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  2. Air sock - Wikipedia

    en.wikipedia.org/wiki/Air_sock

    Air socks are also easier to clean than rigid ducting because they can be dismounted and cleaned using a washing machine, whereas rigid ducting cannot be removed easily and is generally not as accessible for cleaning, requiring special tools and maneuvering for cleaning; this leads to the ducts not being cleaned, or being cleaned less often. [1 ...

  3. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

  4. List of polyurethane applications - Wikipedia

    en.wikipedia.org/wiki/List_of_polyurethane...

    Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

  5. Diffuser (thermodynamics) - Wikipedia

    en.wikipedia.org/wiki/Diffuser_(thermodynamics)

    Ducts containing fluids flowing at low velocity can usually be analyzed using Bernoulli's principle. Analyzing ducts flowing at higher velocities with Mach numbers in excess of 0.3 usually require compressible flow relations. [2] A typical subsonic diffuser is a duct that increases in area in the direction of flow. As the area increases, fluid ...

  6. Process duct work - Wikipedia

    en.wikipedia.org/wiki/Process_Duct_Work

    7) Duct Snow loads, normally inconsequential, as snow will melt quickly unless the plant is in shutdown mode. 8) Top of duct dust loads, often used as zero, since plant dust generation is much less now, than in the past. 9) Duct suction pressure loads, act perpendicular to end of duct cross section, and can be significant.

  7. Flue - Wikipedia

    en.wikipedia.org/wiki/Flue

    The heat retaining bricks are covered in a decorative material such as brick, tiles or stone. This flue gas circulation avoids the considerable heat loss to the chimney and outside air in conventional systems. The heat from the flue gases is absorbed quickly by the bricks and then released slowly to the house rather than the chimney.

  8. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    Hint: The first one can be found in the top-half of the board. Here are the first two letters for each word: SA. PL. CH. JI. LA. VI. DR. WO (SPANGRAM) NYT Strands Spangram Answer Today.

  9. Air handler - Wikipedia

    en.wikipedia.org/wiki/Air_handler

    The heat pipe uses multiple sealed pipes mounted in a coil configuration with fins to increase heat transfer. Heat is absorbed on one side of the pipe, by evaporation of the refrigerant, and released at the other side, by condensation of the refrigerant. Condensed refrigerant flows by gravity to the first side of the pipe to repeat the process.

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