Nanofluids and a method of making nanofluids for ground source heat pumps and other applications
US8580138B2 · kind B2 · utility
0Cited by
8References
3Claims
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Assignee
Inventor
Key dates
| Filing date | Sep 11, 2011 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Sep 11, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y30/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.