Process for designing and producing cooling fluids

Patent metadata

Field	Value
Publication number	US-10468124-B2
Application number	US-201213355651-A
Country	US
Kind code	B2
Filing date	Jan 23, 2012
Priority date	Jan 23, 2012
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

The present invention provides a process for designing and producing a cooling fluid for use in a cooling system. The process uses molecular dynamics to calculate the thermal properties of one or more fluid-nanoparticle solutions, and thereby aids in the study, selection and/or production of desired cooling fluids based on first principle simulations.

First claim

We claim:

1. A process for designing and producing a cooling fluid for use in a cooling system, the process comprising:
selecting a plurality of liquid-nanoparticle combinations to be simulated, each of the liquid-nanoparticle combinations including a liquid and a plurality of nanoparticles;
calculating a nanoparticle agglomerate shape distribution for each of the liquid-nanoparticle combinations;
calculating a thermal conductivity for each of the liquid-nanoparticle combinations as a function of the liquid, the plurality of nanoparticles and the nanoparticle agglomerate shape distribution for each of the liquid-nanoparticle combinations;
selecting a liquid-nanoparticle combination as a function of the calculated thermal conductivities for the liquid-nanoparticle combinations;
providing a liquid and a plurality of nanoparticles corresponding to the selected liquid-nanoparticle combination; and
mixing the provided liquid and plurality of nanoparticles to produce a cooling fluid for use in a cooling system.

2. The process of claim 1 , further including calculating a clustering behavior of the plurality of nanoparticles within the liquid for each of the liquid-nanoparticle combinations.

3. The process of claim 1 , wherein the plurality of nanoparticles is a plurality of nanotubes and the plurality of liquid-nanoparticle combinations is a plurality of liquid-nanotube combinations.

4. The process of claim 3 , wherein the calculated agglomerate shape distribution is a function of at least one liquid-nanotube combination property selected from the group consisting of a temperature of the liquid, an aspect ratio of the nanotubes, a length of the nanotubes, a chirality of the nanotubes, a homo-molecular nanotube system, a hetero-molecular nanotube system and combinations thereof.

5. The process of claim 4 , wherein the agglomerate shape distribution is calculated using molecular dynamics.

6. The process of claim 5 , wherein the thermal conductivity is calculated using a large-scale molecular dynamics simulator.

7. The process of claim 6 , wherein the calculated thermal conductivity is a function of at least one liquid-nanotube combination property selected from the group consisting of a temperature of the liquid, an aspect ratio of the nanotubes, a length of the nanotubes, a chirality of the nanotubes, a homo-molecular nanotube system, a hetero-molecular nanotube system, a concentration of the nanotubes within the liquid, an agglomerate structure of the nanotubes within the liquid and combinations thereof.

Assignees

• Shieh Tenghua Tom
• Nomura Shohei
• Fiederlein Erich Benjamin
• Yamashita Kiyotaka
• Toyota Eng & Mfg North America

Inventors

• Shieh Tenghua Tom
• Nomura Shohei
• Fiederlein Erich Benjamin
• Yamashita Kiyotaka

Classifications

• G16C20/30

  Prediction of properties of chemical compounds, compositions or mixtures · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• C09K5/10

  Liquid materials · CPC title

• G16C20/50 Primary

  Molecular design, e.g. of drugs · CPC title

• G16C10/00

  Computational theoretical chemistry, i.e. ICT specially adapted for theoretical aspects of quantum chemistry, molecular mechanics, molecular dynamics or the like · CPC title