▎ 摘　　要

NOVELTY - A heat-transport fluid (1) comprises a solvent (2) consisting of water or organic substance, carbon nanotubes (3) dispersed in the solvent, and a dispersing agent (4) which contacts the carbon nanotubes and disperses the carbon nanotubes in the solvent. The dispersing agent comprises graphene or graphene oxide. USE - Heat-transport fluid is used for heating and cooling of apparatus. Uses include but are not limited to inverters, fuel cells, secondary batteries, motors, elements of electronic devices, floor heating, bathroom heating, solar-heat recovery, and intercoolers. ADVANTAGE - The heat-transport fluid reduces the thermal resistance of substance contained in a fluid and thermal resistance between materials, and improves heat conductivity. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the dispersing agent adsorbed with respect to carbon nanotubes. Heat-transport fluid (1) Solvent (2) Carbon nanotubes (3) Dispersing agent (4) Functional group (4a)