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  2. Radiant barrier - Wikipedia

    en.wikipedia.org/wiki/Radiant_barrier

    Radiant barrier materials must have low emissivity (usually 0.1 or less) at the wavelengths at which they are expected to function. For typical building materials, the wavelengths are in the mid- and long-infrared spectrum, in the range of 3-15 micrometres. [citation needed] Radiant barriers may or may not exhibit high visual reflectivity.

  3. Radiator reflector - Wikipedia

    en.wikipedia.org/wiki/Radiator_reflector

    A radiator reflector is a thin sheet or foil applied to the wall behind, and closely spaced from, a domestic heating radiator. The intention is to reduce heat losses into the wall by reflecting radiant heat away from the wall. It is a form of radiant barrier and is intended to reduce energy losses and hence decrease fuel expenditure.

  4. Building insulation material - Wikipedia

    en.wikipedia.org/wiki/Building_insulation_material

    Reflective aluminum foil is the most common material used as a radiant barrier. It has no significant mass to absorb and retain heat. It also has very low emittance values "E-values" (typically 0.03 compared to 0.90 for most bulk insulation) which significantly reduces heat transfer by radiation.

  5. R-value (insulation) - Wikipedia

    en.wikipedia.org/wiki/R-value_(insulation)

    Installed faced fiberglass batt insulation with its R-value visible (R-21) [1]. The R-value (in K⋅m 2 /W) is a measure of how well a two-dimensional barrier, such as a layer of insulation, a window or a complete wall or ceiling, resists the conductive [2] flow of heat, in the context of construction. [3]

  6. College Football Playoff first round showed system is broken ...

    www.aol.com/college-football-playoff-already...

    There’s too much money at stake (an estimated $800 million annually now, and possibly $1.2 billion beginning in 2026) for the leaders of college football to run through this willy-nilly, hoping ...

  7. Luke Grimes says it's hard work to remain a Hollywood heartthrob — but that's not why he's committed to the gym.. The Yellowstone actor, 40, revealed to Men’s Health that he’s figuring out ...

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