U
- UPPER WEATHER ENCLOSURE
- A non-gas-tight enclosure on the roof of the precipitator to
shelter equipment (T/R sets, rappers, purge air fans, etc.) and maintenance personnel.
- U-TUBE COOLER
- A system where the gas stream is cooled by drawing air through a series of
tubes.
- U-TUBE MANOMETER
- See MANOMETER.
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