The present disclosure is directed to a direct liquid cooling system for cooling of electronic components and configured to maintain a predetermined thermostable environment for the electronic components. The system includes a reservoir and a rack removably placed in the reservoir and securely containing electronic components to be cooled. The system also includes a dielectric coolant which is configured to flow upward in parallel streams between the electronic components and a pump that facilitates continuous pumping of the dielectric coolant thereby forcing the dielectric coolant upwards through the electronic components and overflowing the dielectric coolant within the reservoir. A heat exchanger is also provided and coupled with the reservoir via an outlet pipeline. Additionally, a controller is provided to monitor the temperature of the dielectric coolant and adjust the flow of the coolant.