Patent ID: 7395787

Claim:
An improved low flow rate coolant system comprising: a heat exchanger; at least one electric pump; at least one component to be cooled; a coolant reservoir; piping interconnecting the heat exchanger, the at least one electric pump, the coolant reservoir, and the at least one heat generating component; and a liquid coolant pumped by the at least one electric pump so as to flow, via the piping through the heat exchanger and remove heat from the at least one heat generating components, wherein said piping has an average piping cross-sectional area per unit length; and an air separator connected to said piping, said air separator comprising: a canister having a canister cross-sectional area per unit length, said canister comprising: at least one coolant inlet connected to said at least one heat generating component via said piping; a pump outlet connected to an inlet of said at least one electric pump via said piping; and a coolant reservoir outlet connected to said coolant reservoir via said piping; wherein said coolant reservoir is located gravitationally higher than said canister, and wherein said canister cross-sectional area per unit length is larger by a predetermined amount than said average piping cross-sectional area per unit length such that coolant in said canister has a dwell time thereinside which allows air bubbles in said coolant to migrate toward said coolant reservoir outlet and thereupon continue to migrate to said coolant reservoir.