Nanofluids and a method of making nanofluids for ground source heat pumps and other applications
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United States of America Patent
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Nov 12, 2013
Grant Date -
Mar 14, 2013
app pub date -
Sep 11, 2011
filing date -
Sep 11, 2011
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Abstract
This invention covers nanofluids. Nanofluids are a combination of particles between 1 and 100 nanometers, a surfactant and the base fluid. The nanoparticles for this invention are either pyrogenic nanoparticles or carbon nanotubes. These nanofluids improve the heat transfer of the base fluids. The base fluid can be ethylene glycol, or propylene glycol, or an aliphatic-hydrocarbon based heat transfer fluid. This invention also includes a method of making nanofluids. No surfactant is used to suspend the pyrogenic nanoparticles in glycols.
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