A hybrid immersion cooling apparatus and method is provided for cooling of
electronic components housed in a computing environment. The components
are divided into primary and secondary heat generating components and are
housed in a liquid sealed enclosure. The primary heat generating
components are cooled by indirect liquid cooling provided by at least one
cold plate having fins. The cold plate is coupled to a first coolant
conduit that circulates a first coolant in the enclosure and supplies the
cold plate. Immersion cooling is provided for secondary heat generating
components through a second coolant that will be disposed inside the
enclosure such as to partially submerge the cold plate and the first
coolant conduit as well as the heat generating components.