Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
EXPERIMENTAL ANALISYS ON THE THERMAL PERFORMANCE OF MWCNT/WATER NANOFLUIDS IN A CAR RADIATOR
Submission Author:
Edwin Martin Cardenas Contreras , MG
Co-Authors:
Edwin Martin Cardenas Contreras, Guilherme Oliveira, ENIO PEDONE BANDARRA FILHO
Presenter: Edwin Martin Cardenas Contreras
doi://10.26678/ABCM.COBEM2017.COB17-0348
Abstract
This paper presents the results of experimental research on heat transfer and thermal performance characteristics of multi-walled carbon nanotubes (MWCNTs) in distilled water for their application in the automotive cooling system. The two-step method through high-pressure homogenization has been used to disperse the nanoparticles in distilled water. The influence of operating parameters such as mass concentration ranging from 0.05 to 0.16 wt%, nanofluid inlet temperature varying from 50 to 80 °C was evaluated experimentally. An experimental bench composed of a wind tunnel, which simulates the air flow through an automotive heat exchanger (radiator) and a hot fluid circuit which circulates the nanofluid inside the radiator was built to evaluate the thermal performance of nanofluids. The air flow rate was maintained constant at 0.175 kg/s and the mass flow rate of the hot fluid ranged from 30 to 70 kg/s. The drops in temperature and heat transfer rate of the heat exchanger have been investigated. There was a slight decrease in heat transfer rate, up to 5% for all test conditions. On the other hand, as the nanoparticle concentration increased, the heat transfer rate decreased.
Keywords
thermal conductivity, Nanofluid, Cooling system, Heat transfer
