Over the years, reducing the emission pollutants coming from transportation vehicles has been one of the main targets. As a counter, vehicle manufacturers have been spending a lot of time in research and development for electric vehicles (EV) and hybrid electric vehicles (HEV). With the increased number of electronics, auxiliary components, design complexity and weight increase introduced to vehicles, the thermal management system (TMS) can be of great positive influence. The management system can target improvements in fuel economy, range, comfort, and safety. Its function consists of maintaining and controlling temperatures, pressures, and load ranges of the system. The focus of this thesis is to design three distinct cooling loops.