Author(s): P. C. Mukesh Kumar, M. Mruganandam

Abstract: Now a days the technological development in industries is facing great challenges in meeting out the cooling demand as the existing coolants have reached their limitations. The nanofluids are the dispersion of the nano materials into base fluids. The novel nanofluids have been developed to solve the problems associated with the existing coolants in the thermal systems. In this investigation, seven Multi walled Carbon Nano Tube MWCNT nanofluids have been prepared by using two step method with Distilled water, Coolant oil, Engine oil, Gear oil, Vegetable oil, Coconut oil, and Grown oil as base fluids at the volume concentration of 0.1%. The flash and fire point, dynamic and kinematic viscosities have been measured. It is studied that the MWCNT/ Vegetable oil nanofluid gives highest flash point than the other fluids. Fire points of nanofluids prepared are comparatively higher than the conventional fluid. The MWCNT/Vegetable oil has highest fire point than other fluids.