellers is called a multistage centrifugal pump. The impellers may be mounted on the same shaft or on different shafts. At each stage, the fluid is directed to the center before making its way to the discharge on the outer diameter. For higher pressures at the outlet, impellers can be connected in series.

  5. Rotodynamic pump - Wikipedia

    en.wikipedia.org/wiki/Rotodynamic_pump

    In which the water comes from the tank at the center of the impeller and exits at the top of the pump. The impeller is called the heart of the system. Which have three types 1. Open impeller, 2. Semi-open impeller, 3. Enclosed impeller, in which the enclosed impeller gives the best efficiency. Enclosed impellers have a series of backward-curved ...

  6. Euler's pump and turbine equation - Wikipedia

    en.wikipedia.org/wiki/Euler's_pump_and_turbine...

    Euler’s pump and turbine equations can be used to predict the effect that changing the impeller geometry has on the head. Qualitative estimations can be made from the impeller geometry about the performance of the turbine/pump. This equation can be written as rothalpy invariance: =

  7. Exclusive: Quizlet acquires Slader as it aims to become the ...

    www.aol.com/news/quizlet-schools-reopening...

    The company raised a $30 million Series C in May 2020, bringing the company's post-money valuation to $1 billion. In the U.S., Quizlet is used by two in three high school students and one in two ...

  8. Slip factor - Wikipedia

    en.wikipedia.org/wiki/Slip_factor

    Fig 1. Ideal and Actual velocity triangles at impeller exit. Mathematically, the Slip factor denoted by 'σ' is defined as the ratio of the actual & ideal values of the whirl velocity components at the exit of the impeller. The ideal values can be calculated using an analytical approach while the actual values should be observed experimentally.

  9. Michelle Obama Just Announced She Will Not Attend Donald ...

    www.aol.com/michelle-obama-just-announced-she...

    Michelle Obama will not join her husband, Barack Obama, at Donald Trump's second presidential inauguration, a spokesperson for the former first couple confirmed to PEOPLE on Tuesday, Jan. 14.. The ...