Investigation the Cooling Performance of Vehicle Engines Using Radiator with Nano-Fluid as a Coolant

摘要

In the cooling system of the automobile engine, the water which is used as a coolant is evaporated due to high engine temperature, so it needs to add some additives to the coolant water but they don't give high performance compared to adding some of Nano-particles. This work investigated the heat transfer characteristics with Nano-fluid used in a radiator as vehicle engines coolant. The Nano-particles are introduced to a conventional coolant in certain concentrations resulted in, enhancing the ability to transfer heat, lowering the energy cost and the environmental impact. The performance enhancement caused reduction of the radiator and the vehicle frontal area that lowered the coefficient of drag consequently reduced the fuel consumption. Two types of Nano-particles; metal (Cu) and metal oxide (CuO) are used with different concentrations (1%, 2% and 4%) in conventional coolant as a base fluid. Cooling of vehicle engine using radiator operated with different working fluids as water, coolant and modified coolant with Nano-particles are investigated. The conventional coolant with Nano Cu 2% had lowest exit temperature from the radiator and highest amount of heat rejection, so it can be used as industrial Nano-coolant.