US Patent 7820066 Fluid composition having enhanced heat transfer efficiency

A fluid composition includes a coolant and a plurality of nanoparticles dispersed within the coolant. The plurality of nanoparticles includes glass, silica, pumices, metal compounds adapted to react with chloride in the coolant, and/or mixtures thereof. The plurality of nanoparticles substantially increases heat capacity of the coolant and enhances heat transfer efficiency of the fluid composition.