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Aerosol Remote Sealing System

Lawrence Berkeley National Laboratory

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Technology Marketing SummaryMark Modera and Francois Remi Carrie from Berkeley National Laboratory have developed a rapid, economical technique to seal duct and other enclosed systems by means of an internally injected aerosol. DescriptionBerkeley National Laboratory's aerosol compound seals holes in enclosed systems and is effective even after bends and junctions. A unique, in situ aerosol sealing apparatus, also designed and built at Berkeley National Laboratory, delivers the new sealing aerosol. This multifunctional field apparatus, designed to be portable and easy to use, is powered by two, household circuits (15A/110V) and does not require the use of desiccants. In addition to performing the sealing process, Berkeley National Laboratory's compact field apparatus also measures leakage of the system before and after sealing, eliminating the need to invest in and field additional equipment. A description of the clog-free atomizing and spray drying nozzle specially designed for use with this technology is referenced below. Benefits
  • Portable
  • Works past bends and junctions
  • Includes leakage measuring capability
Applications and Industries
  • Sealing ventilation shafts
  • Sealing underground pipelines and other enclosed systems
Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 5,522,930
Patent
5,522,930
Method and device for producing and delivering an aerosol for remote sealing and coating
The invention is a method and device for sealing leaks remotely by means of injecting a previously prepared aerosol into the enclosure being sealed. Specifically the invention is a method and device for preparing, transporting, and depositing and solid phase aerosol to the interior surface of the enclosure.
Lawrence Berkeley National Laboratory 06/04/1996
Issued
Patent 5,980,984
Patent
5,980,984
Method for sealing remote leaks in an enclosure using an aerosol
The invention is a method and device for sealing leaks remotely by means of injecting a previously prepared aerosol into the enclosure being sealed according to a particular sealing efficiency defined by the product of a penetration efficiency and a particle deposition efficiency. By using different limits in the relationship between penetration efficiency and flowrate, the same method according the invention can be used for coating the inside of an enclosure. Specifically the invention is a method and device for preparing, transporting, and depositing a solid phase aerosol to the interior surface of the enclosure relating particle size, particle carrier flow rate, and pressure differential, so that particles deposited there can bridge and substantially seal each leak, with out providing a substantial coating at inside surfaces of the enclosure other than the leak. The particle size and flow parameters can be adjusted to coat the interior of the enclosure (duct) without substantial plugging of the leaks depending on how the particle size and flowrate relationships are chosen.
Lawrence Berkeley National Laboratory 11/09/1999
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
IB-1029LicensedAvailable - Available for licensing for fields of use other than sealing HVAC systems.06/15/201006/24/2010

Contact LBL About This Technology

To: Shanshan Li<ipo@lbl.gov>