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  2. Fin (extended surface) - Wikipedia

    en.wikipedia.org/wiki/Fin_(extended_surface)

    There are four commonly possible fin tip (=) conditions, however: the tip can be exposed to convective heat transfer, insulated, held at a constant temperature, or so far away from the base as to reach the ambient temperature. For the first case, the second boundary condition is that there is free convection at the tip.

  3. Solar water heating - Wikipedia

    en.wikipedia.org/wiki/Solar_water_heating

    At the header the gas then condenses, releasing heat there, and the liquid runs back down inside the tube. Since the evacuated tubes themselves do not contain water, they are not vulnerable to frosting. The water passes through the thermally insulated header only, and in climates with moderate frosts, no draindown system is required.

  4. Thermal insulation - Wikipedia

    en.wikipedia.org/wiki/Thermal_insulation

    Different materials may be used for thermal insulation, including polyethylene aerogels that reduce solar absorption and parasitic heat gain which may improve the emitter's performance by over 20%. [5] Other aerogels also exhibited strong thermal insulation performance for radiative cooling surfaces, including a silica-alumina nanofibrous ...

  5. Solar thermal collector - Wikipedia

    en.wikipedia.org/wiki/Solar_thermal_collector

    A dark coating is applied to the sun-facing side of the absorber assembly to increase its absorption of solar energy. A common absorber coating is black enamel paint. In higher performance solar collector designs, the transparent cover is tempered soda-lime glass having reduced iron oxide content same as for photovoltaic solar panels.

  6. Thermal barrier coating - Wikipedia

    en.wikipedia.org/wiki/Thermal_barrier_coating

    Thermal barrier coating (colored white) on a turbine guide vane in a V2500 turbofan engine. Thermal barrier coatings (TBCs) are advanced materials systems usually applied to metallic surfaces on parts operating at elevated temperatures, such as gas turbine combustors and turbines, and in automotive exhaust heat management.

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Exhaust heat management - Wikipedia

    en.wikipedia.org/wiki/Exhaust_Heat_Management

    Exhaust heat wrapping has been used for many years to improve performance and avoid burns from motorcycle exhausts. Heat wrap consists of a high-temperature synthetic fabric which is wrapped around the manifold. Often sold as a cheap and easy way to boost horsepower, exhaust wrap does not increase engine output much. [1]

  9. Customize your mailbox font size, sender display name, and ...

    help.aol.com/articles/customize-your-mailbox...

    AOL Desktop Gold lets you personalize the look and feel of your mailbox by adjusting your mail settings to better fit your needs. Through the settings menu you can choose how a sender's display name is shown, adjust the size of the fonts in your mailbox, customize the date column in your mailbox, and more.