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US 11,891,316 B2Granted
Devices for the treatment of liquids using plasma discharges and related methods
OwnerDesmond A. Fraser, Patrick J. Hughes +4inventors
InventorsDesmond A. Fraser, Patrick J. Hughes, Hossein Ghaffari Nik, Akrem Hassen Adem Aberra, Richard B. McMurray, Shelley Marie Grandy
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Abstract
Plasma discharges and electromagnetic fields may be applied to a liquid, such as water, to treat unwanted material in the liquid.
Claims19
A device for treating unwanted material in a coolant comprising:
- a plasma discharge section configured as a plurality of immersible and parallel, dielectric barrier discharge elements, where the number of elements is based on the mass flow rate of the coolant,
- each of the plurality of immersible and parallel, dielectric barrier discharge elements operable to separately receive a respective, different portion of the coolant in parallel, and, each element comprising (i) at least one negatively charged electrode comprising a side covered by a dielectric and another side uncovered by the dielectric or another dielectric and at least one positively charged electrode operable to generate one or more full or partial plasma discharges within the respective portion of the coolant to create reactive and molecular species of ions in the respective portion of the coolant to treat the unwanted material, where the unwanted material comprises biofilm or Legionella.
A method for treating unwanted material in a coolant comprising:
- configuring a plurality of parallel, dielectric barrier discharge elements of a plasma discharge section based on a mass flow rate of the coolant;
- separately receiving a different, respective portion of the coolant in each of the plurality of parallel, dielectric barrier discharge elements, each element comprising at least one negatively charged electrode comprising a side covered by a dielectric and another side uncovered by the dielectric or another dielectric and at least one positively charged electrode;
- and
- generating one or more full or partial plasma discharges within each respective portion of the coolant in each of the plurality of parallel, dielectric barrier discharge elements to create reactive and molecular species of ions in the respective portion of the coolant to treat the unwanted material, where the unwanted material comprises biofilm or Legionella.
1 more element
Dependencies are inferred from the claim text.