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  2. Contactor - Wikipedia

    en.wikipedia.org/wiki/Contactor

    AC contactor for pump application. A contactor is an electrically controlled switch used for switching an electrical power circuit. [1] A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch.

  3. Gas–liquid contactor - Wikipedia

    en.wikipedia.org/wiki/Gas–liquid_contactor

    A gas–liquid contactor is a particular chemical equipment used to realize the mass and heat transfer between a gas phase and a liquid phase. Gas–liquid contactors can be used in separation processes (e.g. distillation, absorption) or as gas–liquid reactors or to achieve both purposes within the same device (e.g. reactive distillation).

  4. Electrical contact - Wikipedia

    en.wikipedia.org/wiki/Electrical_contact

    For contact spots of radii smaller than the mean free path of electrons , ballistic conduction of electrons occurs, resulting in a phenomenon known also as Sharvin resistance. [10] Contact force or pressure increases the size of the a-spot which decreases the constriction resistance and the electrical contact resistance. [ 11 ]

  5. Centrifugal extractor - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_extractor

    Multistage centrifugal extractor cross section drawing The feed solution initially containing one or more solutes (heavy phase on the cross section drawing Fig 3.), and an immiscible solvent having a different density (light phase on cross section sketches) flow counter-currently through the extractor’s rotor, designed with a stack of ...

  6. Contact resistance - Wikipedia

    en.wikipedia.org/wiki/Contact_resistance

    If a contact patch is sufficiently small, with dimensions comparable or smaller than the mean free path of electrons resistance at the patch can be described by the Sharvin mechanism, whereby electron transport can be described by ballistic conduction. Generally, over time, contact patches expand and the contact resistance at an interface ...

  7. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    A list, usually tabular and often on the drawing (if not accompanying the drawing on a separate sheet), listing the parts needed in an assembly, including subparts, standard parts, and hardware. There is no consistently enforced distinction between an L/M, a BoM, or a P/L. PLM: product lifecycle management; plant lifecycle management: See also ...

  8. Wikipedia : Manual of Style/Chemistry/Structure drawing

    en.wikipedia.org/.../Chemistry/Structure_drawing

    Draw the structure in ChemDraw 12 or later; Go to File → Save As; Choose PDF as the save as format; Upload the resulting PDF to the Texterity FreeSVG converter and you should end up with a very light SVG. Alternative free SVG converter: Online SVG converter.

  9. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.