Heat Transfer Enhancement by Using Nano-Fluid

Mechanical Engineering

In this paper the experimental analysis of the thermal behaviour of the single phase flows through an automobile radiator. In advance technological development in automotive industries has increased the demand for high efficiency engines. A high efficiency engine is not only based on its performance but also for better fuel economy and less emission. One of the important elements in car cooling system is the radiator. Radiator plays an important role in heat exchange. In this paper the experimental analysis of the thermal behaviour of the single phase flows through an automobile radiator. Heat transfer enhancement studies can help in the design of lighter and more compact radiators for the same given load, which in turn can improve the fuel economy of the automobile. The thermal performance of a radiator operated with Nano fluids is compared with a radiator using conventional coolant. In this study, effect of adding Al2O3 nanoparticle as a base fluid in radiator will be investigated experimentally. Forced convective heat transfer of water and ethylene glycol based Nano fluid will be compared experimentally with water, water + ethylene glycol (60:40), water+ethylene glycol+ nanoparticles have been carried out. The experimental results show that Al2O3 based coolant show better heat transfer as compared to other coolants. Nano fluids have the capacity to transfer heat more efficiently than conventional coolant like water. Due to high thermal conductivity, MWCNT is a better coolant amongst CuO and water.

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