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  2. Smokeproof enclosure - Wikipedia

    en.wikipedia.org/wiki/Smokeproof_enclosure

    Under United States building codes, the stairwell of a smokeproof enclosure must have walls with a 2-hour fire resistance rating and vestibule doors (if provided) with a 1.5 hour fire resistance rating. [7]

  3. Heat and smoke vent - Wikipedia

    en.wikipedia.org/wiki/Heat_and_smoke_vent

    The majority of guidance available for design of heat and smoke building vents installed in buildings is restricted to nonsprinklered, single-story buildings. [4] This is partly a historical consequence of the installation of heat and smoke vents following the August 1953 General Motors, Livonia, MI major fire in a nonsprinklered manufacturing facility which effectively stopped the production ...

  4. Direct vent fireplace - Wikipedia

    en.wikipedia.org/wiki/Direct_vent_fireplace

    Direct vent fireplaces are extremely efficient compared to a traditional fireplace and can operate at about 85% efficiency. Even a very efficient traditional fireplace only operates at about 15% efficiency. This is because most of the hot air generated by the fire travels up the chimney due to convection.

  5. Fireplace insert - Wikipedia

    en.wikipedia.org/wiki/Fireplace_insert

    A fireplace insert [1] is a device that can be inserted into an existing masonry or prefabricated wood fireplace. Fireplace inserts can be fuelled by gas, wood, electricity, coal, or wood pallet. Most fireplace inserts are made from cast iron or steel. Fresh air enters through vents below the insert, where it then circulates around the main ...

  6. Fume hood - Wikipedia

    en.wikipedia.org/wiki/Fume_hood

    Sliding up and down front panel with glass protected from fumes and explosions. Each fume hood was illuminated, equipped with gas installation for heating and running water with a drain. Harmful and corrosive gaseous byproducts of reactions were actively removed using the natural draft of a fireplace chimney.

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