Experimental investigation of air jet impingement cooling in car radiator with hollow cone nozzle plate spacing using nanofluids

Water is an emerging heat transfer fluid with great promise for thermal engineering because of its heat transfer coefficients. However, much more must be done with the fluid that transmits heat to make the system more effective in handling heat. Nanoparticle cooling fluid speeds up the movement of heat through the car radiator and makes it possible to make it smaller altogether. In the present study, to examine heat transfer characteristics of nanofluids of Deionized (DI) water and Ethylene glycol (60:40). Four different concentrations of nanofluids were prepared by mixing 0.05 to 0.3 Vol. % of nanofluids with a mixture of DI water and Ethylene glycol (EG). The studies were carried out by varying coolant from 3 to 15 LPM while keeping the airspeed at a mean of 5 m/s. The airflow velocity towards the radiator is continually maintained at a median of 5 m/s. The k-type thermocouple monitors the cooling outlet’s temperature and a comparative study of the thermal conductivity of experimental results with machine learning. The results show that the DI water had a lower thermal conductivity of 0.891 W/m K than the EG nanofluid, which had a thermal conductivity of 0.946 W/m K. The EG nanofluid showed a more significant heat transfer coefficient of 36384.41 W/m² K than the DI water. The viscosity of the nanofluid increases as the concentration of nanofluid in the DI water increases and decreases as the temperature rises.