IMPROVING THE HEAT REMOVAL RATE OF AN IC ENGINE USING NANO PARTICLE MIXED COOLANT
ABSTRACT:
Performance of an engine is greatly dependent on the cooling system of the engine. Addition of nanoparticle to coolant changes the physical and chemical properties of coolant. Hence latent heat and thermal conductivity is improved. Quantity of coolant required of heat removal rate is hence decreased. Improving the thermal efficiency of the engine leads to decrease in concentration of emissions in the exhaust. Nanoparticles improve the cooling rate when they are used along with coolant oil as base fluid in cooling systems. The rising demand for powerful and efficient engines call for the use of a coolant with better heat transfer characteristics.
KEYWORDS: Nanofluids, Automobile radiator, Heat transfer Enhancement, Thermal conductivity.
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It is a closed loop circuit consisting of manometer, flow meter, valves, pump, vibrator heater, reservoir, thermocouple and radiator. The manometer is used to gauge the pressure at the inlet and outlet of the radiator. 30% of the reservoir is filled with the base fluid. The total volume of the base fluid in the entire system is kept constant. The thermocouples used in the experimental setup are T type thermocouples. The radiators wall temperature is measured using these thermocouples. Flow meter is also included in the setup to measure and control the motion. Here a vibrator heater is used to replicate the heat emission of any automotive engine. A DC power supply is used to run the fan instead of a car battery. The pH values in reference to the nano fluid stability and change in thermal properties, have been checked, before and after the experiment. So to augment heat transfer for many applications low values of nano fluid pH is needed. Hence a single point calibration technique is used to calibrate the pH