Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
ANALYSIS OF RADIATORS IN VEHICLES COOLING SYSTEM OF SAE FORMULA
Submission Author:
João Batista Campos Silva , SP , Brazil
Co-Authors:
João Zago, João Batista Campos Silva, Miguel Ângelo Menezes
Presenter: João Zago
doi://10.26678/ABCM.ENCIT2018.CIT18-0769
Abstract
In order to ensure the safety of the pilots and oblige team members to develop different designs every year, the use of pure distilled water as a coolant, rather than a mixture of water, is mandatory in the cooling system of a SAE vehicle. With ethylene glycol, as is used in commercial vehicles. This change in the fluid circulating inside the engine for cooling makes it unfeasible to use much of the engine manufacturer's data to select a competitive cooling system. Therefore, in this work we did experimental data analysis in a cooling system in questions of heat extraction (cooling system used by the team Fenix Racing in 3 competitions of Formula SAE) in order to determine how much heat this cooling system can cool the engine (CB600F 4-cylinder, used by this team) in each rotation range with the use of distilled water as cooling fluid. The tests were done with the car stopped, situation of lower efficiency of the cooling system. The cooling system was installed and an internal thermocouple and anemometer were placed in the system in order to collect the data of temperature and airflow. The thermocouple and anemometer were placed in the air outlet of the radiator. The engine was turned on for two minutes at each rotation, starting at 1000 rpm up to 11000 rpm by varying the engine speed by four more intermediate rotations and the temperature and air velocity data at each rotation were all collected every 10 seconds. The cooling system showed an increase in the heat extraction with the increase of the motor rotation, as expected, having its maximum heat extraction value in the maximum rotation of the test, with a maximum extraction of 75 Kw, value equal to the maximum power of the motor.
Keywords
Cooling system, Radiator, Heat exchanger
