Method of making nanaofluids for ground souce heat pumps and other applications
AssigneeACTA Technology Inc
InventorJohn Melvin Olson
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Abstract
A method on making a nanofluid using nanoparticles without the use of a surfactant to hold the nanoparticles in suspension.
Claims19
A method of increasing the heat transfer of a liquid comprising the steps of:
- producing a nanofluid by adding fumed nanoparticles into the said fluid;
- then sonicating the mixture;
- and
- checking to insure the sonication energy, pulse time, temperature, pH, and duration of sonication are producing a stable dispersion without adding a surfactant to the mixture to hold the nanoparticles in suspension.
A stable nanofluid comprising a glycol-water mixture wherein said glycol-water mixture comprises water present from 6 to 90 volume % of the mixture and a plurality of fumed nanoparticles present in the said nanofluid in the range of 1 to 10 weight percent, wherein said nanofluid is free of a surfactant holding the said fumed nanoparticles in suspension, wherein said nanofluid has a pH range of 2.31 to 10.30.
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Dependencies are inferred from the claim text.