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  2. Downdraft table - Wikipedia

    en.wikipedia.org/wiki/Downdraft_table

    Downdraft tables or downdraught benches are workbenches with built-in ventilation to capture dust, smoke, and fumes and draw them away from the operator and the material being worked on. [1] They typically consist of a perforated surface whose underside is connected to a ventilation or dust collection system, to draw material through the holes ...

  3. Pontiac straight-8 engine - Wikipedia

    en.wikipedia.org/wiki/Pontiac_Straight-8_engine

    Total output was the highest ever for the "eight", rated at 230 bhp (172 kW), though some estimated it at over 300 bhp (224 kW). [14] Like the Special, only two were ever made. Note: Pontiac’s new V8 was being considered for use in the Special but was instead held back by GM marketing. They directed that the straight-eight be used to keep the ...

  4. List of Volkswagen Group petrol engines - Wikipedia

    en.wikipedia.org/wiki/List_of_Volkswagen_Group...

    [citation needed] The standard initial measuring unit for establishing the rated motive power output is the kilowatt (kW); [citation needed] and in their official literature, the power rating may be published in either the kW, or the metric horsepower (often abbreviated "PS" for the German word Pferdestärke), or both, and may also include ...

  5. Lamborghini Countach - Wikipedia

    en.wikipedia.org/wiki/Lamborghini_Countach

    The European carbureted (also known as "Downdraft" or "DD") versions used six Weber carburetors and were rated at 335 kW (455 PS; 449 hp) at 7,000 rpm and 500 N⋅m (369 lbf⋅ft) of torque at 5,200 rpm. 610 cars were built in this specification, with 66 having the fuel injection system. On the 26th of June 2024, a Lego set of the car was made.

  6. Ventilation (architecture) - Wikipedia

    en.wikipedia.org/wiki/Ventilation_(architecture)

    For residential buildings, which mostly rely on infiltration for meeting their ventilation needs, a common ventilation rate measure is the air change rate (or air changes per hour): the hourly ventilation rate divided by the volume of the space (I or ACH; units of 1/h). During the winter, ACH may range from 0.50 to 0.41 in a tightly air-sealed ...

  7. Vertical draft - Wikipedia

    en.wikipedia.org/wiki/Vertical_draft

    The term "downdraft" can also refer to a type of backdraft which occurs through chimneys which have fireplaces on the lowermost levels (such as basements) of multi-level buildings. It involves cold air coming down the chimney due to low air pressure, and makes it hard to light fires, and can push soot and carbon monoxide into domiciles.