Heat Removal Analysis Using NTU Microscopic Theory And Experimental Fluid Testing Of Radaitors, Pumps And Fans For The Thermal Management System Of Formula SAE Electric Racecar
Bulsara, Shahzad Shakruki
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Formula SAE at UT Arlington has always been building well engineered race cars, further being one of the top teams in The United States. However, an electric race car being first in the fleet, cooling of electric motors played a vital role. The thermal system being significantly different from combustion cars, consists of a lower heat application. It is always favorable to maintain electronics as close to ambient temperature as compared to its counter hydro-mechanical engines. To attain the objective, a complete thermal & fluid analysis was carried out using the NTU method/ microscopic theory and experimental results associated towards achieving system resistances/ pressure drop relations using frictional factors for the appropriate size of a dual pass radiator, water booster pumps and high profile fans. Further, with system and pump/ fan curves, I received forecasted and actual operating points which in turn enables the team to have a better judgement and analytic towards the selection of the same.