downdraught


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downdraft, Brit. downdraught

1. A downward current of air in a chimney or flue, often carrying smoke with it.
2. A downward current of air resulting from the passage of air across a window surface, which cools it and increases its density so that it moves downward.
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Todd Engineering will be installing its top of the range downdraught spraybooths with integrated E3 Greentech Drying Robot in to each site.
Devonshire was already familiar with AirBench products and is a long-standing user of AirBench downdraught benches for smaller components such as drawer fronts.
Devonshire were already familiar with AirBench products and are a long-standing user of AirBench downdraught benches for smaller components such as drawer fronts.
The rolls have a 3-dimensional nature because of the difference in horizontal wind speed between updraught and downdraught regions.
Edward Ristaino, 63, was caught in high winds that blew his craft up to 18,000ft before it collapsed in a downdraught.
Intensely active cumulonimbus builds very rapidly, the turbulence within such a cloud sees clashing vertical upthrusts and downdraughts immediately alongside each other and even meeting head-on so driving the downdraught forcibly aloft, by tens of thousands of feet, well above the freezing level, hailstones will already be present and such activity sees collision and accumulation.
Passive downdraught evaporative cooling (PDEC) is a traditional means of environmental control that has been used for centuries in parts of the Middle East, notably Iran and Turkey.
But while some wind goes round the mesocyclone, some runs full square into this meteorological brick wall and is forced downward, creating a `rear flank downdraught' (RFD) which many experts believe is what makes or breaks a tornadic storm.