Heat transfer medium containing multi-wall carbon nanotubes

Patent metadata

Field	Value
Publication number	US-10138404-B1
Application number	US-201816035275-A
Country	US
Kind code	B1
Filing date	Jul 13, 2018
Priority date	Jun 26, 2015
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A nanofluid composed of a base fluid and a solid nanocomposite particle, where the solid nanocomposite particle consists of a carbon nanotube and a metal oxide nanoparticle selected from the group consisting of Fe 2 O 3 , Al 2 O 3 , and CuO. The metal oxide nanoparticle is affixed inside of or to the outer surface of the carbon nanotube, and the solid nanocomposite particle is homogeneously dispersed in the base fluid. The heat transfer and specific heat capacity properties of the nanofluid are measured using differential scanning calorimetry and heat exchanger experiments with different nanocomposite concentrations and different metal oxide percent loadings.

First claim

The invention claimed is:

1. A water-based nanofluid heat transfer medium comprising:
a base fluid comprising an aqueous fluid;
a solid nanocomposite particle comprising a multi-wall carbon nanotube having a 10 to 20 nm outer diameter and a length from 10 to 30 μm and a metal oxide nanoparticle selected from the group consisting of Fe 2 O 3 , Al 2 O 3 , and CuO wherein the metal oxide nanoparticle is affixed to the outer surface of the carbon nanotube;
wherein the carbon nanotube is not functionalized with reactive functional groups;
wherein the solid nanocomposite particle is homogeneously dispersed in the base fluid; and
wherein the nanofluid does not contain a surfactant.

2. The water-based nanofluid heat transfer medium of claim 1 , wherein the solid nanocomposite particle comprises 0.5-13% metal oxide nanoparticles by weight based on the total weight of the nanocomposite particle.

3. The water-based nanofluid heat transfer medium of claim 1 , wherein the solid nanocomposite particle comprises 0.5-3% metal oxide nanoparticles by weight and the metal oxide nanoparticle is a crystal particle with a longest diameter of 0.5-10 nm.

4. The water-based nanofluid heat transfer medium of claim 3 , wherein the solid nanocomposite particle reaches a maximum % weight loss at 530-570° C. under a thermal degradation condition in an air atmosphere.

5. The water-based nanofluid heat transfer medium of claim 1 , wherein the solid nanocomposite particle comprises 7-13% metal oxide nanoparticles by weight and the metal oxide nanoparticle is a crystal particle with a longest diameter of 1-20 nm.

6. The water-based nanofluid heat transfer medium of claim 5 , wherein the solid nanocomposite particle reaches a maximum % weight loss at 480-520° C. under a thermal degradation condition in an air atmosphere.

7. The water-based nanofluid heat transfer medium of claim 1 , wherein the nanofluid comprises 0.005-0.15% solid nanocomposite particles by weight based on the total weight of the nanofluid.

8. The water-based nanofluid heat transfer medium of claim 7 , wherein the kinematic viscosity of the nanofluid is 1-13% greater than the base fluid alone at temperatures ranging from 25-65° C.

Assignees

• Univ King Fahd Pet & Minerals

Inventors

• Atieh Muataz Ali
• Manasrah Abdallah Darweesh
• Al-Mubaiyedh Usamah Ahmad
• Laoui Tahar
• Ben-Mansour Rached

Classifications

• F28F2255/20

  with nanostructures · CPC title

• F28F23/00

  Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions (heat-transfer, heat-exchange or heat-storage materials C09K5/00) · CPC title

• C09K5/10 Primary

  Liquid materials · CPC title