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  2. Chest tube - Wikipedia

    en.wikipedia.org/wiki/Chest_tube

    The second chamber functions as a "water seal", which acts as a one way valve allowing gas to escape, but not reenter the chest. Air bubbling through the water seal chamber is usual when the patient coughs or exhales but may indicate, if continual, a pleural or system leak that should be evaluated critically.

  3. Bubble column reactor - Wikipedia

    en.wikipedia.org/wiki/Bubble_column_reactor

    A bubble column reactor is a very simple device consisting of a vertical vessel filled with water with a gas distributor at the inlet. Due to the ease of design and operation, which does not involve moving parts, they are widely used in the chemical , biochemical, petrochemical , and pharmaceutical industries to generate and control gas-liquid ...

  4. Fluidized bed reactor - Wikipedia

    en.wikipedia.org/wiki/Fluidized_bed_reactor

    A fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a solid granular material (usually a catalyst) at high enough speeds to suspend the solid and cause it to behave as though it were a fluid.

  5. Circulating fluidized bed - Wikipedia

    en.wikipedia.org/wiki/Circulating_fluidized_bed

    The water usage can also be reduced with the design of plug-free water spray nozzles. [14] The CFBS can undergo a self-cleaning process, reducing the cost of maintenance. The operating temperature is lower thus the production of the nitrogen oxides, a contributor to smog, is lower. [15] Despite all the advantages, the CFBS is limited to 400 MW ...

  6. Hydrostatic seal - Wikipedia

    en.wikipedia.org/wiki/Hydrostatic_seal

    The seal face was developed to work under high pressure conditions, however the seal face began to warp and deteriorate during stress tests. Once ammonia ( the liquid used in the first hydrostatic seal ) was added, the two seal faces would make contact with each other and begin the erosion process. Cold water was then tested as the ...

  7. Oscillating water column - Wikipedia

    en.wikipedia.org/wiki/Oscillating_water_column

    The earliest use of oscillating water columns was in whistling buoys. These buoys used the air pressure generated in the collecting chamber to power a PTO system that consisted of a whistle or foghorn. Rather than generating electricity, the PTO would generate sound, allowing the buoy to warn boats of dangerous water. J. M.

  8. Hermetic seal - Wikipedia

    en.wikipedia.org/wiki/Hermetic_seal

    A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals , rubber , and plastics .

  9. Stuffing box - Wikipedia

    en.wikipedia.org/wiki/Stuffing_box

    A sound stuffing box installation is critical to safety because failure can admit a catastrophic volume of water into the boat. In a common type of stuffing box, rings of braided fiber, known as shaft packing or gland packing, form a seal between the shaft and the stuffing box.