This project focuses on heat transfer due to addition of nanoparticles in the working fluid. Heat transfer has played a vital role in numerous industrial applications including in-vehicles and avionics, electronic equipment dissipates heat which needs cooling, heating and cooling system in buildings, industrial processes, Petrochemical industries, textile, food and other plants. Fluids are best source to remove, add or transfer of heat. Suspension of the nanoparticles in a working fluid is one of the best ways to enhance the heat transfer. Nanofluids are studied due to their heat transfer properties. Heat transfer augmentation is an essential issue in energy saving aspects. Conventional fluids like (e.g. water, ethylene and engine oil) have low thermal conductivities than solids. For example, thermal conductivity of Cu is 700 times greater than water and 3000 times greater than engine oil. Since nanoparticles are small in size and have large specific area, nanofluids have superior properties like thermal conductivity, minimum clogging in flow passage, long-term stability and homogeneity.