Described herein are devices, systems and methods for utilizing fluid cooling to thermally manage electrically-powered devices. Embodiments incorporating features of the present disclosure can purge heated cooling fluid from the system immediately after if has been used to absorb heat from an electrically-powered device, so that other devices in the system do not receive cooling fluid from another device in the system. In some embodiments, cooling fluid can be made to directly impinge on or near an electrically-powered device.