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  2. Baffle (heat transfer) - Wikipedia

    en.wikipedia.org/wiki/Baffle_(heat_transfer)

    Implementation of baffles is decided on the basis of size, cost and their ability to lend support to the tube bundles and direct flow: Longitudinal Flow Baffles (used in a two-pass shell) Impingement Baffles (used for protecting bundle when entrance velocity is high) Orifice Baffles; Single segmental; Double segmental; Support/Blanking baffles

  3. Heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Heat_exchanger

    The most common type of baffle is the segmental baffle. The semicircular segmental baffles are oriented at 180 degrees to the adjacent baffles forcing the fluid to flow upward and downwards between the tube bundle. Baffle spacing is of large thermodynamic concern when designing shell and tube heat exchangers. Baffles must be spaced with ...

  4. Shell-and-tube heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Shell-and-tube_heat_exchanger

    The tube fluid circulates inside the tubes, while the shell fluid flows around them, guided by various types of baffles (e.g., segmental, helical, or disc-and-doughnut). The movement of the shell fluid, designed to enhance turbulence and heat transfer, can be arranged in different flow configurations, such as counter-current, co-current, or ...

  5. Cutoff frequency - Wikipedia

    en.wikipedia.org/wiki/Cutoff_frequency

    However, the dominant mode cutoff frequency can be reduced by the introduction of baffle inside the circular cross-section waveguide. [4] For a single-mode optical fiber , the cutoff wavelength is the wavelength at which the normalized frequency is approximately equal to 2.405.

  6. Sound attenuator - Wikipedia

    en.wikipedia.org/wiki/Sound_attenuator

    A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.

  7. Are you a fired federal employee? Here are resources to help ...

    www.aol.com/fired-federal-employee-resources...

    Tens of thousands of federal workers got axed recently. If you're one of them, don't panic. Here's a guide on what to do now.

  8. Spherical cap - Wikipedia

    en.wikipedia.org/wiki/Spherical_cap

    In geometry, a spherical cap or spherical dome is a portion of a sphere or of a ball cut off by a plane. It is also a spherical segment of one base, i.e., bounded by a single plane. If the plane passes through the center of the sphere (forming a great circle ), so that the height of the cap is equal to the radius of the sphere, the spherical ...

  9. US importers stockpile Italian Prosecco as a hedge against ...

    www.aol.com/news/us-importers-stockpile-italian...

    American importers have been stockpiling Italian bubbly Prosecco as a hedge against the impact of possible European Union tariffs threatened by President Donald Trump, wine industry data show. U.S ...