The application heat tranfer process has widely used in several areas of industry, one of
regular device that used is heat exchanger that could be found in cooling system, refineries,
power plant, etc. The commonly fluids used in heat exchanger were water, minral oil, and
ethylene glycol which has poor heat transfer characteristic. Therefore, nanofluid was used to
improve the heat transfer characteristic of fluid used in heat exchanger. This study added
NiO nanoparticle (siintering and unsintering) into distlled water. This study aimed to …